Front Cover - Full Color

american society of biomechanics 2012th 36 Annual Meeting

August 15-18, 2012 Gainesville, fl Inside Front Cover - B & W

a special thank you to our 2012 sponsors: Body - B & W

Table of contents

hilton-UF Conference Center map 2 meeting schedule overview 3 Welcome 4 ASB executive board 5 asb committees 5 Meeting information at a glance 6 social program 7 Networking & Professional Development 8 tutorials 8

lab tours 9 b io m ech a nics of plenary & award sessions 10 symposia 12 research studies 12 Oral presentations (Thursday) 13 Oral presentations (friday) 16 Oral presentations (saturday) 19 poster session overview 25 poster session 1 26 2012 poster session 2 40 notes 54 exhibitor booth layout 56 a meric n society

University of Florida Campus Map 57 1 hilton gainesville | uf conference center - main level

restrooms pool fitness center

main outdoor dining 2-bits entrance 6 area lounge

albert’s buffet restaurant 8 elevators 7 kitchen administrative offices Laundry 9 gift front front shop desk office

public 8. Private dining room storage restrooms 9. business center 1 2 3 phones

dock registration desk loading C B parking

allroom prefunction century 1. Dogwood b patio 2. live oak A area 3. cypress prefunction 4. hawthorne 5. magnolia 6. florida room azalea

hickory 4 7. board room

break pavilion irch b 2 cedar 5 restrooms Meeting schedule overview wednesday thursday friday saturday August 15 August 16 August 17 August 18

10:30 - 12:30 7:00 - 8:00 7:00 - 8:00 7:00 - 8:00 Lab Tour 1 Breakfast (Open seating first floor); Breakfast (Open seating first floor); Breakfast (Open seating first floor); Past Presidents’ Breakfast (Albert’s Dining Women in Science Breakfast (Two Bits Lounge) 5K Fun Run through UF Campus 12:30 - 2:30 Room) 8:00 - 9:30 Tutorial I (Century A) 8:00 - 11:00 7:45 Poster Session 2 Oral Presentations 2:00 - 5:00 Opening Remarks (Century A) (Century A, Dogwood, Hickory, Azalea) • Clinical Gait (Century A) • Upper Extremity (Century B) ASB Executive Board Meeting 8:00 - 9:15 11:15 - 12:15 • Knee 1 (Century C) (Board Room) Oral Presentations Tribute to David Winter, Ph.D., P.Eng. • Seating Symposium - Thematic (Azalea) • Balance During Locomotion (Century A) 2:00 - 4:00 (Phillips Center for the Performing Arts) • Tissue Mechanics (Century B) 10:00 - 11:15 Lab Tour 2 • Bone (Century C) Oral Presentations 12:30 - 1:30 • Stroke - Thematic (Azalea) • Gait 2: Analysis (Century A) 2:40 - 3:10 Lunch (Open seating first floor) • Spine (Century B) Tutorial II (Century A) 9:45 - 11:00 1:30 - 3:15 • Knee 2: ACL (Century C) Oral Presentations • Muscle 2: Imaging - Thematic (Azalea) 3:20 - 4:20 • ASB Fellows Symposium (Century A) Oral Presentations Tutorial III (Century A) • Ergonomics (Century B) • Aging & Gait Symposium (Century A) 11:30 - 12:45 • Imaging: Knee (Century C) • Motor Control (Century B) (Phillips Center for Performing Arts) 4:30 - 5:30 • Obesity - Thematic (Azalea) • Muscle 1: Modeling & Behavior (Century C) Young Scientist Predoctoral Award - Jacob Elkins; Student Speakers (Century A) • Amputee Gait - Thematic (Azalea) Young Scientist Postdoctoral Award - Metin 11:30 - 12:45 Yavuz , Ph.D.; James J. Hay Memorial Award 5:45 - 7:45 Oral Presentations 3:45 - 5:15 Lecture - Jesus Dapena, Ph.D. Opening Reception • Gait 1: Methods (Century A) Oral Presentations (Florida Museum of Natural History) • Postural Control (Century B) • Teaching Symposium (Century A) 1:00 - 2:00 • Orthopedics (Century C) • Comparative (Century B) Lunch (Open seating first floor); • Journal Awards - Thematic (Azalea) • Sports (Century C) ASB Business Meeting - Open to All (Century A) • Computational Biomechanics (Azalea) 12:45 - 1:45 2:00 - 3:30 Lunch (Open seating first floor); 5:30 - 6:30 Oral Presentations Diversity Lunch (Florida Room) Borelli Award Lecture - Carlo Deluca, Ph.D. • Falls (Century A) (Phillips Center for the Performing Arts) • Computational Modeling (Century B) 2:00 - 3:00 • Running (Century C) Keynote Lecture - Susan Harkema, Ph.D. 6:30 - 7:30 • Powered Exoskeleton & Prosthetics - (Phillips Center for the Performing Arts) APTA Networking (Florida Room) Thematic (Azalea) 3:30 - 6:30 3:45 - 4:15 Poster Session 1 Closing Ceremony & Awards (Century A) (Century A, Dogwood, Hickory, Azalea) 4:30 - 6:00 7:00 - 10:00 ASB Executive Board Meeting - Closed Meeting Banquet & Induction of Fellows (Board Room) (J. Wayne Reitz Union Grand Ballroom) 3

meeting schedule overview 4 to Sincerely, activities. and of Furthermore, these efforts. Abstract like executive meeting The attendees. On addition, We Biomechanics. and and Meeting Co-Chair Public thank are behalf inaugural Becky the to ASB Chris Hass pleased enthusiastically world. experience. reviewers you, Health and board the We are pleasedtowelcome you stay. andwishyou awonderful of Allen, the meeting financial its research the by Of and ASB Annual and Institute the meeting the carefully the We Health continued executive will submitted studies support welcome representatives would Meeting feature of participants, evaluated Professions, Biomedical with for like board, growth you Meeting Co-Chair abstracts, are informative the conference Mark to to run submissions meeting thank the at welcome fellow biomechanists! of Gainesville, for UF Tillman the Imaging exclusively the University 169 making all University Center ASB tutorials attendees. has were of and and those been annual this for FL. selected by of many Bioengineering and Florida, of provided volunteers. Exercise who event These We meeting. Florida symposia, as are student have a opportunities presentations and worthwhile Science, excited by provided contributed In Each everyone the volunteers total, engaging at following for year, the Visit critical 536 the endeavor. National will (podium who the Gainesville, to keynote donated abstracts opportunity surely the institutions: tireless has guidance planning contributed Institutes and We make lectures, their were efforts UF are thematic and to for submitted time UF confident Center and host of assistance of an award College to many Health. implementation prior enlightening, posters) Head LocalOrganizing the the for presentations, to you planning 36 to make Mark Bishop Movement Committee in of this And th and and

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Kurt Beschorner Melissa Gross Mary Rodgers a rd | committees Sanghita Bhattacharya Chris Hass Elizabeth Russell President – Elect: Program Chair: Mark Bishop Daniel Herman Malisa Sarntinoranont John Challis Elizabeth Hsiao-Wecksler Timothy Brindle Walter Herzog Anne Schmitz Pennsylvania State University of Illinois at Timothy Burkhart Pilwon Hur Brian Schulz University Urbana-Champaign Tamara Bush Benjamin Infantolino Jason Scibek John H. Challis Hyun Gu Kang Jae Kun Shim Past-President: Program Chair-Elect: Rakie Cham Andy Karduna K. Alex Shorter Jill McNitt-Gray Rakie Cham April Chambers Ata Kiapour Rob Siston University of Southern University of Pittsburgh Young-Hui Chang Rodger Kram Kachun Siu California Steven Charles Laurel Kuxhaus Cecile Smeesters Ajit Chaudhari Zong-Ming Li Joe Sommer Li-Shan Chou Arash Mahboobin Elizabeth Stegemöller Treasurer: Meeting Co-Chair: Evangelos Christou Denise McGrath Martin L. Tanaka Gary Heise Chris Hass Bryan Conrad Jill McNitt-Gray Karen Troy University of Northern University of Florida Bradley Davidson Chris Miller Brian Umberger Colorado John De Witt Ross Miller Gangadhar Utturkar Paul DeVita Matthew Moran Srikant Vallabhajosula Angela DiDomenico Melissa Morrow Dwight Waddell Secretary: Meeting Co-Chair: Janet Dufek Erika Nelson-Wong Laura Wojcik Michael Madigan Mark Tillman Brent Edwards Rick Neptune Ting Xia Virginia Tech University of Florida Alejandro Espinoza Orias Joe Nocera Yawen Yu Sue Ferguson Justus Ortega Glenn Fleisig Pranav Parikh Education Committee Student Representative: Chair: Meghan Vidt ASB Program committee Gerald Smith Wake Forest University Kurt Beschorner; Rakie Cham; Glenn Fleisig; Mary Rodgers; Jae Kun Shim; Karen Utah State University Troy; Brian Umberger

Communications assistants to the meeting & program chairs Committee Chair: Special thanks to Morgan Boes, David Li, and Matt Petrucci. Special thanks also Zong-Ming Li to Allison Vitt, Rusty Haskell, Curtis Weldon, Andrew Campbell, Jennifer Norse, Cleveland Clinic Matt Denning and Iain Hunter for assistance with conference organization, program development and website construction and maintenance. 5 Meeting information at a glance meeting locations 7-12); Muscle (Posters 13-16); and Imaging (17-24) All of the academic meeting events (podium oral presentations, posters, mentoring Dogwood meeting room: Orthopedics (Posters 25-36) and Computational Modeling sessions, etc.) will be held at the Hilton University of Florida Conference Center. (Posters 37-50) The Plenary and Award sessions will be held in the University of Florida Center Ballroom A: Methods (Posters 51-64); Motor Control (Posters 65-79); Ergonomics for Performing Arts. The welcome reception will be at the University of Florida’s (Posters 80-90); Lower Extremity (Posters 91-102); Falls (Posters 103-113); Posture Museum of Natural History and banquet will be held in the Grand Ballroom of the & Balance (Posters 114-133); Clinical (Posters 134-156); Rehabilitation (Posters t a gl nce 157-168); and Wheelchair Biomechanics (Posters 169-172) J.Wayne Reitz Union. registration poster session 2: friday, from 8:00 - 11:00 aM

meeting a The registration desk is located in the lobby of the Hilton University of Florida Conference Center. The registration desk will be staffed on Wednesday from 12 pm (Posters must be mounted by 7:45 am and removed by 11:15 am.) to 6 pm, and Thursday and Friday from 7 am to 5 pm. Azalea meeting room: Thematic posters from Amputee Gait and Computational biomechanics exhibitor booths Hickory meeting room: Upper Extremity (Posters 203-220) Exhibitor booths will be located in the Prefunction Area and Hawthorne. See page 56. Dogwood meeting room: Comparative (Posters 173-175); Knee (Posters 176-192); and Spine (Posters 193-202) ASB executive board/exhibitor’s reception Ballroom A: Running (Posters 221-241); Sports (Posters 242-270); Instrumentation (Posters 271-276); Gait (Posters 277-313); Prosthetics and Orthotics (Posters Wednesday, August 15, 2012, 4:45-5:30 pm, Two Bits Lounge 314-332); Thematic Posters from Seating, Muscle Imaging and Powered Exoskeleton. Attendance limited to ASB Executive Board, Exhibitor Representatives and Organizers of the 2012 and 2013 Annual Meetings of the ASB. Podium presentations Presenters are allotted 10 minutes for the presentation and 5 minutes for discussion. general opening reception Speakers will not be allowed to use their own computers for podium presenta- Wednesday, August 15, 2012, 5:45 - 7:45 pm, Florida Natural History Museum tions. Speakers must upload their presentation to the conference computer in Attendance is open to all meeting delegates, staff and exhibitor representatives. See their presentation room during the break prior to their presentation session. Due Social Program for details. to space constraints, we will also stream all talks in Ballroom B to the Cypress meeting room and talks in Ballroom C to the Live Oak meeting room. poster presentations At least one named author is required to be present at each poster during its thematic poster presentations Posters must be mounted by 8:00 am and removed by: 6:45 pm (Thurs.), 5:30 designated poster session. Odd-numbered posters will be presented during the first pm (Fri.) and 4:00 pm (Sat.). Thematic Poster sessions have been added for 2012. 90 minutes of the session. Even-numbered posters will be presented during the The first 15 minutes of each session are dedicated to viewing the posters for the second 90 minutes of the session. Posters can be a maximum of 36” wide x 48” session. Each poster will have a 5 minute formal presentation and a 10 minute apta social tall (portrait format). Any posters not removed will be discarded. Posters will be discussion period. Thematic poster sessions are audience-centric, with the majority friday, august 17 mounted on free-standing poster boards or on walls with push pins, which will be of the session being devoted to stimulate scientific discussion on the theme topic. 6:30 - 7:30 pM provided. There will be two formal poster sessions: (Podium presentations are presenter-centric, the majority of time devoted to presen- florida room tation with only a few minutes for questions from the audience.) The discussion in a poster session 1: thematic poster session differs from a slide presentation in that it involves the entire thursday, from 3:30 - 6:30 pM audience. In fact, the ideal discussion is one in which the members of the audience (Posters must be mounted by 3:15 pm and removed by 6:45 pm.) engage in discussion with each other. Successful discussions should focus on the topic and not on the individual presentation or presenter. Participants should leave Azalea meeting room: Thematic posters from Stroke, Obesity and Journal Awards having both learned about the work presented, but also about how the work will be Hickory meeting room: Bone (Posters 1-5); Cell & Tissue Mechanics (Posters integrated into the field and what some next steps might be. 6 breakfast & Lunches speaker practice room meeting a Breakfast: Hot and cold breakfast options and fruit will be served daily beginning Birch meeting room at 7:00 am. Lunches: A choice of prepared lunches and salads will be provided daily, including a vegetarian option. internet access

Free wireless internet access is available throughout the conference hotel. You are t a gl nce & soci l progr m banquet strongly encouraged to check and download updated meeting proceedings and 7:00 – 10:00 pm, J. Wayne Reitz Union Grand Ballroom. The first bus will leave the abstracts from the ASB 2012 website prior to the presentation sessions. No electronic Hilton at 6:15 pm. The last bus will leave the Reitz Union at 10 pm. versions of the proceedings or abstracts (e.g. USB thumb drives or CDs) will be provided at the meeting.

social program

opening cocktail The opening cocktail reception will be held in the Florida Museum of Natural History (http://www.flmnh.ufl.edu/), which is located reception on the campus of UF and is a short walk (7 minutes) from the conference venue at the UF-Hilton. The museum features the Butterfly wednesday, august 15 Rainforest, a screened vivarium which houses subtropical and tropical plants and trees to support 55 to 65 different species and 5:45 - 7:45 pM hundreds of free-flying butterflies. Guests can stroll through the Butterfly Rainforest on a winding path and relax to the sounds of florida museum cascading waterfalls. of natural history

banquet The banquet will be held in the Grand Ballroom of the J. Wayne Reitz Union on the UF campus. Buses will be available for transporta- thursday, august 16 tion between the UF – Hilton and the Reitz Union. At the beginning of the banquet, the 2012 class of Fellows of the American Society 7:00 - 10:00 pM of Biomechanics will be inducted. Be sure to take advantage of your discount coupons for souvenirs at the Reitz Union Bookstore prior Reitz grand ballroom to entering the Annual Banquet!

student night An informal opportunity for students to mix and mingle with other ASB student members. Please plan to join us at Gator’s Dockside on the town (just west of the UF campus: 3842 Newberry Road, Suite 1-A; (352) 338-4445) to meet fellow ASB students and casually network friday, august 17 with one another. Students will be on their own for dinner and drinks this evening. You don’t want to miss the chance to kick back 6:30 pm and relax with your fellow students! gator’s dockside

The 2nd annual Networking Social of the American Physical Therapy Association (APTA) at the ASB annual meeting is an outreach apta social for the Physical Therapy profession at the conference that provides a casual environment for professionals to talk about the integration friday, august 17 6:30 - 7:30 pM of physical therapy in the biomechanics research setting, providing exposure for the profession and promotes collaborative research. florida room Rehabilitation therapists, collaborators and students welcome! Light fare and beverages will be provided. The event is sponsored by The MotionMonitor®. Contact Margaret Finley, PT, Ph.D. ([email protected]) if you have questions.

