The Effects of Elevated Shoe Heights on Static and Dynamic Balance in Healthy Younger Women" (2001)
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University of North Dakota UND Scholarly Commons Physical Therapy Scholarly Projects Department of Physical Therapy 2001 The ffecE ts of Elevated Shoe Heights on Static and Dynamic Balance in Healthy Younger Women Rhett L. Randall University of North Dakota Follow this and additional works at: https://commons.und.edu/pt-grad Part of the Physical Therapy Commons Recommended Citation Randall, Rhett L., "The Effects of Elevated Shoe Heights on Static and Dynamic Balance in Healthy Younger Women" (2001). Physical Therapy Scholarly Projects. 362. https://commons.und.edu/pt-grad/362 This Scholarly Project is brought to you for free and open access by the Department of Physical Therapy at UND Scholarly Commons. It has been accepted for inclusion in Physical Therapy Scholarly Projects by an authorized administrator of UND Scholarly Commons. For more information, please contact [email protected]. THE EFFECTS OF ELEVATED SHOE HEIGHTS ON STATIC AND DYNAMIC BALANCE IN HEALTHY YOUNGER WOMEN by Rhett L. Randall Bachelor of Science in Physical Therapy University of North Dakota, 2000 Bachelor of Science in Exercise and Sport Science Oregon State University, 1998 An Independent Study Submitted to the Graduate Faculty of the Department of Physical Therapy School of Medicine University of North Dakota in partial fulfillment of the requirements for the degree of Master of Physical Therapy Grand Forks, North Dakota May 2001 This Independent Study, submitted by Rhett L. Randall in partial fulfillment of the requirements for the Degree of Master of Physical Therapy from the University of North Dakota, has been read by the Faculty Preceptor, Advisor, and Chairperson of Physical Therapy under whom the work has been done and is hereby approved. (Faculty Preceptor) ~~tk (Chairperson, Physical Therapy) 11 PERMISSION Title The Effects of Elevated Shoe Heights on Static and Dynamic Balance in Healthy Younger Women Department Physical Therapy Degree Master of Physical Therapy In presenting this Independent Study Report in partial fulfillment of the requirements for a graduate degree from the University of North Dakota, I agree that the Department of Physical Therapy shall make it freely available for inspection. I further agree that permission for extensive copying for scholarly purposes may be granted by the professor who supervised my work or, in her absence, by the Chairperson of the department. It is understood that any copying or publication or other use of this independent study or part thereof for financial gain shall not be allowed without my written permission. It is also understood that due recognition shall be given to me and the University of North Dakota in any scholarly use which may be made of any material in my Independent Study Report. Signature -"F~"-"'-==-"""==------ Date -~~/~~/~~~-----I 'J.. / /:).. 100 111 TABLE OF CONTENTS LIST OF TABLES ............. .. ..... ...... ...................... ............................................................ vii LIST OF FIGURES ......................................................................................................... viii ACKNOWLEDGEMENTS .. ... ............ ........... ............. .............................. ................ .. ... .. ix ABSTRACT ........................................................................................................................ x CHAPTER I INTRODUCTION ........................................................................................ 1 Purpose .............................. ............ .... ............................................... 3 Clinical Application .................. .. ....... .. .............................. .......... .. .. 4 II REVIEW OF THE LITERATURE ............................................ .......... .... ... .5 Research Studies ....... ... .. ..................... ... ......... ................................. 6 Postural Control ....................... ....................... .. .. .......... .. ................. 9 Balance Measures .. ......... .. .. ........................................................... 11 Reliability Studies ... ... ........................................ ................. .. ......... 11 III METHODOLOGY ................. ...... .. ........................................................... 14 Subjects ........ .. ................................ ........ .... ............. ...... .. ............ ... 14 Instrumentation ..................................................... ............ .. ........... 15 Limits of Stability Test ...................................................... 17 Bilateral Stance Test .......................................................... 18 Functional Reach Test.. ..................................... .. ............... 19 IV Assessment Procedure ................................................................... 19 Limits of Stability Test ...................................................... 20 Bilateral Stance Test .......................................................... 22 Functional Reach Test. ..................... .............................. .. .. 23 Pilot Study .... .. ............................................................... ................. 24 Intrarater Reliability ........................................................... 24 ICC and r-value Interpretation .................... ....................... 25 Data Analysis ... ... .............................. ............ .................... .. ...........26 Reporting of Results .............................................................. ........27 N RESULTS ........................................................................... ........................ 28 SUbject Profile ....................... ......................................................... 28 Descriptive Statistics .... .................................................................. 28 Analytical Statistics .................................................. ..................... 28 V DISCUSSION ........................................................... ........... ..................... .36 Limitations ... ........................................................... ...................... .39 Recommendations ......................................................................... .42 Conclusion ............................................... ...................... ............... .43 APPENDICES A Institutional Review Board Research Project Action Report ..... ............... .46 B Consent Form .... .. ..... .. ... .. ........................................................................... 52 v C Health Background Questionnaire .... ...... ................................................... 55 D Computer Results Example ................................................................ ........ 58 E Examples of Elevated Shoes .................. ................................................... 63 F NeuroCom® Balance Master Verbal Instructions ...................................... 67 G Functional Reach Test Instructions ........................................................... 69 REFERENCES ......... .. .. .... ..................................................................................... .. .......... 70 VI LIST OF TABLES Table Page I. Bilateral Stance Test Intrarater Reliability Using ICC and r-value .................... .... 25 2. Limits of Stability Test Intrarater Reliability Using ICC and r-value ... ... .............. 25 3. Functional Reach Test Intrarater Reliability Using ICC and r-value ........ .. ...........25 4. ICC Value Interpretation .. .................... ....... ...... ...... ... ...... ..... .... .. ........... ..... ... ....... .. 26 5. Correlation Coefficient r-value Interpretation ........ .. ..... ....... ............. ....... .............. 26 6. NBM® Tests and FRT Descriptives ................ .... ....... ...... .......... .... .... ..... ..... ......... ..29 7. Wilcoxon and Paired t test Descriptives .... ................. ............ ... .. ..... .............. ........ 31 8. Relationship of Shoe Conditions to Performance on LOS Test, Bilateral Stance Test, and FRT Using Pearson's Correlation Coefficient... ........... ... .... ........ 33 9. Relationship of Shoe Conditions to Performance on LOS Test, Bilateral Stance Test and FRT Using Spearman's Correlation Coefficient ... ...................... .34 Vll LIST OF FIGURES Figure Page I. NeuroCom® Balance Master .......................................... ............. .................. .......... 16 2. Elevated shoe measurements taken in centimeters ........... .. .................................... 20 3. NBM® foot placement used ................................................................. ................... 21 4. Eight directions of limits of stability ................................................. ..................... 22 5. Scatterplot ofFRT scores and maximal excursion forward on NBM® .................. 35 Vlll ACKNOWLEDGEMENTS I would like to express my gratitude to the faculty of the University of North Dakota Department of Physical Therapy, particularly Meridee Danks for donating numerous hours of her time and providing wonderful guidance. I would also like to thank Renee Mabey for her assistance with the statistical analysis. Thanks should be given to all the members of the 2001 Physical Therapy class, whom I have grown to know as a family over the last three years. Thank you for your support and humor. I would also like to acknowledge thanks to my research partner and good friend