5K run through the swamp Meet in the Hilton lobby to join us in a 5K Fun Run around the UF campus. saturday, august 18 7:00 - 8:00 aM uf hilton lobby 7 networking & professional Tutorials development wednesday, august 15

student event meeting attendees. Due to room size 12:30 - 2:30 pm blinded fashion using gait data collected wednesday, august 15 constraints, reservations will be taken. century a from subjects implanted with a force- Remaining seats will be open on a measuring knee replacement. 4:30 - 5:30 pM Filtering of Biomechanical ballroom a first-come, first-served basis. Please The tutorial will cover the goals of the make plans to join us for this very Data competition, the accuracy of the blinded John H. Challis, Ph.D.; important conversation! The event will include tips and Pennsylvania State University contact force predictions generated thus pointers on how you can excel Contact ASB Student Repre- far, and plans for upcoming data distribu- sentative Meghan Vidt (mvidt@ as a student as you work toward This tutorial will review: frequency tions from these unique subjects. wakehealth.edu) to RSVP for this your career. Irene Davis, Ph.D., analysis, data acquisition, noise properties, event if not done when registering for Thomas Clanton, Ph.D., and Angela recursive and non-recursive filters, filter the conference. DiDomenico, Ph.D. will be leading types, splines, truncated Fourier series, 3:20 - 4:20 pm discussions about how to effectively data differentiation, selecting the degree century a network while at the meeting, give of filtering, and conclude with some a ls / tutori a l development profession Measuring 3D Skeletal pointers for writing a fellowship women in science biomechanics-specific examples. application that will stand out to Kinematics Using breakfast Radiographic Images reviewers, and share the ins and outs friday, august 17 of working in the industry. Scott A. Banks, PhD; 7:00 - 8:00 am 2:40 - 3:10 pm University of Florida This will be an informative session florida room century a Shang Mu, PhD; for students, so you don’t want to miss MAKO Surgical Corp it! Open to student members of ASB. The Women in Science Breakfast Overview of the Annual is a roundtable discussion between Grand Challenge The purpose of this tutorial will be to students and members of ASB. The Competition to Predict In introduce participants to the basic principles diversity informal atmosphere allows students Vivo Knee Loads of skeletal kinematic measurement from B.J. Fregly, Ph.D.; luncheon and professionals to network and radiographic images, and to show examples discuss the unique aspects of women University of Florida of how these techniques can be applied in a thursday, august 16 pursuing a career in a scientific field. variety of different research contexts. 12:45 - 1:45 pM This tutorial will provide an overview florida room This has been a very popular event Examples of single- and stereo- in the past, so reservations will be of an annual “Grand Challenge projection imaging will be covered, as required. Contact ASB Student Rep- Competition to Predict In Vivo Knee well as methods for performing measure- The diversity luncheon will feature resentative Meghan Vidt (mvidt@ Loads” being held each year at the ASME ments with natural bones, bones with a discussion led by members of the wakehealth.edu) to RSVP for this Summer Bioengineering Conference. implanted metallic markers, and with joint ASB Diversity Task Force. During the The goal of the competition is to discussion, we hope to identify ways event if not done when registering for replacement implants. the conference. encourage critical evaluation of mus- in which ASB can better reach those culoskeletal model estimates of contact of diverse backgrounds and further and muscle forces during movement. extend its reach to the academic Competing research teams predict in vivo community. medial and lateral knee contact forces in a The luncheon is open to all 8 lab tours wednesday, august 15

lab tour 1: 10:30 am - 12:30 pm l a b tours | wednesd lab tour 2: 2:00 - 4:00 pm applied neuromechanics laboratory The Applied Neuromechanics Laboratory focuses on interactions between musculoskeletal biomechanics and sensorimotor control of lower extremity function with particular emphasis on the coordination of locomotion and balance. This lab applies biomechanical and neurophysiologic principles to understand aging and disease processes (Autism Spectrum Disorders, Progressive Supranuclear Palsy, Parkinson’s disease, Essential tremor) to optimize behavioral and surgical interventions. a

biomechanics laboratory y The Center for Exercise Science Biomechanics Lab, founded in 1995, focuses on analyzing human movement, specializing on the lower extremities. The lab studies the motion of the hip, knee and ankle during activities of daily living and fast-paced movements for different populations. Ongoing projects include investigation of the health benefits of a lever-drive wheelchair and effects of whole-body vibration on balance control. neuromuscular physiology laboratory The Neuromuscular Physiology Lab has the broad research interest of the lab in neuromuscular mechanisms that mediate acute perturbations (arousal, fatigue, and sleep) and chronic influences (aging, disease, training, and learning) to motor performance in humans. Currently, research in the lab involves identifying neural activation strategies from the single motor unit to the whole muscle level. The clinical significance of this work relates to populations that have increased tremor and impaired accuracy, such as in older adults and Parkinsonian patients. biomechanics & motion analysis laboratory The Biomechanics & Motion Analysis Lab in the Orthopaedics and Sports Medicine Institute contains one of the largest 3D motion analysis laboratories in the southeast. The lab is focused on clinical research across the spectrum of musculoskeletal disease including low back pain and osteoarthritis. The lab also has a strong history of research in sports medicine with a number of ongoing studies addressing sports performance and injury prevention. human performance motion laboratory The Human Performance Motion Lab (HPML) represents a collaboration between the Brain Rehabilitation Research Center at the VA Medical Center, and the Department of Physical Therapy, University of Florida. Projects ongoing at the HPML use neurophysiological and biomechanical approaches to understand the neural control of movement, mechanisms of disordered motor control in neuropathological conditions, and the capacity for motor recovery in adults following central nervous system injury. laboratory for rehabilitation neuroscience The Laboratory for Rehabilitation Neuroscience (LRN) is focused on developing an understanding of how the human brain is impaired in movement disorders and stroke, and developing interventions that mitigate the corresponding behavioral deficits. There are more than 3,000 square feet of space for laboratory data collection and analysis. Data collection devices include: Vicon motion analysis, 256 channel Biosemi EEG, Delsys EMG, Medoc pain stimulation system, and manipulanda for measuring force and movement from upper and lower limb joints. There is a fiber optic sensor laboratory where MRI-compatible sensors are manufactured. There is dedicated computer space for a full complement of neuroimaging techniques including voxel based morphometry, functional MRI, resting state fMRI, iron imaging and diffusion imaging. 9 plenary sessions | Thursday & Friday 10 logical Surgery, University ofLouisville recently, about thespeaker Professor Susan J.Harkema, Ph.D. spinal cord injurywithintensive activity-based rehabilitation Functional recovery inindividualswithchronic incomplete Phillips centerf 2:00 -3:00pm keynote address thursday, august 16 repair 2009, Breakthrough Award. Kentucky the Her the after spinalcord injury. with the covery Dr. In Director SCI Rick research spinal 2007, of awarded Susan Network Hall Dr. the Hansen Spinal and cord of focuses damaged the Harkema J. of Owsley Research to Harkema, injury that Fame Cord National individuals Foundation on provides Injury spinal for at B. neural was at seven or theperf Frazier Achievement Frazier Ph.D., Spinal a cord Research co-recipient who plasticity standardized Difference national Rehabilitation Rehab and is Cord have the Center recovery of rehabilitation in made Institute Injury Rehabilitation spinal of Maker Research activity-based orming arts the at critical of networks the Association Reeve-Irvine Chair, and Award function. University in centers contributions is Quality Research Director Department and therapies and In nominated in plenary sessions recovery Popular of Research 2011, of the Louisville. of Director Life, for United the to she of individuals promoting of Mechanics NeuroRe- and Medal her function received Neuro- States. of She most into the in is had plishments accomplishments the Muybridge Medal from theInternational Society ofBiomechanics. Achievement Investigators additional memoriesofthe effects Dr. development ofbiomechanicsasafieldstudy. Wong, Ph.D., Regis University. chanics scientific tion University four biophysics, Dr. Ph.D., Regis University at (June 16,1930–February 6,2012) Memorial T Phillips centerf 11:15 am-12:15pm keynote address friday, august 17 Philip Presenters: about Dr.winter Philip Organizers: author, the The Among Dr. on of highly Winter University most, normal E. purpose scholars teacher Martin, publications Martin, his and of significant if Award Award ribute to Prof. DavidW had Calgary. not and Winter mademanylastingcontributionstoourfield.He authored many impact. and and of in of a Ph.D., all, pathological this long biomechanics Waterloo Ph.D., educators; from from mentor. to distinctions, of textbooks our Audience tribute John and us. or theperf the the Iowa research Iowa Presenters impactful from Yack, Gait Trained Canadian and session gait, on and members State State awards, was and 1974 the Ph.D., literature; posture, Winter hadontheircareers andourfield. highlight academic will in an measurement, is Clinical University, Society University. through electrical internationally to orming arts inter, Ph.D provide and will University and celebrate trained the also career Movement honors, for balance; 2012, four large engineering, have Biomechanics, and a assessment, Walter in Dr. perspectives new of ., P impact as he biomechanics, recognized an Erika contributed Iowa. an .Eng Winter’s Analysis generation opportunity received engineer, Herzog, that physiology, Nelson-Wong, Erika and of the leader his Society, tremendous the his interpreta- numerous of primarily work scientist, Nelson- Lifetime to Ph.D., accom- biome- Career in share and and has the plenary & award sessions plen a ry & a friday, august 17 saturday, august 18 borelli award lecture young scientist pre-doc award

5:30 - 6:30 pm | Phillips center for performing arts 11:30 - 11:45 am | Phillips center for performing arts w a rd sessions | F rid

Neural Control of Force: A Biomechanics Perspective Jacob Elkins, University of Iowa: Carlo De Luca, Ph.D. Expedited Computational Analysis of Fracture of Ceramic THA Liners: Obesity NeuroMuscular Research Center, Boston University and Stripe Wear Considerations about the speaker young scientist post-doc award Carlo J. De Luca is a Biomedical Engineer who received his doctorate degree in 11:45 am - 12:00 pm | Phillips center for performing arts a 1972 from Queen’s University in Canada, where he began his academic career. He was y & Sa appointed to the faculties of MIT and Harvard Medical School simultaneously from metin yavuz, ph.d. Ohio College of Podiatric Medicine:

1974 to 1984. He then joined Boston University, where he currently holds the titles Plantar Shear Stress and its Clinical Implications trud of: Professor of Biomedical Engineering, founding Director of the NeuroMuscular

james j. hay memorial award lecture a

Research Center, Research Professor of Neurology, and Professor of Electrical and y Computer Engineering. He served as Dean ad interim of the College of Engineering 12:00 - 12:45 pm | Phillips center for performing arts from 1986 to 1989. Dr. De Luca has taught students in engineering and medical schools. He has Approaches to Research in Sports Biomechanics trained 41 M.S. and Ph.D. students, in addition to 40 scientists from 14 countries. Jesus Dapena, Ph.D. He is recognized for introducing engineering principles and concepts to the field Professor, Director of the Biomechanics Laboratory, Indiana University of Electromyography; for introducing EMG signal decomposition technologies; for studies on the control of motor neurons during voluntary contractions; for assessment about the speaker of muscle fatigue via the surface EMG signal; and for co-introducing the concept of Dr. Jesus Dapena received a Licenciado degree in biological sciences from the open-loop /closed-loop control for posture. Universidad Complutense, Madrid in 1973, and a Ph.D. in biomechanics from His body of work includes: a book, Muscles Alive, 111 peer-reviewed articles, 20 the University of Iowa in 1979. From 1979 to 1982 he held an assistant professor position in the Department of Exercise Science at the University of Massachusetts, book chapters, 17 peer-reviewed conference papers, and 15 patents. His writings have and since 1982 he has held associate and full professor positions in the Department of been cited over 12,000 times. He founded Delsys Inc., and continues to serve as its Kinesiology at Indiana University. He specializes in sports biomechanics. His research President and CEO. He is the founder and president of the Neuromuscular Research has focused on a variety of activities, including high jumping, discus throwing, hammer Foundation, established to recognize researchers in the field of Electromyography, throwing, hurdling, flail-like motions, tennis serving and field hockey, among others. and in the field of Biomechanics with emphasis on Motor Control. In addition, Dr. Dapena has worked on the development of various tools for the He is a Founding Fellow of two Bioengineering societies (AIMBES and BMES), analysis of human motion, including the calculation of angular momentum, computer and a Life Fellow of the IEEE BMES. He served a term on the National Advisory simulation, and 3D movie/video analysis techniques. Between 1982 and 2007, Dr. Council for Biomedical Imaging and Bioengineering of NIH. Throughout his career Dapena was the scientist in charge of the biomechanical analysis of the high jump he has received awards from scientific and philanthropic societies. event for USA Track & Field, where he analyzed the techniques of the top American high jumpers and gave them advice for technique changes. 11 symposia & research studies 12 papers their on cations diverse with Washington; Kenton thursday, august 16 Paul University; the Advanced Sponsored by: UFInstitute onAging University ofColorado Boulder Organized by: JasonFranz andRoger Kram, 1:30 -3:15pm|BallroomA aging andgaitsymposium friday, august 17 Featured The Southern California Organized by: JillMcNitt-Gray, University of 9:45 -11:00am|BallroomA A Featured and University of findings changes pendence together tribution tion, continues on

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in of oral presentations | Thursday, August 16, 8:00 - 9:15 am or a l present Century A Century B Century C Azalea Balance During Overflow Cypress Overflow Live Oak Thematic PosTers Locomotion tissue mechanics Bone Stroke Session Chairs: John Dingwell, Session Chairs: Kyle Allen, Thomas Session Chairs: Brent Edwards, Session Chairs: Margaret Finley,

Rick Neptune a Angelini Timothy Burkhart Carolyn Patten tions | thursd Reduced Light Intensity Alters A ComputationalM odel to Estimate 8:00 Repeatability of Image Registration SpatiotemporalG ait PatternsD uring Pre-Stress Between Brain Tissue and SegmentationP rocedures for CT am Treadmill Walking and a Needle Used for Convection Scans of the Human Distal Radius Poster Viewing Huang C, Chien J, Mukherjee M, Siu K Enhanced Delivery Bhatia V, Edwards W, Troy K Nebraska Biomechanics Core Facility; Casanova F, Carney P, Sarntinoranont M

University of Illinois at Chicago a University of Nebraska Medical Center University of Florida y

Scapulohumeral Kinematics in 8:15 ActiveC ontrol of Lateral Balance Correlations Between Temporo- PredictingD istal Radius Bone Individuals with Upper Extremity Varies Throughout a Step During mandibular Disc Damage and Strains and Injury in Response to am Impairment from Stroke Treadmill Walking Bulk Shear Mechanics Impacts to Failure Using Multi-Axial Accelerometers. Finley M, Combs S Sawers A, Hahn M Juran C, McFetridge P Burkhart T, Dunning C, Andrews D Krannert School of Physical Therapy University of Washington University of Florida Western University University of Indianapolis Gait Training with Visual and 8:30 Whole-Body Angular Momentum A Novel High-Order Element for Tracking High-Speed Patella Motion Using Biplanar Videoradiography: ProprioceptiveF eedback Improves am During Stair Ascent and Descent the Analysis of Heart Valve Leaflet Overground Propulsive Forces in An Accuracy Study Silverman A, Neptune R, Sinitski E, Tissue Mechanics People Post-Stroke Rainbow M, Cheung R, Miranda D, Wilken J Mohammadi H, Herzog W Wutzke C, Michael L Schwartz J, Crisco J, Davis I, Fleming B Colorado School of Mines University of Calgary University of North Carolina at Harvard Medical School Chapel Hill 8:45 Balance Recovery KinematicsA fter Comparison of Module Quality and Age-Related Changes in Dynamic a Lateral Perturbation in Patients Storage and Loss Moduli of Bone in Walking Performance of Hemiparetic am Compressive Properties of Soft with Transfemoral Amputations Osteogenesis Imperfecta Subjects Pre and Post Locomotor Tissues Over the Hip Region Werner K, Linberg A, Wolf E Albert C, Jameson J, Toth J, Smith P, RehabilitationT herapy Measured by Forced Vibration Routson R, Clark D, Bowden M, Kautz S, Department of Orthopedics and Harris G Choi W, Robinovitch S Neptune R Rehabilitation, Walter Reed National Marquette University Simon Fraser University Department of Mechanical Engineering, Military Medical Center The University of Texas at Austin

DistinctP atterns ofR ecovery 9:00 Dynamic Stability of Individuals with Influence ofS caling Assumptions Metaphyseal and Diaphyseal Following TherapeuticI ntervention and Without Unilateral Trans-Tibial Bone Loss Following Transient am on Tendon StiffnessE stimation Post-Stroke: Responders vs. Non- AmputationsW alking in Destabilizing Muscle Paralysis Are Distinct Walker E, Sandercock T, Perreault E Responders Environments Osteoclastogenic Events Northwestern University Patil S, Patten C Faust K, Terry K, Dingwell J, Wilken J Ausk B, Gross T University of Florida Brooke Army Medical Center University of Washington 13 oral presentations | Thursday, August 16, 9:45 - 11:00 am y a Century A Century B Century C Azalea ASB fellows Overflow Cypress Overflow Live Oak Thematic PosTers symposium ergonomics imaging-knee obesity Session Chair: John Challis Session Chairs: Angela DiDominico, Session Chairs: Zachary Domire, Session Chairs: Paul DeVita; Ray Bradley Davidson Ryan Breighner Browning tions | thursd a 9:45 Measuring 3D Tibiofemoral Can Muscle Atrophy Enable Bone Use of Marker-Less MotionC apture Kinematics and Contact Using am Hypertrophy? Approach for ConstructionF ield Dynamic Volumetric Magnetic Workers’ Biomechanical Analysis Gross T Resonance Imaging Poster Viewing Li C, Lee S, Armstrong T Kaiser J, Bradford R, Johnson K, University of Washington University of Michigan Wieben O, Thelen D

or a l present University of Wisconsin 10:00 What Causes Slips, Trips, and Falls 3D-To-2D Registration for the EOS am Why Feelings Matter:E motions and on the Fireground? A Survey Biplanar Radiographic Imaging The Issue of Tissue: A Comparison of Biomechanics in Health and Illness Petrucci M, Harton B, Rosengren K, System KinematicM odels in Obese Adults Gross M Horn G, Hsiao-Wecksler E Kern A, Kang L, Baer T, Segal N, Board W, Haight D, Browning R University of Michigan University of Illinois at Urbana- Anderson D Colorado State University Champaign University of Iowa 10:15 Lateral Heel Wedge Affects the Determining Stabilization Time Changes in Gait Over a 30 Minute Use of Assistive Technology to Tibiofemoral Kinematics inK nee Walking Session in Obese Individuals am Using a Negative Exponential Improve Mobility OA Patients:A Preliminary Weight Do Biomechanical Loads Increase in Mathematical Model Bearing MRI Study Kaufman K Pursuit of Weight Loss? DiDomenico A, McGorry R, Banks J Wei F, Allen J, Gade V, Stolfi C, Cole J, Mayo Clinic Singh B, Janz K, Yack H Liberty Mutual Barrance P University of Iowa Kessler Foundation Research Center 10:30 A Biomechanical Comparison of Effect of ACL Reconstruction on Impact of Obesity on the Function am Remote Monitoring of Human Three Backpack Frames During Tibiofemoral Cartilage Contact of Hip Knee and Ankle During Movement Treadmill Walking. During Downhill Running. Transition BetweenL evel and Stair Cavanagh P Higginson B, Mills K, Pribanic K, Walking Thorhauer E, Anderst B, Tashman S University of Washington Hollins J, Heil D Umezaki K, Ramsey D University of Pittsburgh Gonzaga University University at Buffalo

10:45 VerticalT rajectory of Center of Mass The Influence of Concentric vs. Obesity ModifiesC anine Gait am is Maintained with Increased Vertical Eccentric Muscle Control on 3D Panel Discussion Stiffness whileC arrying Load and Dynamic Patellofemoral Brady R, Sidiropoulos A, Bennett H, Caron R, Wagenaar R, Lewis C, Contact Kinematics Rider P, Domire Z, DeVita P Saltzman E, Holt K Borotikar B, Siddiqui A, Sheehan F East Carolina University Boston University, College of Health National Institutes of Health, 14 and Rehabilitation Sciences: Sargent Bethesda, MD, USA oral presentations | Thursday, August 16, 11:30 am - 12:45 pm or a l present Century A Century B Century C Azalea Gait 1: Methods Overflow Cypress Overflow Live Oak Thematic PosTers Session Chairs: Jinger Gottschal, postural control orthopedics journal awards Greg Sawiki Session Chairs: Hyun Gu Kang, Session Chairs: Robert Siston, Steve Session Chair: Don Anderson a

Kimberly Bigelow Piazza tions | thursd

11:30 Scratch-Based Damage Quanti- Simple PredictiveM odels Reveal Movement Strategy and Arm Use Redistribute Sit-To-Stand Joint fication and Wear Prediction in am Step-To-Step Control of Walking Total Hip Arthroplasty Moments Poster Viewing Dingwell J, Bohnsack N, Cusumano J Kruger K, Tikekar N, Heiner A, Baer Gillette J, Stevermer C, Hall M University of Texas at Austin T, Lannutti J, Brown T

Iowa State University a

University of Iowa y

11:45 Are External Knee Load and EMG Coherence Analysis Reveals Altered Do Skeletal Muscle Properties am Measures Strong Indicators of Internal Postural Control During Standing in A PLLA Fabric System for Prevention Recover Following Repeat Knee Contact Forces During Gait? Persons with MultipleS clerosis of Hip Dislocation Botulinum Toxin Type-A Injections? Meyer A, D’Lima D, Banks S, Lloyd D, Huisinga J, Mancini M, Veys C, Andersen L, M. Genin G, Brondsted P Fortuna R, Horisberger M, Vaz M, Besier T, Colwell C, Fregly B Horak F DTU wind energy Herzog W University of Florida University of Kansas Medical Center University of Calgary

12:00 A Novel Methodology Using Principal Comparison of Unicompartmental Plantar Shear Stress Distributions in Postural Sway Correlates of Knee Arthroplasty and Healthy DiabeticP atients with andW ithout pm Component Analysis to QuantifyG lobal Perceived Comfort in PointingT asks Bilateral Asymmetry of Human Gait Limb for Knee Moments Generated Neuropathy Solnik S, Coelho C, Pazin N, Latash During Stair Ascent Yavuz M, Franklin A, McGaha R, Hoerzer S, Maurer C, Federolf P. M, Rosenbaum D, Zatsiorsky V Fu Y, Kinesy T, Mahoney O, Brown C, Prakash V, Rispoli J, Stuto J, Torrence Human Performance Laboratory - Pennsylvania State University Simpson K G, Lowell D, Canales M University of Calgary University of Georgia Ohio College of Podiatric Medicine 12:15 A New Approach to Understand Discriminating BetweenK nee Osteo- Postural Instability in Young Compressive Loading of the Distal pm Dynamic Cadaveric Robotic Gait arthritisS everity Levels in Walking Children with AutismS pectrum Radius Improves Bone Structure in Simulation of Pes Planus Using Only Force PlatformD ata Disorders Young Women Whittaker E, Roush G, Ledoux W Miller R, Brandon S, Deluzio K Lee H, Amano S, Fournier K, Troy K, Bhatia V, Edwards W VA Puget Sound Queen’s University Radonovich K, Hass C University of Illinois at Chicago University of Florida

GraftM aterial PropertiesA ffectS upra- 12:30 Determining the InertialP roperties Flexible Framework for Testing SimulationP redictions ofP rosthetic spinatus Force-GeneratingC apacity in of Running-SpecificP rostheses Postural Control Models: Evidence Foot and Muscle Function in pm a Simulated Rotator CuffR epair Response to Altered Foot Stiffness Baum B, Schultz M, Tian A, Hobara H, for IntermittentC ontrol? Santago A, Weinschenk R, Mannava S, During Below-Knee Amputee Gait Kwon H, Shim J Kang H, Murdock G Saul K Fey N, Klute G, Neptune R University of Maryland, College Park California State Polytechnic University, Virginia Tech - Wake Forest School for The University of Texas at Austin Pomona Biomedical Engineering and Sciences 15 oral presentations | friday, August 17, 1:30 - 3:15 pm

y Century A Century B Century C Azalea a Overflow Cypress Overflow Live Oak Thematic PosTers aging and gait motor control Muscle 1: modeling & amputee gait symposium behavior Session Chair: Jason Franz, Roger Session Chairs: Evangelos Christou, Session Chairs: Brian Umberger, Session Chairs: Jae Kun Shim, Kram Mike Pavol Jonas Rubenson Erik Wolf tions | frid a 1:30 How Do Lower Limb Muscles The Determinants of Walking Motor Learning is Enhanced in Older Adults Following Training Scale Across Individuals? Pm Enegetics in Elderly Adults with a Less Difficult Task Handsfield G, Sauer L, Hart J, Abel M, Ortega J Poster Viewing Onushko T, Kim C, Christou E Meyer C, Blemker S Humboldt State University University of Florida University of Virginia Dept. of or a l present Biomedical Engineering 1:45 QuantifyingI ncreased Skill Using pm Exercise Efficiency andM itochondrial A General Approach to Muscle Decreased Gait TransitionS peeds in Coupling in the Elderly Measured Bicycle KinematicsA s Wrapping Over MultipleS urfaces Unilateral, TranstibialA mputee Gait Conley K, Jubrias S Riders Learn to Ride Bicycles Stavness I, Sherman M, Delp S Norman T, Chang Y Cain S, Ulrich D, Perkins N Univ. of Washington Stanford University Georgia Institute of Technology University of Michigan

2:00 Modeling Intra-Trial Variability of a Both Limbs in Unilateral Transtibial ModulatingS tride Length & Walking Parameterizing and Validating a Amputees Display Increased Risk pm Redundant Planar Reaching Task Velocity by Young & Old Adults Three Compartment Muscle Fatigue for Tripping DeVita P, Rider P, Sidiropoulos A, Nguyen H, Cusumano J, Dingwell J Model for Isometric Tasks Wurdeman S, Yentes J, Myers S, Looft J, Frey Law L Copple T, Domire Z, Hortobagyi T University of Texas Austin, Dept. of Jacobsen A, Stergiou N East Carolina University Mechanical Engineering The University of Iowa Nebraska Biomechanics Core Facility

2:15 Comparison of Kinematic,K inetic, How Does Age AffectI ndividual Near-Infrared Light Therapy Delays and Mechanical Work Data Between pm Leg Mechanics During Uphill and Biomechanics Constrains Variability in Traditional and Bone BridgeA mputation SpatialS tructure of Muscle Coordi- the Onset of Skeletal Muscle Fatigue Downhill Walking? How Does Age Larkin K, Christou E, Baweja H, Techniques During Fast Walking One nation forE ndpoint Force Generation Year Post AmbulationW ithout an AffectI ndividual Leg Mechanics Moore M, Tillman M, George S, Sohn M, McKay J, Ting L AssistiveD evice During Uphill and Downhill Walking? Borsa P Franz J, Kehler A, MacDonald L, Kram R Georgia Institute of Technology Kingsbury T, Thesing N, Collins J, University of Florida Carney J, Wyatt M University of Colorado Boulder Naval Medical Center, San Diego, CA

2:30 Reduced Hip Extension Range of CorticalA ctivationsD uring a Joystick Immediate Application ofC yclic Upper Body Kinematics of Bilateral Motion andP lantar Flexion Strength Pursuit Task with Modulated Spindle Compressive Loading Attenuates TranstibialP rosthesis Users During pm Gait Are Functionally Significant Impairments Afferents Secondary Hypoxic Injury Folowing That AffectG ait in Older Adults Damaging Eccentric Exercise Major M, Stine R, Hodgson M, Gard S Soltys J, Wilson S Anderson D, Madigan M Haas C, Abshire S, Butterfield T, Best T Northwestern University Prosthetics- The University of Missouri Kansas City 16 Beth Israel Deaconess Medical Center Park The Ohio State University Orthotics Center oral presentations | Continued from page 16

Century A Century B Century C Azalea or a l present aging and gait Overflow Cypress Overflow Live Oak Thematic PosTers symposium motor control Muscle 1: modeling & amputee gait behavior Session Chair: Jason Franz, Roger Session Chairs: Evangelos Christou, Session Chairs: Brian Umberger, Session Chairs: Jae Kun Shim, Kram Mike Pavol Jonas Rubenson Erik Wolf a tions | frid Net Efficiency of theC ombined 2:45 Age-Related Differences in theM ain- Effect ofT actileP ertubation on Blindfolded Circular Path Navigation Force Enchancement: An Evolutionary Ankle-Foot System in Normal Gait: pm tenance of Frontal Plane Dynamic Strategy to Reduce the Metabolic Stability while Stepping to Targets Vallabhajosula S, Mukherjee M, Cost of Muscle Contraction? Insights for Passive and Active Hurt C, Grabiner M Stergiou N Joumaa V, Herzog W Prosthetics Nebraska Biomechanics Core Facility, Takahashi K, Stanhope S a Universtiy of Illinois at Chicago University of Calgary y University of Nebraska at Omaha University of Delaware

Association BetweenM otor Unit Ground Reaction Force and 3:00 VibrationI mpairs Proprioception Temporal-Spatial Adaptations to pm During Active Cyclical Ankle Recruitment and the Rates of Strain, Running Velocity When Wearing Panel Discussion Movements Force Rise and Relaxation Running-Specific Prostheses Lee S, de Boef-Miara M, Arnold A, Holmes T, Floyd L, Dean J Baum B, Tian A, Schultz M, Hobara H, Biewener A, Wakeling J Medical University of South Carolina Linberg A, Wolf E, Shim J Simon Fraser University University of Maryland, College Park

17 oral presentations | friday, August 17, 3:45 - 5:15 pm

y Century A Century B Century C Azalea a Overflow Cypress Overflow Live Oak Thematic PosTers teaching symposium comparative Sports computational Session Chairs: Cecile Smeester, Session Chairs: K. Alex Shorter, Session Chairs: Glen Fleiseg, Matt biomechanics Session Chairs: Erika Nelson-Wong Raziel Riemer Seeley Karen Troy, Silvia

tions | frid Blemker a 3:45 Influence of Lecture Slide Completeness on Student Learning Mesozoic Speed Demons: Flight The Relationship Between Leg pm in a Biomechanics Course Within Performance of Anurognathid Dominance and Knee Mechanics a Physical Therapy Curriculum Pterosaurs During the Cutting Maneuver Poster Viewing Nelson-Wong E, Eigsti H, Hammerich Habib M, Hall J Brown S, Dickin C, Wang H A, Marcisz N University of Southern California Ball State University or a l present Regis University

4:00 Suction andS kin: The Effect of Designing Biomechanics Courses The Influence ofP rophylacticA nkle Muscle Force EstimatesD uring the Vacuum Loading on the Skin of a pm for SignificantL earning: Fink Model Braces on Lower Limb Mechanics Weight-Acceptance Phase of Single- Common Dolphin Applied at Cal Poly Pomona During a 90° Side-Step CuttingT ask Leg Jump Landing Shorter K, Hurst T, Johnson M, Kang H Yang H, Boros R, Davies B Morgan K, Donnelly C, Reinbolt J Cramer S, Ketten D, Moore M California State Polytechnic University, Texas Tech University University of Tennessee Pomona University of Michigan 4:15 Neuromuscular Asymmetries and Problem- and Project-Based Learning Control of the Cat Paw Trajectory Deficiencies ofA ctiveA dolescent Peak and Nonuniform Fiber Stretch pm in Bioengineering: A Case Study During Walking on a Flat Surface Volleyball Players with Patello- Increase in the Biceps Femoris Long Smeesters C, Berube-Lauziere Y, Rancourt and Horizontal Ladder femoral Pain Head Muscle at Faster SprintingS peeds Klishko A, Farrell B, Beloozerova I, Fiorentino N, Chumanov E, Thelen D, Langelier E, Balg F, Fontaine R Di Stasi S, Myer G, Wertz J, Stammen Latash M, Prilutsky B K, Hewett T D, Blemker S Universite de Sherbrooke The Ohio State University, Sports University of Virginia Georgia Institute of Technology Health and Performance Institute 4:30 Muscle ActivationS trategy in the Lower Extremity Work is Associated Comparision of Patella Bone Stress A Tool for EvaluatingI ndividual pm Sand-Swimming SandfishL izard with Club Head Velocity During the Between Individuals with and Contribution inT eamwork (Scincus Scincus) Golf Swing in Experienced Golfers Without Patellofemoral Pain Doucet P Ho K, Powers C Sharpe S, Goldman D McNally M, Yontz N, Chaudhari A Universite de Sherbrooke University of Southern California Georgia Institute of Technology Ohio State University Wexner Medical Center Bilateral Analysis of the Shoulder 4:45 The Influence of Increased DOF in A Quadrupedal Postural Controller Internal Rotation Passive Torque- Intervention forI mproving Project the Knee Joint on Muscle Activation pm with Physiological Delays Reveals the Angle Relationship forE lite Pitchers Teams Timings and Forces in a Musculoskeletal Need for Multi-Level Stability with Glenohumeral Internal Doucet P Model Bunderson N Universite de Sherbrooke Rotation Deficit Roos P, Jonkers I, Button K, van Deursen R Georgia Institute of Technology Wight J, Grover G, Larkin K, Livingston Cardiff University B, Tillman M, 18 University of North Florida oral presentations | continued from page 18

Century A Century B Century C Azalea or a l present Overflow Cypress Overflow Live Oak Thematic PosTers teaching symposium comparative Sports computational Session Chairs: Cecile Smeester, Session Chairs: K. Alex Shorter, Session Chairs: Glen Fleiseg, Matt biomechanics Session Chairs: Erika Nelson-Wong Raziel Riemer Seeley Karen Troy, Silvia

Blemker a tions | frid 5:00 Batting Cage Performance of An AdaptiveT abu Search Optimi- Joint Kinematics in Chimpanzee Various Youth Baseball Bats zationA lgorithm for Generating pm and Human Bipedal Walking Crisco J, Rainbow M, Wilcox B, Forward Dynamics Simulations of Panel Discussion Lee L, O’Neill M, Demes B, LaBoda Schwartz J Human Movement M, Thompson N, Larson S, Stern J,

Department of Orthopaedics, Warren Vistamehr A, Neptune R a

Umberger B y Mechanical Engineering Department, University of Massachusetts Amherst Alpert Medical of Brown University and Rhode Island Hospital The University of Texas, Austin

oral presentations | saturday, August 18, 8:00 - 9:30 am

Century A Century B Century C Azalea or a l present clinical gait Overflow Cypress Overflow Live Oak Thematic PosTers Session Chair: Cara Lewis, Mary upper extremity knee 1 seating Rodgers Session Chairs: Steven Charles, Session Chairs: Li-Shan Chou, Ajit Session Chairs: Tamara Bush, Laurel Kaxhaus Chaudhari Stephen Sprigle a tions | Sa 8:00 Development of a Dementia-Specific Wrist RotationsA re Considerably Less Reliability of a Novel Proprioception Gait Profile:A pplication ofS ignal Testing Device am Smooth than Reaching Movements DetectionT heory Rojas J, Blackburn T, Dahners L, Poster Viewing Salmond L, Charles S

Karakostas T, Hsiang S, Davis B Olcott C, Weinhold P turd Brigham Young University Rehabilitation Institute of Chicago UNC Biomedical Engineering a y 8:15 PositiveA nkle Work is Affected by Motions of the Thumb Carpometacarpal (CMC) Joint am Peripheral Arterial Disease Evidence of Medial Maltracking in Bicycle Riding, Arterial Compression Yentes J, Wurdeman S, Pipinos I, Are Coupled During the Initiation and ErectileD ysfunction of Three Functional Tasks Patellofemoral Pain Johanning J, McGrath D, Myers S Behnam A, Boden B, Sheehan F Parthiban S, Yang C, Jones L, Baftiri A, Halilaj E, Rainbow M, Got C, Nebraska Biomechanics Core Facility National Institutes of Health Niederberger C Schwartz J, Ladd A, Weiss A, Moore University of Illinois at Chicago D, Crisco J Brown University, Providence, RI 19 oral presentations | continued from page 19 y a Century A Century B Century C Azalea clinical gait Overflow Cypress Overflow Live Oak Thematic PosTers turd Session Chair: Cara Lewis, Mary upper extremity knee 1 seating Rodgers Session Chairs: Steven Charles, Session Chairs: Li-Shan Chou, Ajit Session Chairs: Tamara Bush, Laurel Kaxhaus Chaudhari Stephen Sprigle tions | Sa a Sex Differences inU nconstrained 8:30 An IterativeL earning Controller for Transverse Plane KinematicR esponse Investigating theE tiology of Is the Problem Really Foot-Drop? an Elbow Simulator to Maintain Under Compression and Simulated am Vibration-Induced Low Back Pain Little V, McGuirk T, Patten C Flexion Angle During Supination Muscle Forces Craig T, Soltys J, Wilson S University of Florida Schimoler P, Vipperman J, Miller M Wordeman S, Quatman C, Kiapour A, Ditto R, Goel V, Demetropoulos C, University of Kansas University of Pittsburgh Hewett T or a l present The Ohio State University 8:45 Anterior and Middle Deltoid Are Forefoot OrientationA ngle Determines FunctionallyC riticalT argets for Changes in in Vivo Knee Contact Factors Associated with Pressure am Duration andA mplitude of Pronation Nerve Transfer Following C5-C6 Force Through Gait Modification Ulcers: The Effects ofS hear Loads During Walking Root Avulsion Injury Hall A, Besier T, Silder A, Delp S, on Blood Flow Monaghan G, Lewis C, Hsu W, Crouch D, Plate J, Li Z, Saul K D’Lima D, Fregly B Manorama A, Reid Bush T Saltzman E, Hamill J, Holt K Department of Biomedical Engineering, University of Florida Michigan State University Boston University Wake Forest School of Medicine 9:00 Children with Cerebral Palsy Have A Scapulothoracic Joint Model for Increasing Running Step Rate Tissue Deformation in theS eated Increased Variability in Their Stepping Fast and Accurate Simulations of am Reduces Patellofemoral Joint Forces ButtocksM odel Pattern andI ncreased CorticalA ctivity Upper-Extremity Motion Sonenblum S, Cathcart J, Winder J, Lenhart R, Wille C, Chumanov E, During Gait Sprigle S Seth A, Matias R, Veloso A, Delp S Heiderscheit B, Thelen D Arpin D, Wilson T, Kurz M Stanford University Georgia Institute of Technology University of Nebraska Medical Center University of Wisconsin-Madison

Toe-In Gait Reduces the First Effect ofS eat PositionM odifications 9:15 KinematicV ariability at the Shoulder Locomotor AdaptiveL earning is Peak in the Knee Adduction on Upper Extremity Mechanical am is Not Related to Shoulder Pain Moment During Walking in Knee Loading During Manual Wheelchair Impaired in Persons with Parkinson’s During Manual Wheelchair Propulsion Propulsion Disease Osteoarthritis Patients Longworth J, Troy K Shull P, Shultz R, Silder A, Besier T, Requejo P, Mulroy S, Munaretto J, Roemmich R, Nocera J, Hass C Mendoza Blanco M, Wagner E, Mc- University of Illinois at Chicago Cutkosky M, Delp S University of Florida NittGray J Stanford University Center Rancho Los Amigos National Rehabilitation Center

20 oral presentations | saturday, August 18, 10:00 am - 11:15 am or a l present Century A Century B Century C Azalea Gait 2: aNALYSIS Overflow Cypress Overflow Live Oak Thematic PosTers Session Chairs: Rakie Cham, April spine knee 2: ACL muscle 2: imaging Chambers Session Chairs: Dennis Anderson, Session Chairs: Daniel Herman, Session Chairs: Ben Intantolino,

Ting Xia Terese Chmielewski Darryl Thelen a tions | Sa 10:00 Task-SpecificD ifferences in the Knee ArticularC artilageP ressure CorticalC ontribution toW alking ViscoelasticM odeling of the Lumbar DistributionU nder Single- and Spine: The Effect ofP rolonged am Are Revealed by 30-60hz Oscillatory Multi-Axis Loading Conditions:

Flexion on Internal Loads turd EMG Activity Implications for ACL Injury Mechanism Poster Viewing Toosizadeh N, Nussbaum M, Kiapour A, Quatman C, Goel V, Ditto Clark D, Kautz S, Bauer A, Chen Y, Madigan M R, Wordeman S, Levine J, Hewett T, Christou E a Virginia Tech Demetropoulos C y Malcom Randall VA Medical Center University of Toledo Effects ofF ractionalA nisotropy in 10:15 the Corpus Callosum As Determined Forward Bending with Increased On the FatigueL ife of the Anterior Comparison of Sarcomere am by DiffusionT ensor Imaging on Erector Spinae Force Helps Reduce Cruciate Ligament During Simulated Heterogeneity Measured in Temporal Variability in Older Adults Disk HerniationR isk Pivot Landings Passive Live and Fixed Muscle Sukits A, Ledgerwood A, Haney J, Rundell S, Weaver B Lipps D, Wojtys E, Ashton-Miller J Sandercock T, Cash A, Tresch M Chambers A, Cham R, Aizenstein H, Nebes R Armstrong Forensic Engineers University of Michigan Northwestern University University of Pittsburgh Are Internal-External Rotational 10:30 Changes in SpatiotemporalG ait Helical Axis Patterns ofM otion for Moments in ACL Deficient CharacteristicsW hen Anticipating PennationA ngle Variability in Human am the Healthy to Severely Degenerated Subjects Different than Those in Slippery Floors in Young and Older Lumbar Intervertebral Disc Whole Muscle Healthy Subjects? Infantolino B, Challis J Adults Ellingson A, Nuckley D Lanier A, MacLeod T, Manal K, Penn State Berks Chambers A, Cham R University of Minnesota Buchanan T University of Pittsburgh University of Delaware Control of Coronal Plane Kinematics Manipulation of theS tructure of Gait 10:45 Characterization ofI nterlamellar and KineticsD uring a Single Leg Posture and ActivationD ependent Variability with Rhythmic Auditory Variations inS hear Wave Speed am Shear Properties of theA nnulus Hop for Distance in Individuals with Stimulus in the Gastrocnemius Muscle and Fibrosus Anterior Cruciate Ligament Injury Hunt N, Haworth J, McGrath D, Myers S, Aponeurosis Han S, Chen C, Chen Y, Hsieh A Roos P, Button K, Rimmer P, Stergiou N Chernak L, DeWall R, Thelen D University of Maryland van Deursen R Nebraska Biomechanics Core Facility University of Wisconsin-Madison Cardiff University 11:00 On the Ascent: The Soleus Operating Age Differences in theS tabilization Associations ofC ostal Cartilage Knee Joint Loading After ACL of Swing Foot Trajectory in the Length is Conserved to the Ascending am Calcification withP revalent Reconstruction:I nfluence ofG raftT ype Limb of the Force-Length Curve Frontal Plane Vertebral Fractures in Older Adults Manal K, Gardinier E, Snyder-Mackler L, Krishnan V, Rosenblatt N, Latash M, Across Gait Mechanics in Humans Anderson D, Allaire B, Bouxsein M Buchanan T Rubenson J, Neville P, Heok L, Grabiner M Beth Israel Deaconess Medical Center University of Delaware Pinniger G, Shannon D University of Illinois, Chicago The University of Western Australia 21 award presentations | saturday, August 18, 11:30 am - 12:00 pm y a young scientist pre-doc award young scientist post-doc award 11:30 - 11:45 am 11:45 am - 12:00 pm turd

a Phillips center for performing arts Phillips center for performing arts

Jacob Elkins, University of Iowa metin yavuz, ph.d., Ohio College of Podiatric Medicine rds | s a Expedited Computational Analysis of Fracture of Ceramic Plantar Shear Stress and its Clinical Implications w a THA Liners: Obesity and Stripe Wear Considerations

oral presentations | saturday, August 18, 2:00 - 3:30 pm y a Century A Century B Century C Azalea falls Overflow Cypress Overflow Live Oak Thematic PosTers turd Session Chair: Kurt Beschorner, computational modeling running powered exoskeletons Pilwon Hur Session Chairs: Sukyung Park, Session Chair: Irene Davis, Iain & prosthetics Melissa Morrow Hunter Session Chairs: Liz Hsiao-Wecksler, Matthew Major tions | Sa a 2:00 ComputationalM odel of Maximum- Momentum Control Strategies Height Single-Joint Jumping Tibial Stresses in Habitual and pm During Walking in Elderly Fallers Predicts Bouncing As an Optimal Converted Forefoot and Rearfoot Fujimoto M, Chou L Strategy Strike Runners Poster Viewing University of Oregon van Werkhoven H, Piazza S Derrick T, Edwards W, Rooney B Iowa State University Penn State University or a l present

2:15 Effects of Age and Experience on Comparison of Tibial Strains and Magnitude and Time Course of pm Foot Clearance During Up and Development of a Subject-Specific Strain Rates in Barefoot and Shod AdaptationD uring Walking with a Down Stepping VerticalG round Contact Force Model Running Passive ElasticE xoskeleton Beschorner K, Milanowski A, Jackson J, Hass C, Fregly B Altman A, Davis I Charalambous C, Dean J Tomashek D, Smith R University of Florida Biomechanics and Movement Medical University of South Carolina University of Wisconsin-Milwaukee Science, University of Delaware 2:30 Modeling of Head Injury Response Biomechanical and Metabolic Anterior, But Not Posterior Com- for Translational andR otational The Influence ofS tep Frequency Implications ofW earing a Powered pm pensatory Stepping Thresholds, Impacts of Varying Directions and on Muscle ActivityD uring Downhill Exoskeleton to Carry a Backpack Load Are Reduced with Increasing Age Magnitudes Running Gregorczyk K, Adams A, O’Donovan M, Crenshaw J, Grabiner M Stitzel J, Weaver A, Danelson K Sheehan R, Lutz R, Gottschall J Schiffman J, Bensel C, Brown M U.S. Army Natick Soldier Research, University of Illinois at Chicago Virginia Tech - Wake Forest University The Pennsylvania State University Center for Injury Biomechanics Development and Engineering Center 22 oral presentations | continued from page 22 or a l present Century A Century B Century C Azalea falls Overflow Cypress Overflow Live Oak Thematic PosTers Session Chair: Kurt Beschorner, computational modeling running powered exoskeletons Pilwon Hur Session Chairs: Sukyung Park, Session Chair: Irene Davis, Iain & prosthetics Melissa Morrow Hunter Session Chairs: Liz Hsiao-Wecksler, a

Matthew Major tions | Sa 2:45 Effect ofA ge and Lean Direction on A Test of the Metabolic Cost of the Threshold of Balance Recovery Simple FE Models of the Forefoot Cushioning Hypothesis in Barefoot The Effects ofW earing a Spring- for Use in the Design of Therapeutic Loaded Ankle Exoskeleton on pm in Younger, Middle-Aged and Older and Shod Running

Footwear for DiabeticP atients Soleus Muscle Mechanics During turd Adults Tung K, Franz J, Kram R Spirka T, Erdemir A, Cavanagh P University of Colorado Two-Legged Hopping in Humans Carbonneau E, Smeesters C University of Washington Farris D, Sawicki G Universite de Sherbrooke a North Carolina State University & y UNC-Chapel Hill

Kinematics, Kinetics and Muscle Gait Mode Recognition Using an 3:00 A Computational Model for Vertical Load Distribution in the Activation Patterns of the Upper Convection-Enhanced Delivery in InertiaM easurement Unit on a pm Extremity During Simulated Metatarsals During Shod Running Powered Ankle-Foot-Orthosis a Hind Limb Tumor Becker J, Howey R, Osternig L, James Forward Falls. Li Y, Hsiao-Wecksler E Magdoom-Mohamed K, Pishko G, S, Chou L Burkhart T, Clarke D, Andrews D Sarntinoranont M University of Oregon University of Illinois at Urbana- Western University University of Florida Champaign

3:15 Clinical Balance Measures Are Electromyographic Effects ofU sing Is Push-OffP ropulsion Energetically Modulation of Stiffness on Impact Associated with Variability of a Powered Ankle-Foot Prosthesis pm Optimal for Accelerated Gait? Loadings During Running Inter-Joint Coordination During Williams M, Grabowski A, Herr H, Oh K, Baek J, Ryu J, Park S Cheung R, Rainbow M, Altman A, Walking in Elderly Adults D’Andrea S Davis I Chiu S, Chou L Korea Advanced Institute of Science Center for Restorative and Regenerative Harvard Medical School University of Oregon and Technology (KAIST) Medicine, PVAMC

23 SIMPLEWARE RELEASE 5.0 O U T N O W ! Save the Date

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About Simpleware Ltd. Simpleware develops world-leading software solutions for the conversion of 3D image data into high-quality CAD, Rapid Prototype, CFD and Finite Element models. Simpleware customers range from international blue chip corporations to research institutes and universities world-wide.

www.simpleware.com poster session overview & quick reference poster presentations At least one named author is required to be present at each poster during its designated poster session. There will be two formal poster sessions: poster session 1: thursday, from 3:30 - 6:30 pM poster session 2: friday, from 8:00 - 11:00 aM

General posters must be mounted by 3:15 pm (Thursday) or 7:45 am (Friday) and removed by 6:45 pm (Thursday) and 11:15 am (Friday). Any poster not removed will be discarded. Posters from Thematic Poster Sessions will also be viewed during these general poster sessions. Odd-numbered posters will be presented during the first 90 minutes of the session. Even-numbered posters will be presented during the second 90 minutes of the session. poster session overview poster session 1 poster session 2 topic poster # location page topic poster # location page

Bone 1-5 hickory 27 amputee gait A1-A6 Azalea 40 Cell & Tissue Mechanics 6-12 Hickory 27 comparative 173-175 dogwood 41 Clinical 134-156 ballroom a 37,38 computational biomechanics C1-C5 azalea 40 Computational Modeling 37-50 dogwood 30 gait 277-313 ballroom a 48-50 Ergonomics 80-90 ballroom a 33 instrumentation 271-276 ballroom a 48 Falls 103-113 ballroom a 35 knee 176-192 dogwood 41,42 Imaging 17-24 hickory 28 muscle M1-M4 ballroom a 53 Journal Awards J1-J4 azalea 26 powered exoskeletons P1-P5 ballroom a 53 Lower Extremity 91-102 ballroom a 34 prosthetics & orthotics 314-332 ballroom a 51,52 Methods 51-64 ballroom a 31 running 221-241 ballroom a 44,45 Motor Control 65-79 ballroom a 32 seating S1-S5 ballroom a 52 Muscle 13-16 hickory 28 sports 242-270 ballroom a 46,47 Obesity O1-O4 azalea 26 spine 193-202 dogwood 42,43 Orthopedics 25-36 dogwood 29 upper extremity 203-220 hickory 43,44 Posture & Balance 114-133 ballroom a 36,37 rehabilitation 157-168 ballroom a 39 stroke S1-S4 azalea 26 wheelchair biomechanics 169-172 ballroom a 39

25 poster session 1 | thursday, 3:30 - 6:30 azalea (thursday Thematic Posters)

stroke odd numbers present 5:00 - 6:30 even numbers present 3:30 - 5:00

s1 Scapulohumeral Kinematics in Individuals with Upper Extremity s2 Gait Training with Visual and Proprioceptive Feedback Improves Impairment from Stroke Overground Propulsive Forces in People Post-Stroke Finley M, Combs S Wutzke C, Michael L Krannert School of Physical Therapy University of Indianapolis University of North Carolina at Chapel Hill

s3 Comparison of Module Quality and Walking Performance of Hemiparetic s4 Distinct Patterns of Recovery Following Therapeutic Intervention Post- Subjects Pre and Post Locomotor Rehabilitation Therapy Stroke: Responders vs. Non-Responders Routson R, Clark D, Bowden M, Kautz S, Neptune R Patil S, Patten C Department of Mechanical Engineering, The University of Texas at Austin University of Florida

tic posters posters tic obesity a odd numbers present 5:00 - 6:30 even numbers present 3:30 - 5:00

y them y The Issue of Tissue: A Comparison of Kinematic Models in Obese Adults Changes in Gait Over a 30 Minute Walking Session in Obese Individuals a o1 o2 Board W, Haight D, Browning R Do Biomechanical Loads Increase in Pursuit of Weight Loss? Colorado State University Singh B, Janz K, Yack H University of Iowa : thursd : o3 Impact of Obesity on the Function of Hip Knee and Ankle During Transition Between Level and Stair Walking o4 Obesity Modifies Canine Gait Umezaki K, Ramsey D Brady R, Sidiropoulos A, Bennett H, Rider P, Domire Z, DeVita P East Carolina University posters 1 posters University at Buffalo obesity odd numbers present 5:00 - 6:30 even numbers present 3:30 - 5:00

j1 Do Skeletal Muscle Properties Recover Following Repeat Botulinum j2 Plantar Shear Stress Distributions in Diabetic Patients with and Without Toxin Type-A Injections? Neuropathy Fortuna R, Horisberger M, Vaz M, Herzog W Yavuz M, Franklin A, McGaha R, Prakash V, Rispoli J, Stuto J, Torrence University of Calgary G, Lowell D, Canales M Ohio College of Podiatric Medicine j3 Compressive Loading of the Distal Radius Improves Bone Structure in Young Women j4 Simulation Predictions of Prosthetic Foot and Muscle Function in Troy K, Bhatia V, Edwards W Response to Altered Foot Stiffness During Below-Knee Amputee Gait University of Calgary University of Illinois at Chicago Fey N, Klute G, Neptune R 26 The University of Texas at Austin poster session 1 | thursday, 3:30 - 6:30 hickory

bone odd numbers present 5:00 - 6:30 even numbers present 3:30 - 5:00

1 A Linear Actuated Torsional Device to Replicate Clinically Relevant Spiral 2 DXA Derived Measures of Bone Mineral Can Reliably Predict Mechanical Fractures in Long Bone Behavior of Proximal Tibias Loaded in Torsion Edwards W, Troy K Edwards W, Troy K University of Illinois at Chicago University of Illinois at Chicago posters 1

3 The Influence of Occlusal Splinting on the Trabecular Morphology in the 4 Variability of Strain and Strain Rate in the Human Tibial Diaphysis SagittalP lane of the Temporomandibular Joint During Walking

Zaylor W, Sindelar B, Cotton J Rooks T, Leib D, Sasaki K, Dugan E : bone | cell & tissue mech Ohio University, Mechanical Engineering US Army Aeromedical Research Laboratory

5 A Modeling Framework for Examining Changes in Femoral Strength due to Long Duration Bedrest Genc K, Cavanagh P Simpleware Ltd.

cell & tissue mechanics odd numbers present 5:00 - 6:30 even numbers present 3:30 - 5:00 a nics 7 A Protocol to Assess the Contribution of the Components of Human 6 Mapping the Mechanical Topography of Healthy Tibial Cartilage Abdominal Wall to Its Biomechanical Reponse Deneweth J, Sylvia S, Newman K, McLean S, Arruda E Tran D, Mitton D, Voirin D, Guerin G, Turquier F, Beillas P University of Michigan Universite de Lyon, France 8 A Micromechanical Analysis on Diffuse Axonal Injury for Heterogeneous 9 Loading History of the Mechanical Properties of Human Heel Pads Brain Tissue Gales D, Challis J Soheilypour M, Khorshidi M, Peyro M, Abolfathi N, Naei M Pennsylvania State University University of Tehran

11 Physiologically Modeled Shear Stress As a Function of Pulse Frequency: 10 Optically BasedI ndentation for BrainT issue: A New Histological Approach Driving Endothelial Cells Toward a Quiescent Phenotype Canchi S Uzarski J, McFetridge P University of Florida University of Florida 12 Boundary ConditionsA ffectM echanical Behavior of In-Situ Chondrocytes Moo E, Han S, Jinha A, Abusara Z, Abu Osman N, Pingguan-Murphy B, Herzog W University of Malaya 27 poster session 1 | thursday, 3:30 - 6:30 hickory

muscle odd numbers present 5:00 - 6:30 even numbers present 3:30 - 5:00

13 Training Induced Changes in Quadriceps Activation During Maximal 14 Aging is All Relative: Modeling the Relationship Between Strength and Eccentric Contractions Fatigue on Endurance Time in Older Adults Voukelatos D, Pain M Frey Law L, Avin K, Tumuluri A School of Sport, Health and Exercise Sciences, Loughborough University The University of Iowa

15 The Role of the Latissimus Dorsi Muscle in Pelvic Girdle and Trunk 16 Muscle Stiffness and Response to Exercise in Caloric Restricted and Ad Rotations Libitum-Fed Elderly Rats Patel J, Sumner A, Fox J, Romer B, Rehm J, Campbell B, Weimar W Pauwels L, Dowling B, Okafor N, Breighner R, Domire Z ging ging Texas Tech University a Auburn University

imaging odd numbers present 5:00 - 6:30 even numbers present 3:30 - 5:00 : muscle | im | muscle : 17 StaticC omparison of Subtalar Joint Neutral and Neutral Cushioning 18 A Framework for Visualizing Biomechanical Movement for Designers Running Shoes to Barefoot Stance Using Markerless Radiostereometric Within 3D Modeling Programs

posters 1 posters Analysis Schwartz M, Viswanathan J Balsdon M, Bushey K, Dombroski C, Jenkyn T University of Michigan University of Western Ontario 20 Thalamic Projection Fiber Integrity in De Novo Parkinson’s Disease 19 Geometric Accuracy of Physical and Surface Models Created from Planetta P, Schulze E, Geary E, Goldman J, Corcos D, Little D, Vaillancourt D Medical Image Data University of Florida McCoy S, Piller G, Collins C, Sokn S, Ploeg H University of Wisconsin Madison 22 An MRI-Compatible Device for Obtaining Patient-SpecificP lantar Soft Tissue Material Properties 21 Automated Analysis of 3D Glenoid Version Stebbins M, Fassbind M, Cavanagh P, Haynor D, Chu B, Ledoux W Ghafurian S, Galdi B, Tan V, Li K VA Puget Sound Rutgers University 24 Measurement of MTPJ Cartilage Thickness Distribution Using 14T MRI 23 Reliability of Lumbar Vertebra Position and Orientation Measurement Kumar A, Lee D, Cavanagh P Using Weight-Bearing MRI Asian Institute of Tele-surgery Simons C, Davidson B, Cobb L University of Denver 28 poster session 1 | thursday, 3:30 - 6:30 dogwood

orthopedics odd numbers present 5:00 - 6:30 even numbers present 3:30 - 5:00

25 A Markov Chain Model Predicts Early Failure of Rotator Cuff Tear Repairs 26 Design Study of Stability and Safety of Median Sternotomy Fixation Donnell D, Carpenter J, Miller B, Hughes R Price N, Kim N, Wilcox B, Hatcher B University of Michigan Department of Orthopaedic Surgery University of Florida

27 Is There a Gold Standard for Rotational Alignment of the Tibial Kinematical and Load Sharing Effect of a Novel Posterior Dynamic Component During TKA? 28 Stabiization System Implnated in Lumbar Spine Hutter E, Granger J, Beal M, Siston R Erbulut D, Kiapour A, Oktenoglu T

The Ohio State University Koc University posters 1 : orthopedics

29 Does Interlimb Kinematic Symmetry Exist During Stair Ascent After 30 Biomechanical Effects of Component Alignment Variability in Total Unicompartmental Knee Arthroplasty? Knee Arthroplasty: A Computer Simulation Study of an Oxford Rig Simpson K, Fu Y, Kinsey T, Brown-Crowell C, Mahoney O Lemke S, Beal M, Piazza S, Siston R University of Georgia Biomechanics Laboratory The Ohio State University

31 Loading Patterns During a Step-Up-And-Over Task in Individuals 32 Computer Navigation As an Investigational Tool for ACL Reconstruction Following Total Knee Arthroplasty Drewniak-Watts E, Shalvoy R, D’Andrea S Pozzi F, Alnhadi A, Zeni J, Snyder-Mackler L Providence VA Medical Center; Alpert Medical School of Brown University University of Delaware 34 Comparison of Stress DistributionP atternsW ithin Trigonal, Quadrangle, 33 Asymmetric Morphology of the Hamstring Muscles Following ACL and Hexagonal Srew Drive Designs of an ACL Interference Screw Using Autografts Finite Element Analysis Suydam S, Manal K, Buchanan T Flowers J, McCullough M University of Delaware North Carolina A&T State University

35 Computer Planning of Arthroscopic Femoroacetabular Impingement 36 Computer Methods for Designing Artificial Talus Bone in Ankle Joint Surgery Islam K, Dobbe A, Adeeb S, El-Rich M, Duke K, Jomha N Li J, Theiss M University of Alberta Inova Fairfax Hospital

29 poster session 1 | thursday, 3:30 - 6:30 dogwood

computational modeling odd numbers present 5:00 - 6:30 even numbers present 3:30 - 5:00

37 Comparison of Finger Interaction Matrix Computation Techniques 38 Modeling the Demands of a Dance Jump: A Mismatch Between Martin J, Terekhov A, Latash M, Zatsiorsky V Mechanical Demands and Aesthetic Constraints Penn State Jarvis D, Valero-Cuevas F University of Southern California 39 Development of an Efficient Fluid-Structure Interaction Solver for Applications to the Vascular System 40 Effects of Exercises for Prevention of Femoral Neck Fracture Based on Fernandez C, Berceli S, Garbey M, Kim N, Tran-Son-Tay R Dynamics and Finite-Element Moel Simulation University of Florida Qian J, Zhang H, Li Z, Bian R, Zhang S Nanjing Institute of Physical Education, Nanjing l modeling modeling l a 41 Patient-Specific Musculoskeletal Modeling for Evaluating the Efficacy of Meniscus Transplantation 42 Finite Element Modeling of Interaction of Implantable Cardiac Rhythm tion Zheng L, Aiyangar A, Carey R, Lippert C, Harner C, Zhang X Devices During Frontal Motor Vehicle Deceleration Injuries a University of Pittsburgh Belwadi A, Jacob S, Repalle T, Yang K Biomedical Engineering Department, Wayne State University, Detroit, MI 43 A Novel Statistical Method for EMG-To-Moment Estimation During Gait : comput : Meyer A, Patten C, Fregly B 44 A Phenomenological Human Energy Expenditure Model in Joint Space University of Florida Roberts D, Kim J Polytechnic Institute of New York University Residual Elimination Algorithm Improvements for Forward Dynamic posters 1 posters 45 Simulation ofG ait 46 Hamstrings Weakness Increases ACL Loading During Sidestep Cutting Jackson J, Hass C, Fregly B Weinhandl J, Earl-Boehm J, Ebersole K, Huddleston W, Armstrong B, University of Florida O’Connor K Old Dominion University 47 Ulna Simulation Assesses Sensitivity to Bone Elastic Modulus Variations in a MRTA Test Highly Automated Methods for Subject-Specific, Population-Wide Cotton J, Bowman L, Stroud C 48 Investigations of Habitual Contact Stress Exposure in the Knee Ohio University Kern A, Segal N, Lynch J, Sharma L, Anderson D University of Iowa 49 Is Push-Off Propulsion Energetically Optimal for Accelerated Gait? Oh K, Baek J, Ryu J, Park S 50 The Importance of Accounting for Knee Laxity When Simulating Gait Mechanical Engineering dept. KAIST Schmitz A, Thelen D University of Wisconsin-Madison

30 poster session 1 | thursday, 3:30 - 6:30 ballroom a

methods odd numbers present 5:00 - 6:30 even numbers present 3:30 - 5:00

51 Statistically-Significant Contrasts Between EMG Waveforms Revealed 52 Study on Anthropometric Measurement on Korean Skeletal Systems Using Wavelet-Based Functional Anova Based on Cadaveric CT Images McKay J, Welch T, Vidakovic B, Ting L Ko C, Cho D, Chun K Emory University and Georgia Institute of Technology Gerontechnology R&D Group, Korea Institute of Industrial Technology (KITECH)

53 Inter-Segmental Coordination Variability During Locomotion - Do 54 Designing Training Sample Size for Support Vector Machines Based on Different Analytical Approaches Tell the Same Story? Kinematic Gait Data Armour Smith J, Gordon J, Kulig K Fukuchi R, Stirling L, Ferber R

University of Southern California University of Calgary posters 1 : methods

55 EMG Normalization Techniques for Patients with Pain 56 Inertial Estimate Errors for Female Arms and Legs from Different Body Ettinger L, Weiss J, Karduna A Models University of Oregon Wicke J, Dumas G William Paterson University 57 A Robust Kinematic Based Event Detection Algorithm That Works for Walking and Running on Both Uphill and Downhill Surfaces 58 A Comparison of Position Measurement Accuracy Using Two Different Sheehan R, Gottschall J Camera Arrangements The Pennsylvania State University Denning W, Hunter I, Seeley M Brigham Young University 59 Surgical Simulation Validating Methods to Improve Orthopaedic Resident Skills Competency 60 Evaluating Knee Stability After Total Knee Arthroplasty Using Inertial Ohrt G, Karam M, Thomas G, Kho J, Yehyawi T, Marsh J, Anderson D Measurement Units University of Iowa Roberts D, Khan H, Kim J, Slover J, Walker P Polytechnic Institute of New York University 61 Quantification Impaction System for a Large Survival Model of Intraarticular Fracture 62 Empirical Plantar Pressure Insole Pose Estimation Diestelmeier B, Rudert M, Tochigi Y, Baer T, Fredericks D, Brown T Sinsel E, Lebiedowska M, Buczek F University of Iowa NIOSH

63 Neural Networks Based Identification of Joint Moments Using Nonlinear 64 Kinect Abnormal Involuntary Motion Assessment System: Increased Model of Sit-To-Stand Reliability of Testing for Tardive Dyskinesia Abdulrahman A, Iqbal K Szajnberg L, Roberts D, Karlin D University of Arkansas at Little Rock New York University

31 poster session 1 | thursday, 3:30 - 6:30 ballroom a

motor control odd numbers present 5:00 - 6:30 even numbers present 3:30 - 5:00

65 Adaptive Changes in Finger Force Variance in Response to Index Finger 66 Non-Negative Matrix Factorization Applied to a Feedback System Fatigue in Unimanual and Bimanual Tasks van Antwerp K, Burkholder T Singh T, Zatsiorsky V, Latash M Georgia Institute of Technology Pennsylvania State University 68 Coupling of Oscillatory Motion: The Impact of Voluntary and 67 Performance Optimality and Variability Studied at the Level of Phsyiological Tremor on Posture Hypothetical Commands Morrison S, Cortes N, Kerr G, Newell K Martin J, Terekhov A, Latash M, Zatsiorsky V Old Dominion University Penn State 70 Sensory Reweighting for Visually Induced Roll Tilt Perception Under Two-Weeks of Unloaded Precision Training Improves Motor Performance 69 Sensory Conflict Conditions in Older Adults to the Level of Young Adults Lim H, Park H, Park S Baweja H, Larkin K, Tanner E, Moore M, Christou E University of Florida KAIST : motor control motor : 71 The Effects ofV isual Feedback and Aging on Force OscillationsW ithin 0-1 Hz 72 Endpoint Instructions Result in Higher Proprioceptive Acuity than Joint Fox E, Baweja H, Kim C, Vaillancourt D, Christou E Angle Instructions University of Florida Hyler J, Karduna A posters 1 posters University of Oregon 73 Impaired Endpoint Accuracy in Older Adults is Associated with Greater Time Variability 74 Maximum Voluntary Force Production Changes with Visual Feedback Kwon M, Chen Y, Reid J, Fox E, Christou E Modulation During Multi-Finger Pressing University of Florida Karol S, Kwon H, Koh K, Shim J University of Maryland, College Park 75 Kinematics and Kinetics of Stair Ascent while Dual-Tasking Vallabhajosula S, Tan C, Davidson A, Mukherjee M, Siu K, Yentes J, 76 Older Adults Exhibit an Impaired Ability to Predict Movement Accuracy McGrath D, Myers S due to Greater Motor Output Variability Nebraska Biomechanics Core Facility, University of Nebraska at Omaha Chen Y, Kwon M, Reid J, Fox E, Christou E University of Florida 77 Task DifficultyE xacerbates the Age Associated Differences inF orce Control Kim C, Onushko T, Christou E Trial-To-Trial Control Dynamics in Redundant Reaching Tasks Neuromuscular Physiology Lab, APK, HHP, University of Florida 78 Smallwood R, Cusumano J, Dingwell J 79 Interhemispheric Inhibition andM otor Lateralization:R elationship toA ge University of Texas at Austin Lodha N, Corti M, Triggs W, Patten C University of Florida 32 poster session 1 | thursday, 3:30 - 6:30 ballroom a

ergonomics odd numbers present 5:00 - 6:30 even numbers present 3:30 - 5:00

81 Study on Lumbar Morphological Measurements of Korean Adults and 80 Study on Wheelbase Design Parameters of a Shower Carrier Through the Elderly Drivability Tests Lee E, Kang I, Park S, Yang J, Cho D, Ko C, Chun K Ko C, Cho D, Chun K Korea University Guro Hospital Gerontechnology R&D Group, Korea Institute of Industrial Technology (KITECH)

83 The Effects of Load Carriage and Fatigue on Frontal-Plane Knee 82 A Hybrid Model SimulatingH and Gripping on a Cylindrical Handle Mechanics During Walking Wu J, Dong R, Warren C, Welcome D, McDowell T

Wang H, Frame J, Ozimek E, Leib D, Dugan E National Institute for Occupational Safety and Health (NIOSH) posters 1 : ergonomics Ball State University 84 The Effect of Extended Durations of Walking in Occupational Footwear 85 Intersegmental Adaptation ofL umbar Spine on DifferentL oad-Carrying Types on Balance Shin J, Park Y, Kim Y, Kim Y Chander H, Garner J, Wade C University of Kyung Hee Applied Biomechanics Laboratory, The University of Mississippi

87 Lower Limb Coordination is Altered During Asymmetric Load Carrying 86 Mimetic Jar Device Capable of Measuring Dynamic Opening Forces: while Walking on a Treadmill Development and Validation Wang J, Roemmich R, Tillman M Ellingson A, Ferkul M, McGee C, Mathiowetz V, Nuckley D University of Florida University of Minnesota

89 A Nonlinear Hand-Arm Model for Interaction with Impulsive Forces 88 Influence of Object Size and Hand Posture on Upper Limb Joint Loads Ay H, Luscher A, Sommerich C, Berme N During One-Handed Lifting Exertion The Ohio State University Zhou W, Armstrong T, Wegner D, Reed M University of Michigan

90 Cervical and Masticatory Muscles Activity During a 30 Minutes Laptop Typing Task - a Preliminary Study Barbara D, Edward H, Gadotti I Florida International University

33 poster session 1 | thursday, 3:30 - 6:30 ballroom a

lower extremity odd numbers present 5:00 - 6:30 even numbers present 3:30 - 5:00

91 A Potential Role of Eversion in Limiting Medial and High Ankle Sprains: A 92 Varying Foam Surface Thickness Does Not AffectL anding EMG Pre- Parametric Study Activation in Active Females Wei F, Haut R Lippa N, Krzeminski D, Goetz J, Piland S, Rawlins J, Gould T Kessler Foundation Research Center University of Southern Mississippi

93 Validation of an Electrogoniometry System As a Measure of Knee 94 Muscle Activity Patterns of Lower Limb During Lateral (Frontal) Side Kinematics During Activities of Daily Living Stepping Task Modulation from Different Heights Urwin S, Kader D, Caplan N, St Clair Gibson A, Stewart S Bhatia D, Novo M, Munoz M, Bejarano T, Jung R, Brunt D Northumbria University Adaptive Neural Systems Lab, Department of Biomedical Engineering, Florida International University, Miami 95 Comparison of Hip Morphology in Femoroacetabular Impingement and Normal Patients 96 Effect of the Foot Toe-Out Angle on the Knee Adduction Moment During Weaver A, Rucker L, Urban J, Theivendran K, Stitzel J Walking and Running

: lower extremity lower : Virginia Tech-Wake Forest University Center for Injury Biomechanics Alcantara C, Castanharo R, Duarte M Universidade de Sao Paulo 97 Effects of Regional Foot Pain on Plantar Pressure and Loading Riskowski J, Dufour A, Hagedorn T, Casey V, Hannan M 98 Effects of Volitional Preemptive Abdominal Contraction on Trunk and posters 1 posters Institute for Aging Research / Harvard Medical School Lower Extremity Biomechanics and Neuromuscular Control During a Drop Vertical Jump 99 The Effects of Leg Dominance, Neuromuscular Training, and Fatigue on Haddas R, Hooper T, Sizer P, James R Bilateral Lower Extremity Kinematics Texas Tech University Health Sciences Center Greska E, Cortes N, Ringleb S, Samaan M, Van Lunen B Old Dominion University 100 Influence ofE ccentric Body Weight on the Knee Balance of Obese Patients Li J, MacMahon E, Theiss M 101 Knee Kinematics During Sloped Walking and Running in Healthy Women Inova Fairfax Hospital with Knee Hyperextension Teran-Yengle P, Bissig K, Paige A, Rogers A, Yack H 102 The Influence of Prophylactic Ankle Braces on Lower Limb Mechanics University of Iowa During Single-Leg Hopping Tasks Anderson A, Boros R, Stodden D, Yang H Texas Tech University

34 poster session 1 | thursday, 3:30 - 6:30 ballroom a

falls odd numbers present 5:00 - 6:30 even numbers present 3:30 - 5:00

103 Age-Related Redistribution of Hip and Knee KineticsD uring Out-And- 104 Altered Movement Strategy During Sit-To-Walk in Elderly Adults with Back Stepping History of Falling Schulz B Chen T, Chou L VA HSR&D/RR&D Center of Excellence, Maximizing Rehabilitation Outcomes University of Oregon

105 Age-Related Differences in the Stepping Response to Laterally-Directed 106 Knee Joint Loading During a Compensatory Step: Preliminary Data for Disturbances Observing Recovery Responses in Knee Osteoarthritic Patients Hurt C, Grabiner M Hoops M, Rosenblatt N, Skoirchet A, Grabiner M Universtiy of Illinois at Chicago University of Illinois at Chicago posters 1 : f

107 Fall Detecting Using Inertial and Electromyographic Sensors 108 Association Between Strength, Kinematics, and the Energy Cost of Yang B, Liao S Walking in Older, Female Fallers and Non-Fallers National Chiao Tung University Marques N, Hallal C, LaRoche D, Crozara L, Morcelli M, Karuka A,

Navega M, Goncalves M a lls 109 Strength, Power and Electromyographic Performance of Hip Sao Paulo State University Musculature in Older Female Fallers and Non-Fallers Zamfolini Hallal C, Morcelli M, Fernandes Crozara L, Ribeiro Marques N, 110 The Effects of Fatigue on Recovery from a Postural Perturbation Martineli Rossi D, LaRoche D, Goncalves M, Navega M McClain M, Dickin C, Wang H Sao Paulo State University Ball State University

111 Common Head AccelerationE xposures in the Early Pediatric Population 112 Investigating the Link Between Kinematic Deviations and Recovery Desautels D, Serina E Response to Unexpected Slips Talas Engineering, Inc. Hur P, Beschorner K University of Wisconsin-Milwaukee 113 Which Muscles Limit the Ability of Older Adults to Recover Balance? Kadono N, Pavol M University of Ottawa

35 poster session 1 | thursday, 3:30 - 6:30 ballroom a

posture & balance odd numbers present 5:00 - 6:30 even numbers present 3:30 - 5:00

115 The Effect of VibrotactileS timulation onL ong Range Correlation of 114 Stability Radius As a Method for Comparing the Dynamics of Stride Interval Time Series Among Different Walking Speeds Neuromechanical Systems Chien J, Huang C, Vallabhajosula S, Mukherjee M, Siu K, Stergiou N Bingham J, Ting L Nebraska Biomechanics Core Facility, University of Nebraska at Omaha Georgia Institute of Technology

117 Using Stationary and Non-Stationary Measures of Balance to Assess 116 Lingering Impairments in Postural Control, Despite Symptom Resolution, nce nce a Handstand Performace Following a Concussion. l a Blenkinsop G, Pain M, Hiley M Buckley T, Tapia-Lovler T, Munkasy B Loughborough University Georgia Southern University

119 Individuals with Diminished Hip Abductor Muscle Strength Exhibit 118 Response to Medio-Lateral Perturbations of Human Walking and Higher Moments & Neuromuscular Activation at the Ankle During Running

: posture & b & posture : Unipedal Balance Tasks Qiao M, Hughes M, Jindrich D Lee S, Powers C Arizona State University University of Southern California 120 Validation and Calibration of the Wii Balance Board As an Inexpensive 121 Margin of Stability As a Metric for Balance Impairment in MultipleS clerosis Force Plate Cutler E, Wurdeman S, McGrath D, Myers S, Stergiou N, Huisinga J Bartlett H, Bingham J, Ting L University of Nebraska at Omaha Georgia Institute of Technology poster session 1 session poster 123 Stabilogram Diffusion Analysis Applied to Dynamic Stability: One-Legged 122 Children with Cerebral Palsy May Not Benefit from Stochastic Vibration Landing from a Short Hop When Developing Independent Sitting Heise G, Smith J, Liu K Yu Y, Vallabhajosula S, Haworth J, Stergiou N, Harbourne R University of Northern Colorado Nebraska Biomechanics Core Facility, University of Nebraska at Omaha

125 The Use of a Platform for Dynamic Simulation of Movement: Application 124 Postural Sway Changes in Altered Sensory Environments Following to Balance Recovery Individualized Whole Body Vibration Mansouri M, Clark A, Reinbolt J Dickin D, Hubble R, Heath J, Beltran E, Haggerty M University of Tennessee Biomechanics Laboratory - Ball State University

127 The Effect ofD ifferentF oams on Posturography Measures in Healthy and 126 Effect of Obesity and Overweight on Postural Balance in Children from Impaired Populations 7 to 14-Years-Old Petit D, Bigelow K de David A, Barbacena M University of Dayton University of Brasilia 36 poster session 1 | thursday, 3:30 - 6:30 ballroom a

posture & balance (continued) odd numbers present 5:00 - 6:30 even numbers present 3:30 - 5:00

129 The Relationship Between Structural and Spatial Variability of Postural 128 The Influence ofR epetitiveL oads on Foot Sensitivity andD ynamic Balance Control in Persons with Parkinson Disease Hamilton S, Raisbeck L, Roemer K Amano S, Stegemöller E, Altmann L, Hass C Michigan Technological University posters 1 : posture & b a l nce (con’t)a l | clinic University of Florida 130 Impact of Dual-Tasking on Lower Joint Dynamics During Stair Ascension 131 Effects ofM ultifocalL ens Glasses on Stepping Accuracy During Step Down Davidson A, Vallabhajosula S, Tan C, Mukherjee M, Siu K, Yentes J, Beschorner K, Dyapa S, Moore C, Tomashek D, Keenan K McGrath D, Myers S University of Wisconsin-Milwaukee Nebraska Biomechanics Core Facility, University of Nebraska at Omaha

133 The Effect of Age and Movement Direction onR apid and Targeted Center 132 Postural Control Model of Spasticity in Persons with Multiple Sclerosis of Pressure Submovements while Crouching Boes M, Hsiao-Wecksler E, Motl R, Sosnoff J Hernandez M, Ashton-Miller J, Alexander N University of Illinois at Urbana-Champaign University of Michigan

clinical odd numbers present 5:00 - 6:30 even numbers present 3:30 - 5:00

135 The Gait Pattern of Children with Cerebral Palsy Has Greater Stochastic 134 Children with Cerebral Palsy Do More Positive Mechanical Work After Features Gait Rehabilitation Kurz M, Harbourne R Kurz M, Stuberg W, Arpin D, Gosselin M University of Nebraska Medical Center University of Nebraska Medical Center

137 Dual-Task Walking and Computerized CognitiveT ests in Assessing 136 The Gait Variability Profile of Patients with Parkinson’s Disease When Concussed High School Athletes Compared to Older Adults with Mobility Disability and a History of Falls. Howell D, Osternig L, Chou L Nocera J, Okun M, Skinner J, Hass C University of Oregon 1Department of Veterans Affairs

Emotion As a Gait Therapy in Parkinson’s Patients: Affective Stimuli & 138 Effect of L-Dopa on Multi-Finger Synergies and Anticipatory Synergy 139 Gait Pattern Variability Adjustments in Parkinson’s Disease Beatty G, Roemmich R, Naugle K, Janelle C, Hass C Park J, Zatsiorsky V, Lewis M, Huang X, Latash M University of Florida Pennsylvania State University, University Park The Impact of Obesity on the Accuracy of Predicting Body Fat 141 Gait Compensations in a Rat Medial Meniscus Transection Model of Percentage in Older Men 140 Parise E, Chambers A, McCrory J, Cham R Knee Osteoarthritis Allen K, Mata B, Gabr M, Huebner J, Kraus V, Setton L University of Pittsburgh University of Florida 37 poster session 1 | thursday, 3:30 - 6:30 ballroom a clinical (continued) odd numbers present 5:00 - 6:30 even numbers present 3:30 - 5:00

143 Distinct Features of Grip Force Characterize Parkinson’s Disease and 142 The Influence of Merged Muscle Excitation Modules on Post-Stroke Atypical Parkisonian Disorders Hemiparetic Walking Performance Neely K, Planetta P, Prodoehl J, Corcos D, Comella C, Goetz C, Allen J, Kautz S, Neptune R Shannon K, Vaillancourt D The University of Texas at Austin University of Florida 144 Differences in Repetitive Finger Movement Between the Most Effected 145 Changes in Muscle Co-Activation in Spinal Cord Injured Individuals After and Least Effected Hand in Parkinson’s Disease Stegemöller E, MacKinnon C, Tillman M, Hass C Body-Weight Supported Treadmill Training University of Florida Lee S, Pauhl K, Lam T, Wakeling J Simon Fraser University 146 Walking Abnormalities in Patients with COPD Yentes J, Rennard S, Stergiou N 147 Computerized Gait Analysis and Lumbar Range of MotionA ssessments Nebraska Biomechanics Core Facility in People with Lumbar Spinal Stenosis Conrad B, Abbasi A, Vincent H, Seay A, Kennedy D 148 Spatiotemporal Gait Asymmetry is Related to Balance/Fall Risk in University of Florida Individuals with Chronic Stroke Bradley C, Wutzke C, Zinder S, Lewek M 149 Using MRI-Based Muscle Volumes and Gait Analysis to QuantifyR elative University of North Carolina at Chapel Hill posters 1 : clinic a l (con’t) posters Muscle Effort inC hildren with Cerebral Palsy Russell S, Handsfield G, Boyle M, Sauer L, Meyer C, Abel M, Blemker S 150 The Relationship BetweenL ower Extremity Joint Power During Sit to Stand University of Virginia and Clinical Measures of FunctionA mong Subjects Post Hip Fracture Kneiss J, Houck J, Hilton T 151 Frequency Domain Analysis of Ground ReactionF orce Does Not MGH Institute of Health Professions Differentiate BetweenH yperkinetic andH ypokineticM ovement Disorders. Skinner J, Roemmich R, Amano S, Stegemöller E, Altmann L, Hass C 152 Patients with Peripheral Arterial Disease Exhibit Greater Toe Clearance than Healthy Controls University of Florida Rand T, Wurdeman S, Johanning J, Pipinos I, Myers S Nebraska Biomechanics Core Facility 153 The Effect of Anesthetic Hip Joint Injections onG ait Kennedy D, Sun D, Vincent H, Seay A, Abbasi A, Conrad B 154 Pelvic Excursion During Walking Post-Stroke University of Florida Little V, McGuirk T, Perry L, Patten C University of Florida 155 Altered Hip Movement in Females with Hip Pain During Single Leg Step Down Lewis C 156 Mechanical Cueing Using a Portable Powered Ankle-Foot Orthosis Boston University Petrucci M, MacKinnon C, Hsiao-Wecksler E University of Illinois at Urbana-Champaign 38 poster session 1 | thursday, 3:30 - 6:30 ballroom a rehabilitation odd numbers present 5:00 - 6:30 even numbers present 3:30 - 5:00

157 Biomechanical Analysis of Discrete Versus Cyclic Reaching in Survivors of Stroke 158 Preliminary Study of Changes in Trunk Forward Bend Aberrant Patterns Massie C, Malcolm M, Greene D, Browning R Post Core Stabilization Intervention Colorado State University Wattananon P, Biely S, Sung W, Cannella M, Silfies S Drexel University 159 Partnered Human-Robot Stepping Based on InteractiveF orces at the Hand

Chen T, McKay J, Bhattacharjee T, Hackney M, Kemp C, Ting L 160 Gender Effects on Lower Extremity Biomechanics in Adolescent Patients posters 1 : reh a bilit Georgia Institute of Technology Following ACL Reconstruction Dai B, Butler R, Garrett W, Queen R 161 The Effect of Kinesio Taping on Kinematics andM uscle Activity for Duke University Subjects with Neck Pain Lee S, Chen G, Chou M, Su F 162 ObjectiveE valuation ofC hronic Ankle Instability and Balance Exercise Treatment Department of Biomedical Engineering, National Cheng Kung University Jain T, Wauneka C, Liu W University of Kansas Medical Center 163 A Novel Elastic Loading-Based Exercise Program Improves Both Strength Aand Power at the Ankle Joint 164 Sit to Stand Mechanics AfterS ymmetry Training for Patients After Total a Carey J, Rand T, Myers S Knee Arthroplasty tion | wheelch a ir University of Nebraska at Omaha Abujaber S, Zeni J, Snyder-Mackler L University of Delaware 165 Kinematic Analysis of Gesture in Aphasia Osmanzada H, Ringleb S, Samaan M, Raymer A 166 Scapular and Clavicular Kinematics During Empty and Full Can Exercises Old Dominion University in Subjects with Subacromial Impingement Syndrome Timmons M, Grover M, Lopes-Albers A, Ericksen J, Michener L 167 Priming the Motor System: Passive and Active Movements Induce Department of Veterans Affairs-Hunter Holmes McGuire VA Medical Center Distinct Gabaergic Effects Guri A, Corti M, Patten C 168 Power Training Post-Stroke Engages Neural Circuits at Spinal and University of Florida Supraspinal Levels Corti M, Patten C University of Florida wheelchair biomechanics odd numbers present 5:00 - 6:30 even numbers present 3:30 - 5:00

169 A Reanalysis of Wrist Jerk During Ergonomic Hand Drive Wheelchair Propulsion 170 The Effect ofC rank Position and BackrestI nclination onS houlder Load During Zukowski L, Roper J, Otzel D, Hovis P, Shechtman O, Tillman M Handcycling University of Florida Arnet U, van Drongelen S, Schlussel M, Lay V, van der Woude L, Veeger D Swiss Paraplegic Research 171 Correlation Analysis of Upper Extremity Kinematics for Manual Wheelchair Propulsion 172 Pain During Ergonomic Hand Drive Wheelchair Propulsion Jayaraman C, Hsu I, Moon Y, Hsiao-Wecksler E, Rice I, Beck C, Sosnoff J Hovis P, Zukowski L, Roper J, Otzel D, Shechtman O, Bishop M, Tillman M University of Illinois Urbana Champaign University of Florida 39 poster session 2 | friday, 8:00 - 11:00 am azalea (Friday Thematic Posters)

gait odd numbers present 9:30 - 11:00 even numbers present 8:00 - 9:30

a1 Decreased Gait Transition Speeds in Unilateral, Transtibial Amputee Gait a2 Both Limbs in Unilateral Transtibial Amputees Display Increased Risk for Norman T, Chang Y Tripping Georgia Institute of Technology Wurdeman S, Yentes J, Myers S, Jacobsen A, Stergiou N Nebraska Biomechanics Core Facility A3 Comparison of Kinematic, Kinetic, and Mechanical Work Data Between Traditional and Bone Bridge Amputation Techniques During Fast Walking a4 Upper Body Kinematics of BilateralT ranstibialP rosthesis Users During Gait One Year Post Ambulation Without an Assistive Device Major M, Stine R, Hodgson M, Gard S Kingsbury T, Thesing N, Collins J, Carney J, Wyatt M Northwestern University Prosthetics-Orthotics Center Naval Medical Center, San Diego, CA a6 Ground Reaction Force and Temporal-Spatial Adaptations to Running a5 Net Efficiency of the Combined Ankle-Foot System in Normal Gait: Velocity When Wearing Running-Specific Prostheses Insights for Passive and Active Prosthetics Baum B, Tian A, Schultz M, Hobara H, Linberg A, Wolf E, Shim J Takahashi K, Stanhope S University of Maryland, College Park University of Delaware computational biomechanics odd numbers present 9:30 - 11:00 even numbers present 8:00 - 9:30

C1 Muscle Force EstimatesD uring the Weight-Acceptance Phase of Single-Leg c2 Peak and Nonuniform Fiber Stretch Increase in the Biceps Femoris Long Jump Landing Head Muscle at Faster SprintingS peeds tic posters tic a Morgan K, Donnelly C, Reinbolt J Fiorentino N, Chumanov E, Thelen D, Blemker S University of Tennessee University of Virginia

y them y Comparision of Patella Bone Stress Between Individuals with and Without a c3 c4 The Influence ofI ncreased DOF in the Knee Joint on Muscle Activation Patellofemoral Pain Timings and Forces in a Musculoskeletal Model Ho K, Powers C : frid : Roos P, Jonkers I, Button K, van Deursen R University of Southern Cardiff University

c5 An AdaptiveT abu Search OptimizationA lgorithm for GeneratingF orward

posters 2 posters Dynamics Simulations of Human Movement Vistamehr A, Neptune R Mechanical Engineering Department, The University of Texas, Austin

40 poster session 2 | friday, 8:00 - 11:00 am dogwood

comparative odd numbers present 9:30 - 11:00 even numbers present 8:00 - 9:30

173 A Laboratory Method for Evaluating Dynamic Properties of Equine 174 Breezing Racehorse Limb Kinematics onD ifferentR ace Surface Materials Racetrack Surfaces Symons J, Garcia-Nolen T, Stover S Setterbo J, Chau T, Fyhrie P, Hubbard M, Upadhyaya S, Stover S UCDavis University of California, Davis

175 Hindwing Function inF our-Winged Feathered Dinosaurs Hall J, Habib M, Hone D, Chiappe L Natural History Museum of Los Angeles County/University of Southern California

knee odd numbers present 9:30 - 11:00 even numbers present 8:00 - 9:30

177 Real-Time Biofeedback for ACL Injury Prevention 176 Hop Performance in Individuals with Anterior Cruciate Ligament Injuries Ford K, DiCesare C, Myer G, Hewett T Roos P, Button K, van Deursen R Cincinnati Children’s Hospital Cardiff University

179 The Influence ofU pper Body Stability on Peak Knee Loading During 178 The Correlation Between Internal Skeletal Dimensions of Tibiofemoral posters 2 : comp Sidestepping: Implications forA thlete Screening and ACL Injury Risk Joint and External Body Measurements Edmonds D, Lloyd D, Donnelly C Zou D, Deusinger R, Koleini M, Smith K, Hensley G, Machan T, Vasiljevic D The University of Western Australia Washington University School of Medicine

181 Predicting in Vitro Articular Cartilage Wear in the Patellofemoral Joint 180 Estimating ACL Force from Lower Extremity Kinematics and Kinetics Using Finite Element Modeling

Dai B, Yu B a r Li L, Patil S, Steklov N, Bae W, D’Lima D, Sah R, Fregly B The University of North Carolina at Chapel Hill

Department of Mechanical and Aerospace Engineering, University of Florida tive | knee A Novel ImpactionS ystem to Model CartilageI njury in Living Rabbit Knees Tibiofemoral Joint Articular Surface Motion Gender Differences in 182 183 Diestelmeier B, Tochigi Y, Rudert M, Fredericks D, Arunakul M, Brown T, Subject Specific and Generic Knee Models McKinley T Deusinger R, Zou D, Koleini M, Smith K, Hensley G, Machan T University of Iowa Washington University School of Medicine Latent ProfileA nalysis: Grouping Subjects by Biomechanical Predictors of Correlation Between KT Arthrometer Data and ACL Strain Suggests 184 185 Increased Kam & PotentialR isk for ACL Injury Diagnostic Importance Hewett T, Ford K, Xu Y, Khoury J, Myer G Kiapour A, Quatman C, Wordeman S, Levine J, Ditto R, Paterno M, Goel V, Demetropoulos C, Hewett T The Ohio State University, Cincinnati Children’s Hospital Research Foundation University of Toledo 41 poster session 2 | friday, 8:00 - 11:00 am dogwood knee (continued) odd numbers present 9:30 - 11:00 even numbers present 8:00 - 9:30

187 Single Leg Hop Landing Biomechanics and Association with Symmetry 186 The Effect of Unilateral and Total Menisectomy on Posterior Cruciate Index Following Meniscectomy Ligament Forces Under Femoral Anterior Drawer in Passive Human Knee Hsieh C, Chmielewski T at Full Extension. University of Florida El Sagheir S, Moglo K Royal Military College of Canada

189 Tibial Slope and Knee Flexion Moderate Muscle Induced Strain in the 188 Knee Kinematics andK ineticsD uring Descent of a Navy Ship Ladder Anterior Cruciate Ligament Coulter J, Bawab S, Weinhandl J, Ringleb S Breighner R, Domire Z, Slauterbeck J, Hashemi J Old Dominion University Texas Tech University 190 Effect of Enhanced Eccentric Resistance During the Squat Exercise on 191 Tibiofemoral Cartilage Thickness Following ACL Reconstruction Lower Extremity Stability and Strength Thorhauer E, Tashman S Conrad B, David H, Barone T, Tang S, MacMillan M University of Pittsburgh University of Florida 192 Influence of Sex and Severity on the External Adduction Moment in Medial Compartment Knee Osteoarthritis Morrow M, Kaufman K Mayo Clinic spine pine odd numbers present 9:30 - 11:00 even numbers present 8:00 - 9:30 S

193 In Vivo Three-Dimensional Analysis of the Thoracic Spine in Trunk Rotation 194 The Effect of Thoracic Kyphosis and Sagittal Plane Alignment on Vertebral

: knee | | knee : Fujimori T, Iwasaki M, Ishii T, Kashii M, Murase T, Sugamoto K, Compressive Loading Yoshikawa H Bruno A, Anderson D, D’Agostino J, Bouxsein M Department of Orthopedic Surgery, Osaka University Graduate School of Medicine Harvard-MIT Health Sciences and Technology Program

posters 2 posters 195 Quantification of Multi-Segmental Spine Movement During Gait 196 Disturbances to Intrinsic Stiffness andR eflexiveM uscle Responses Breloff S, Chou L Following Repeated StaticT runk Flexion University of Oregon Muslim K, Hendershot B, Toosizadeh N, Nussbaum M, Bazrgari B, Madigan M Virginia Tech 197 Biomechanical Loading of the Sacrum in Pre- and Post Operative Adolescents Idiopathic Scoliosis 198 Loading Rate During Spinal ManipulationH as Minimal Effect onL umbar Spine Peak ReactionF orce and Spinal Stiffness:A Human Specimen Study Pasha S, Aubin C, Parent S, Labelle H, Mac-Thiong J Xia T, Gudavalli R, Qin Y, Goel V, Ianuzzi-Morris A, Pickar J Ecole polytechnique de Montreal Palmer College of Chiropractic 42 poster session 2 | friday, 8:00 - 11:00 am dogwood

spine (continued) odd numbers present 9:30 - 11:00 even numbers present 8:00 - 9:30

199 Creating Physiologically Realistic Vertebral Fractures 200 Analysis of the Biomechanical Characteristics of the Spinal Interspinous Corbiere N, Lewicki K, Ferrucci L, Issen K, Kuxhaus L Implants Clarkson University Choi D, Kim Y, Kim K University of Kyung Hee 201 AnticipatoryA ctivation of theE rector Spinae and Multifidus inP atients with and Without Low Back Pain 202 Impact of the Loading Type on the Biomechanics of the Cervical Spine Currie S, Myers C, Davidson B, Enebo B Mesfar W, Moglo K University of Denver Royal Military College of Canda hickory

upper extremity odd numbers present 9:30 - 11:00 even numbers present 8:00 - 9:30 posters 2 : spine (con’t) | U pper extremity 203 Musculoskeletal Loading of the Thumb During Pipette Operation 204 Calculating Thumb and Index Finger Postures During Pinch with a Wu J, Sinsel E, Shroyer J, Warren C, Welcome D, Zhao K, An K, Buczek F Minimal Marker Set National Institute for Occupational Safety and Health (NIOSH) Nataraj R, Li Z Cleveland Clinic 205 Contact Stress Analysis of the Radial Head and the Radial Head Implants 206 Removal of Pain from Patients with Shoulder Impingement Results in Kim S, Miller M Alterations inS houlder Muscle Activity & Scapular Kinematics University of Pittsburgh Ettinger L, Shapiro M, Karduna A University of Oregon 207 Handgrip Force and Upper-Limb Kinetics During Handcycling Griswold J, Sasaki K 208 The Effect ofA rm Position onH ill-Sachs Engagement: A Finite Element Study Boise State University Walia P, Miniaci A, Jones M, Fening S Cleveland State University; Cleveland Clinic 209 The Effect ofA rm Position on Bony BankartL esion: A Finite Element Study Walia P, Miniaci A, Jones M, Fening S 210 Assessment of FunctionalR eaching Tasks in Older Adults Cleveland State University; Cleveland Clinic Vidt M, Daly M, Marsh A Wake Forest School of Medicine, Department of Biomedical Engineering 211 Effects ofC orticalS timulation onS ensorimotor Functions of theH and in 212 The Effects ofU pper Extremity Lymphedema on Dominant Limb Healthy Old Adults 3-Dimensional Scapular Kinematics andU pper Extremity Function in Parikh P, Cole K Survivors of Breast Cancer University of Iowa Biggers L, Rundquist P Krannert School of Physical Therapy 43 poster session 2 | friday, 8:00 - 11:00 am hickory upper extremity (continued) odd numbers present 9:30 - 11:00 even numbers present 8:00 - 9:30

213 Development and Verification of an Elbow Stiffness Tester 214 The Medial Ulnar Collateral Ligament Carries No Load During Passive Zeng S, Robinson C, Kuxhaus L Flexion and Extension Clarkson University Muiuki M, Schimoler P, Campbell B, Vaccariello M, Snell E, Akhavan S, DeMeo P, Miller M Allegheny General Hospital 215 Electromyographic and KinematicA nalysis of Medial Reverse Shoulder Arthroplasties During Functional Motions 216 Altered Scapulohumeral Coordination inI ndividuals with Scapular Walker D, Struk A, Wright T, Banks S Dyskinesis University of Florida Spinelli B, Ebaugh D Drexel University 217 Characterization of Coupled Wrist and Forearm Stiffness Drake W, Charles S 218 Kinematic Coupling of Wrist and Forearm Movements Brigham Young University Anderton W, Charles S Brigham Young University 219 Reliability and Precision of the Resistance Zone and Laxity Zone for Effects of Serratus Anterior Muscle Fatigue on Scapular Kinimatics Shoulder Internal and External Rotation 220 Costantini O, Dashottar A, Borstad J Livingston B, Wight J, Wikstrom E, Tillman M The Ohio State University University of North Florida ballroom a running odd numbers present 9:30 - 11:00 even numbers present 8:00 - 9:30

221 Mechanical Demand DistributionD uring Shod and Novice Barefoot Running 222 Biomechanics of Retrospective Navicular Stress Fractures Hashish R, Samarawickrame S, Gaur K, Salem G Becker J, Osternig L, James S, Chou L University of Southern California University of Oregon

223 Plantar Pressure Differences BetweenR earfoot and Midfoot Striking Runners 224 Static Foot Structure and Knee Kinematics During Running Becker J, Howey R, Osternig L, James S, Chou L DiCesare C, Taylor-Haas J, Hickey K, Myer G, Hegedus E, Ford K University of Oregon Cincinnati Children’s Hospital

225 Age Related Changes in Running 226 Trunk Flexion Angle is Associated with Patellofemoral Joint Stress During upper extremity (con’t) | running 2: upper extremity (con’t) posters Freedman Silvernail J, Rohr E, Brueggemann G, Hamill J Overground Running University of Massachusetts Teng H, Powers C University of Southern California 44 poster session 2 | friday, 8:00 - 11:00 am ballroom a

running (continued) odd numbers present 9:30 - 11:00 even numbers present 8:00 - 9:30

227 Predictors of Initial Impact Load and Loading Rates in Runners 228 EMG Activity whileA lter-G Treadmill Running Noehren B, Pohl M Hunter I, Seeley M, Hopkins T, Franson J, Collins M University of Kentucky Brigham Young University

229 Changing Step Width Alters Lower Extremity Kinematics During Running Lower Extremity Joint Moments During the Active Peak Vertical Ground Milner C, Brindle R, Zhang S, Fitzhugh E 230 Reaction Force in Three Different Running Conditions University of Tennessee Standifird T, Johnson W, Hunter I, Ridge S Brigham Young University 231 Accuracy of Self-Reported Footstrike Paterns and Loading Rates Associated with Traditional andM inimalist Running Shoes Ground ReactionF orces During Treadmill Exercise on the International Goss D, Lewek M, Yu B, Gross M 232 Space Station University of North Carolina at Chapel Hill De Witt J, Fincke R, Guilliams M, Ploutz-Snyder L Wyle Science, Technology and Engineering Group/NASA JSC 233 Trunk Endurance Strength and Running Biomechanics After Iliotibial Band Syndrome 234 Effect of Running Classes on Running Kinematics and Economy Foch E, Pfeiffer J, Milner C Craighead D, Lehecka N, King D University of Tennessee Ithaca College posters 2 : running (con’t) 235 Medial Longitudinal Arch CharacteristicsD uring Running 236 Computer SimulationA ssists Gait Retraining Program, a Case Study Forrester S Beltran E, McClain M, Wang H Loughborough University Ball State University

237 Average Ankle Dynamic Joint Stiffness During Heel Strike Running 238 Sagittal Kinematics &K inetics of Midfoot/Forefoot Running After 4 Razzook A, Gleason C, Willy R, Fellin R, Davis I, Stanhope S Weeks of Training University of Delaware Boyer E, Derrick T Iowa State University 239 Differences inR unning and Walking Gait KinematicsD uring Earth and Simulated Mars and Lunar GravitationalE nvironments: Preliminary Investigation 240 Insights into the Footstrike Patterns ofW omen Distance Runners Shapiro R, Cunningham T, Wallace B, Norberg J, Phillips M, Miller M Cavanagh P, Glauberman M, Manner K, Sawyer K, Devasia S University of Kentucky University of Washington

241 Exertion Modulates Ankle Joint Co-Activation During Novel Barefoot and Post-Transition Barefoot Running Conditions Samarawickrame S, Hashish R, Gaur K, Salem G University of Southern California 45 poster session 2 | friday, 8:00 - 11:00 am ballroom a Sports odd numbers present 9:30 - 11:00 even numbers present 8:00 - 9:30

243 The Effect of Load on Movement Coordination During Sled Towing 242 The Effect of Pedal Crank Arm Length on Lower Limb Joint Angles in an Lawrence M, Leib D, Masterson C, Hartigan E Upright Cyling Position University of New England Too D, Williams C The College at Brockport 245 Biomechanical Analysis of Basketball Free Throw Shooting Bradley S, Martin J 244 The Rotational Stiffness of Football Shoes May Affect the Location of a Penn State Potential Ankle Injury Wei F, Meyer E, Braman J, Powell J, Haut R 247 Softball Windmill Pitch: Necessity of a Pitch Count Michigan State University Postlmayr C, Wu T, Ashley J Bridgewater State University 246 Between Landing Kinetic andK inematicD ifferences in aD rop Vertical Jump Bates N, Ford K, Myer G, Hewett T 249 Deceleration:R elationship Between BodyP osition andV elocity University of Cincinnati Havens K, Sigward S University of Southern California 248 Batting Cage Performance of Various Youth Baseball Bats Crisco J, Rainbow M, Wilcox B, Schwartz J 251 The Influence ofF atigue onL anding Mechanics in Youth Male Lacrosse Department of Orthopaedics, Warren Alpert Medical of Brown University and Athletes Rhode Island Hospital Cortes N, Greska E, Bamberg J, Ringleb S, Van Lunen B George Mason University 250 LatissimusD orsi Anthropometry and Swimming Weimar W, Campbell B 253 Influence of Various Heights and Surfaces on Neuromuscular Strategies Auburn University During Drop Landings The Influence of Pedal PlatformH eight on Maximal Average Crank Power Esselman E, Carpenter A, Smith J, Heise G 252 During Pedaling: A Simulation Study University of Northern Colorado Vistamehr A, Neptune R Mechanical Engineering Department, The University of Texas, Austin 255 Rate of Loading and Lower Extremity SagittalP lane Biomechanics When posters 2 : sports posters Landing from a Drop-Jump: Shod and Barefoot Comparisions Between Genders The Examination of Softball Pitching Fatigability in Lower Extremities. Cochrane R, McNeaney B, Lawrence M, Hartigan E 254 Ashley J, Wu T, Postlmayr C University of New England Bridgewater State University

257 Relationships Between Electromyography and Oxygen Consumption in 256 Effects of a 6 Week Intervention Program on Lower Limb Joint Moment Different Work Loads - Rowing Exercise Asymmetry in Healthy Female Collegiate Athletes Hsu H, Hong W, Wang H Spencer R, St Jeanos A, Wynot M, Lawrence M, Hartigan E Department of Sports Medicine University of New England 46 poster session 2 | friday, 8:00 - 11:00 am ballroom a

sports (continued) odd numbers present 9:30 - 11:00 even numbers present 8:00 - 9:30

259 The Effects of Neuromuscular Fatigue on CoordiationV ariation 258 Joint Angles and Joint Moments Following Neuromuscular Fatigue in Samaan M, Cortes N, Hoch M, Ringleb S, Weinhandl J, Greska E, Lucci S, Futsal Players Quammen D, Bawab S Fukuchi R, Fukuchi C, Dinato M, Riani L, Duarte M Old Dominion University University of Calgary

261 Comparison Between Squat Jump vs. Weighted Squat Jump: SimulationS tudy. 260 A Comparison of Volleyball Blocking Techniques: Jumping Velocities and Cimadoro G, Minetti A, Pain M, Van Hoecke J, Alberti G, Babault N, Yeadon M Effective BlockingA reas University of Milan, Department of Sport, Nutrition and Health Science, Milano, ITALY Ficklin T, Schipper M, Lund R University of Northern Iowa 263 Stride Length Compensations and Their Impacts on Brace-Transfer Ground Forces in Baseball Pitchers 262 Using Ankle Bracing Influences the Torque RatioA mong Ankle Stabilizers Crotin R, Ramsey D Muscles After Simulation Basketball Match-Play? University at Buffalo Marques N, Castro A, Milanezi F, Almeida A, Crozara L, Goncalves M Sao Paulo State University 265 Muscle ActivationC hanges Across Three DifferentS kate Skiing Techniques. Mills K, Heil D, Higginson B 264 The Effects ofW hole Body Vibration on theW ingate Test for Anaerobic Gonzaga University Power When Applying Individualized Frequencies

Surowiec R, Wang H, Nagelkirk P, Frame J, Dickin D posters 2 : sports ( 267 Kinematic Analysis of Volleyball Spiking Maneuver Ball State University; Steadman Philippon Research Institute Dunbar N, Chmielewski T, Tillman S, Zheng N, Conrad B University of Florida 266 A Comparison of Knee Moments During a Lateral Cutting Maneuver: Shod vs. Barefoot 269 Effects of Long-Term Use of Ankle Taping on Balance Bisesti B, Cottle C, Lawrence M, Carlson L McGregor S, Johnson S, Pavol M University of New England Oregon State University C

268 Common Control Strategies for GeneratingA ngular Impulse in Forward on’t) and Backward TranslatingT asks Ramos C, Mathiyakom W, McNitt-Gray J University of Southern California

270 Mechanisms Dancers Use to Maintain Balance and Regulate Reaction Forces When Turning Zaferiou A, McNitt-Gray J USC 47 poster session 2 | friday, 8:00 - 11:00 am ballroom a instrumentation odd numbers present 9:30 - 11:00 even numbers present 8:00 - 9:30

271 Comparing Metabolic Costs of Harvesting Biomechanical Energy from 272 Posture and Activity Detection Using a Tri-Axial Accelerometer Human Motion Versus Carrying Batteries for the Same Energy Supply Lugade V, Fortune E, Morrow M, Kaufman K Schertzer E, Riemer R Mayo Clinic Ben-Gurion University 274 Step Counts Using a Tri-Axial Accelerometer During Activity 273 Estimating Peak Achilles Tendon Forces in Youth During Locomotion Fortune E, Lugade V, Morrow M, Kaufman K Using Hip Acceleration Mayo Clinic Neugebauer J, Hawkins D University of California - Davis 276 Validation of aC ommercial Wearable Sensor System for Accurately 275 Robust Optical Sensor for Noninvasive Cardiac Monitoring Measuring Gait on Uneven Terrain Sabick M, Johnson J Rigsby M, Edginton Bigelow K Boise State University University of Dayton

gait odd numbers present 9:30 - 11:00 even numbers present 8:00 - 9:30

277 Concussion Alters Gait Termination Strategies 278 Why Do Humans Walk the Way We Do? Evidence from Dynamic Wikstrom E, Tapia-Lovler T, Munkasy B, Buckley T Simulations UNC Charlotte Miller R tion | g a it a Queen’s University 279 Muscle Activations inR esponse to Achilles Tendon Rupture and Repair Suydam S, Buchanan T, Manal K, Silbernagel K 280 Metabolic Cost and Lower Extremity Muscle Activity During Constant University of Delaware Speed Walking at Different Stride Frequencies Boynton A, Royer T 281 Torso KinematicsD uring Gait Differ BetweenP regnant Fallers and Non-Fallers U.S. Army Research Laboratory/University of Delaware McCrory J, Chambers A, Daftary A, Redfern M West Virginia University 282 Frontal Plane Mechanics Are Altered During Split Belt Treadmill Walking in Young Healthy Adults posters 2 : instrument posters 283 Six-Week Gait Retraining Program for Knee Osteoarthritis Patients: Roper J, Roemmich R, Tillman M, Hass C Learning Retention and Symptom Changes University of Florida Shull P, Silder A, Shultz R, Besier T, Delp S, Cutkosky M Stanford University 284 The Metabolic and Mechanical Costs of Step-Time Asymmetry in Walking Ellis R, Howard K, Kram R University of Colorado at Boulder 48 poster session 2 | friday, 8:00 - 11:00 am ballroom a gait (Continued) odd numbers present 9:30 - 11:00 even numbers present 8:00 - 9:30

285 Comparisons of Flip-Flop, Sandal, Barefoot and Running Shoe in Walking 286 Maintaining a Constant Margin of Stability Across Dyamic Conditions Zhang S, Zhang X, Paquette M May Rely on Different Control Strategies The University of Tennessee, Knoxville Rosenblatt N, Hurt C, Grabiner M University of Illinois at Chicago 287 Maximal Dynamic Stability of Walking Coincides with the Freely Adopted Speed and Stride Frequency 288 Metabolic Cost of Maintaining Balance During a Perturbed Gait Task is Russell D, Haworth J, Martinez-Garza C Related to Gait Variability Old Dominion University McGrath D, Wurdeman S, Yentes J, Hunt N, Myers S, Stergiou N Nebraska Biomechanics Core Facility 289 Differences in Stride Interval Variability During Stair-Climbing and Treadmill Walking Lower Limb Muscle Coactivation in Younger and Older Adults During Renz J, Vallabhajosula S, Hunt N, Chien J, Stergiou N 290 Dual-Task Gait Nebraska Biomechanics Core Facility, University of Nebraska at Omaha, Omaha, NE Hallal C, Ribeiro Marques N, Hebling Spinoso D, Brunt D, Vieira E, Goncalves M 291 SpatiotemporalP arameters of Uphill, Level and Downhill Walking Are Sao Paulo State University Similar Between Treadmill and Overground Surfaces Fellin R, Seay J, Gregorczyk K, Hasselquist L 292 Physiological Cost of Heavy Load Carriage US Army Research Institute of Environmental Medicine Bartlett J, Robusto K Naval Health Research Center 293 Influence of Stepping Rate on Stride Interval Variability of Stair-Climbing posters 2 : g a it (con’t) Vallabhajosula S, Renz J, Chien J, Hunt N, Stergiou N 294 The Effect of Knee Pain and Effusion on Vertical Ground Reaction Force Nebraska Biomechanics Core Facility, University of Nebraska at Omaha, Omaha, NE During Walking Seeley M, Park J, Hunter I, Francom D, Black B, Hopkins J 295 The Effect of Varying Cadences on Shod & Barefoot Gait Kinematics Brigham Young University Romer B, Fox J, Patel J, Rehm J, Weimar W Auburn University 296 Altered Kinematics BetweenF lat and Curved Treadmills Do Not Cause Increased Energy Expenditure 297 Comparison of First and Second Generation Rocker Bottom Shoes Korgan W, Wurdeman S Gardner J, Zhang S, Paquette M, Milner C, Foch E University of Nebraska at Omaha University of Tennessee The Relationship BetweenA mbulatory ActivityP atterns andK inematic 299 A Gender Comparison of Lower Extremiy Ambultory Mechanics in 298 Healthy Subjects with Excessive Varus Alignment Variability Hasenkamp R, Wurdeman S, Myers S Barrios J, Bare D University of Dayton University of Nebraska at Omaha

49 poster session 2 | friday, 8:00 - 11:00 am ballroom a gait (continued) odd numbers present 9:30 - 11:00 even numbers present 8:00 - 9:30

301 Comparison of Tibial Torsion Measurements Using Motion Capture, 300 Effect of Ankle Load on Gait Patterns During Treadmill Walking Physical Therapy Evaluation, and Computed Tomography Wu J, Ajisafe T Nguyen C, Mueske N, Wren T Georgia State University University of Southern California 302 Walking Speed Overground and on a Feedback-Controlled Treadmill 303 Adaptation of Plantarflexor Muscle Activity During Gait Collins J, Sessoms P, Bartlett J Bunchman A, Wellinghoff M, Dean J Naval Health Research Center Medical University of South Carolina 304 Natural Gait May Not Be Neutral: It All Depends on How You Feel 305 Limb Force Variance is Structured to Stabilize the Step-To-Step Kang G, Gross M Transitions of Dynamic Walking University of Michigan, Ann Arbor Toney M, Chang Y Georgia Institute of Technology 306 Gait Initiation Impairments in Essential Tremor and Parkinson’s Disease Fernandez K, Roemmich R, Stegemöller E, Nocera J, Hass C 307 Gender Comparison of Trunk and Pelvis Kinematics During Walking and University of Florida Running Westlake C, Noehren B 308 IdentifyingF allers and Non-Fallers Using Gait Variability Indicators Based University of Kentucky on Methods Proposed for Heart Rate Assessment Zamfolini Hallal C, RIbeiro Marques N, LaRoche D, Ramos Vieira E, 309 Influence ofT ai Chi on KinematicsD uring Multi-DirectionalG ait Initiation Hebling Spinoso D, Fernandes Crozara L, Morcelli M, Goncalves M Vallabhajosula S, Roberts B, Hass C Sao Paulo State University University of Nebraska at Omaha, Omaha, NE 310 Slow Uphill Walking: Better for the Knees of Obese Adults? Haight D, Reynolds M, Board W, Connor T, Browning R 311 Effects of a BiomechanicalE nergy HarvestingA nkle Device on Gait Kinetics Colorado State University Gregory R, Zifchock R, Manuel S, Brechue W U.S. Military Academy 312 Induced Alterations of Interlimb CoordinationC aused by the Use of a Split-Belt Treadmill 313 Evaluation and Classification ofL oad AccomodationS trategies During posters 2 : g a it (con’t) posters Elrod J, Hoover B, Roemmich R, Hass C Walking with Extremity-Carried Weights: A Pilot Study Department of Applied Physiology & Kinesiology, University of Florida Atkins L, Dufek J, James R Texas Tech University Health Science Center

50 poster session 2 | friday, 8:00 - 11:00 am ballroom a prosthetics & orthotics odd numbers present 9:30 - 11:00 even numbers present 8:00 - 9:30

315 The Influence of Wedged Insoles on Knee and Ankle Moments and 314 Kinematic Effects of Biomechanical Energy Harvest at the Ankle: Angular Impulses During Walking. Implications for Injury Susceptibility Fukuchi C, Lewinson R, Worobets J, Stefanyshyn D Leemans A, Zifchock R, Gregory R, Brechue W University of Calgary United States Military Academy

Comparing Visual PerturbationR esponsiveness in Individuals with and 316 Reduced and Asymmetric Trunk StiffnessA mong Unilateral Lower-Limb 317 Amputees During Multi-DirectionalT runk Perturbations Without Trans-Tibial Amputation Hendershot B, Nussbaum M Terry K, Faust K, Wilken J, Dingwell J Virginia Tech University of Texas at Austin 318 Comparison of Powered and Unpowered Prostheses in Patients with 319 A Passive Elastic Exoskeleton Reduces the Metabolic Cost of Walking Transtibial Amputation Walking on a Rock Surface Using Controlled Energy Storage and Release Gates D, Aldridge J, Wilken J Wiggin B, Sawicki G Brooke Army Medical Center Joint Dept. of Biomedical Engineering, North Carolina State University and University of North Carolina 320 TranstibialA mputee Joint MotionH as Larger Lyapunov Exponents Wurdeman S, Myers S, Stergiou N posters 2 : prosthetics & orthotics 321 Metabolic Costs of Locomotion When Walking with and Without Ankle Nebraska Biomechanics Core Facility and Knee Braces 322 Biomechanical Design of Rolling Contact Knee Joint Prostheses Smith J, Kievenaar C, Falgien V, Wilmes J Slocum Jr A, Herder J, Varanasi K University of Northern Colorado MIT 323 More is Not Always Better: Consequences of Exoskeleton Assistance in a 324 The Effect of aN ew Microprocessor Controlled ProstheticK nee on Stair Compliant Muscle-Tendon System Ascent Strategies in Patients withU nilateral Transfemoral Amputation Robertson B, Sawicki G Aldridge J, Wolf E, Scoville C, Wilken J UNC Chapel Hill/NC State Joint Dept of Biomedical Engineering Department of Orthopaedics and Rehabilitation, Center for the Intrepid, Brooke Army Medical Center Muscle Contributions to Whole-Body Angular Momentum During 325 Spring-Mass CharacteristicsD uring Overground Running in Amputees Unilateral Below-Knee Amputee Walking 326 Using Running SpecificP rostheses Silverman A, Neptune R Hobara H, Baum B, Shim J Colorado School of Mines University of Maryland 327 Trip Recovery Strategies in a Unilateral Transfemoral Amputee 328 Weight Bearing Asymmetries and Changes in COP Trajectories: Unilateral Shirota C, Simon A, Kuiken T ERTL Amputees vs Non-Amputees Northwestern University Carpenter A, Smith J, Christiansen C, Heise G University of Northern Colorado 51 poster session 2 | friday, 8:00 - 11:00 am ballroom a prosthetics & orthotics (Continued) odd numbers present 9:30 - 11:00 even numbers present 8:00 - 9:30

329 The Effects of Independent Variations in Rearfoot and Forefoot 330 A Comparison of the Effect ofF oam-Box Casted and Plaster-Casted Orthotics Prosthesis Stiffness on Amputee Gait on the Normal Foot PopulationU sing Bi-Planar X-Ray Fluoroscopy Adamczyk P, Roland M, Hahn M, Sawers A Bushey K, Balsdon M, Dombroski C, Jenkyn T Intelligent Prosthetic Systems, LLC University of Western Ontario

331 An Externally Powered and Controlled Ankle-Foot Prosthesis for Use in 332 Two-Dimensional Parameter Study to Characterize Performance of Push-Off Experiments Ankle-Foot Orthosis Joint Impedance Control Caputo J, Collins S Eicholtz M, Collins S Carnegie Mellon University Carnegie Mellon University

friday, 8:00 - 11:00 am ting poster session 2 | a ballroom a (saturday thematic posters) seating on’t) | se | on’t) C odd numbers present 9:30 - 11:00 even numbers present 8:00 - 9:30

s1 Bicycle Riding, Arterial Compression and Erectile Dysfunction s2 Investigating the Etiology of Vibration-Induced Low Back Pain Parthiban S, Yang C, Jones L, Baftiri A, Niederberger C Craig T, Soltys J, Wilson S rthotics ( rthotics

O University of Illinois at Chicago University of Kansas

s3 Factors Associated with Pressure Ulcers: The Effects of Shear Loads on s4 Tissue Deformation in theS eated ButtocksM odel Blood Flow Sonenblum S, Cathcart J, Winder J, Sprigle S Manorama A, Reid Bush T Georgia Institute of Technology Michigan State University : prosthetics & & prosthetics : s5 Effect of Seat Position Modifications on Upper Extremity Mechanical Loading During Manual Wheelchair Propulsion Requejo P, Mulroy S, Munaretto J, Mendoza Blanco M, Wagner E, posters 2 posters McNittGray J Rancho Los Amigos National Rehabilitation Center 52 poster session 2 | friday, 8:00 - 11:00 am ballroom a (saturday thematic posters) muscle odd numbers present 9:30 - 11:00 even numbers present 8:00 - 9:30 m1 Comparison of Sarcomere Heterogeneity Measured in Passive Live and m2 Pennation Angle Variability in Human Whole Muscle Fixed Muscle Infantolino B, Challis J Sandercock T, Cash A, Tresch M Penn State Berks Northwestern University m4 On the Ascent: The Soleus OperatingL ength is Conserved to the Ascending m3 Posture and ActivationD ependent Variations inS hear Wave Speed in the Limb of the Force-Length Curve Across Gait Mechanics in Humans Gastrocnemius Muscle and Aponeurosis Rubenson J, Neville P, Heok L, Pinniger G, Shannon D Chernak L, DeWall R, Thelen D The University of Western Australia University of Wisconsin-Madison

obesity odd numbers present 9:30 - 11:00 even numbers present 8:00 - 9:30 Biomechanical and Metabolic Implications ofW earing a Powered p1 Magnitude and Time Course of AdaptationD uring Walking with a Passive p2 Exoskeleton to Carry a Backpack Load ElasticE xoskeleton Gregorczyk K, Adams A, O’Donovan M, Schiffman J, Bensel C, Brown M posters 2 : s Charalambous C, Dean J U.S. Army Natick Soldier Research, Development and Engineering Center Medical University of South Carolina p4 Gait Mode RecognitionU sing an InertiaM easurement Unit on a Powered p3 The Effects of Wearing a Spring-Loaded Ankle Exoskeleton on Soleus Ankle-Foot-Orthosis

Muscle Mechanics During Two-Legged Hopping in Humans Li Y, Hsiao-Wecksler E a Farris D, Sawicki G University of Illinois at Urbana-Champaign turd North Carolina State University & UNC-Chapel Hill a y them a p5 Electromyographic Effects of Using a Powered Ankle-Foot Prosthesis Williams M, Grabowski A, Herr H, D’Andrea S

Center for Restorative and Regenerative Medicine, PVAMC tic posters

53 notes 54 Notes Notes notes

55 exhibitor floorplan

exhibitor booth #

Noraxon USA Inc. 1 Simi Reality Motion Systems GmbH 2 AnyBody Technology 3 Delsys Inc. 4 C Motion 5 Vicon 6 Northern Digital 7 Tekscan Inc. 8, 9 Polhemus 10 Kistler Instrument Corporation 11 Novel 12 Xcitex 13 AMTI 14 The Motion Monitor 15 ATI, Industrial Automation 16 Motion Analysis Corporation 18 Qualysis 19 Bertec 20 Metria Innovation Inc 21 ViTRAK Systems Inc 22 Footscan 23 Vision Research, AMETEK 24 ProtoKinetics 25 FDA/CDRH/Office ofD evice 26 Evaluation

56 Inside Back Cover - B & W

university of florida campus map

C

A B

a. Hilton Gainesville / University of florida conference center b. uf cultural plaza (phillips center for the performing arts: reception & keynotes) c. j. wayne reitz union (banquet)

57 Back Cover - Full Color

ASB meeting schedule at a glance wednesday, august 15 thursday, august 16 friday, august 17 saturday, august 18 century a century b century c azalea century a century b century c azalea century a century b century c azalea 7:00 Breakfast 7:00 - 8:00 past pres women in 7:15 b’fast Breakfast 7:00 - 8:00 science Breakfast 7:00 - 8:00 5K (Open seating entire first floor) (albert’s b’fast fun run 7:30 dining (Open seating entire first floor) (florida (Open seating entire first floor) 7:45 welcoming remarks (century a) room) room) 8:00 oral presentations (8:00 - 9:15 am) oral presentations (8:00 - 9:30 am) 8:15 balance tissue bone stroke 8:30 during mechanics (thematic) clinical upper knee 1 seating 8:45 loco- poster session 2 gait extremity symposium motion 9:00 with refreshments (thematic) 9:15 break (8:00 - 11:00 am) and exhibits 9:30 century a, dogwood, hickory break and exhibits 9:45 oral presentations (9:45 - 11:00 am) & azalea 10:00 oral presentations (10:00 - 11:15 am) 10:15 asb fellows imaging: obesity symposium ergonomics knee (thematic) muscle 2: 10:30 gait 2: spine knee 2: imaging 10:45 lab analysis ACL (thematic) 11:00 tour 1 break travel 11:15 and exhibits tribute to david winter, ph.d., p.eng. travel 11:30 (10:30 am - oral presentations (11:30 am - 12:45 pm) (11:15 am - 12:15 pm) (11:30 am - 12:45 pm) 11:45 12:30 pm) pre & post Doc award talks, followed by gait 1: postural journal phillips center for performing arts 12:00 orthopedics century a methods control awards James J. hay memorial award lecture 12:15 (thematic) travel (phillips center for performing arts) 12:30 12:45 lunch travel lunch diversity (Open seating entire first floor) 1:00 tutorial I lunch lunch asb business mtg. 1:15 (challis) (Open seating entire first floor) (florida 12:30 - 2:30 room) (Open seating (open to all - 1:30 oral presentations (1:30 - 3:15 pm) entire first floor) century a) 1:45 travel 2:00 quick aging and muscle 1: amputee oral presentations (2:00 - 3:30 pm) lab keynote lecture: susan harkema, ph.d. motor 2:15 asb exec. research gait modeling & gait (2:00 - 3:00 pm) symposium control behavior (thematic) powered 2:30 tutorial II studies tour 2 computational board phillips center for performing arts falls running exoskeleton 2:45 (fregly) modeling & meeting 2:40 - 3:10 prosthetics 3:00 (2:00 - (magnolia break and exhibits/ (thematic) 3:15 & cedar) 4:00 pm) set up posters break (board and exhibits 3:30 tutorial III ongoing break room) (banks/mu) 3:45 weds. - sat. oral presentations (3:45 - 5:15 pm) closing ceremony & awards 4:00 2:00 - 5:00 3:20 - 4:20 (century a) 4:15 teaching poster session 1 comparative sports computational break 4:30 symposium biomechanics student with refreshments 4:45 speakers (3:30 - 6:30 pm) asb executive board meeting 5:00 exec. board (4:30 - 5:30) century a, dogwood, hickory (Closed meeting - board room) 5:15 exhibitor travel (2-bits & azalea 4:30 - 6:00 pm 5:30 lounge) borelli award lecture: carlo de luca, ph.d. 5:45 (5:30 - 6:30 pm) 6:00 phillips center for performing arts 6:15 opening reception 6:30 (5:45 - 7:45 pm) APTA travel via bus 6:45 florida museum of night networking (florida 7:00 natural history on the room, 6:30 - banquet & 7:30 pm) 7:15 induction of fellows town 7:30 (7:00 - 10:00 pm) 7:45 j. wayne reitz union grand ballroom 8:00