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The Effectiveness of the Po2 Aerobic Exerciser in Simulating High Altitude Training at Sea Level in Cross Country Runners

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The Effectiveness of the Po2 Aerobic Exerciser in Simulating High Altitude Training at Sea Level in Cross Country Runners AN ABSTRACT OF THE THESIS OF Gar/ K. Sievers for the degree of Master of Science in Education presented on February 12, 1986. Title: The Effectiveness of the Po Aerobic Exerciser in 2 Simulating. HighAltitudeTraining._ at SeaLevel in Cross Country. Runners. Redacted for Privacy Abstract approved: y. J. V. D'hea Purpose: The purpose of this study was to determine the effectiveness,if any,of the Po2 Aerobic Exerciser in simulating high altitude training in cross country runners living at sea level. Procedures: This study was conducted during the 1982 winter term at Oregon State University. Four cross country runners of the Oregon State University varsity team volunteered to serve as subjects. For the eight-week test period the subjects were randomly divided into an experimental group and control group. During all long distance training runs, the experimental group wore the Po2 Aerobic Exerciser. During the eight-week test period, both groups followed identical progressive overload training programs. Monday through Friday morning each subject ran 5 milesat a 6:00to 6:15 pace. On Monday, Wednesday, and Friday afternoons,theyran 7 miles at 5:30 pace.Sunday Friday afternoons,theyran 7 milesat 5:30pace. Sunday calledfor a 12 to 15-milerun at a 6:00 to 6:15pace. Tuesday, Thursday, and Saturday afternoon, all subjects participated in an anaerobic (interval) workout. Testing was done on a preand post research design. Physiological testswere: theBalke submaximaltreadmill test to measure changesin Vol max, and a blood chemistry test for possible changesin red blood cell and hemoglobin count which would reflect the oxygen carrying capacity of the blood. Analysis of Data: The collected data were analyzed by means of the t-test and percent differential. A significant level of .10 for rejection or acceptance of the null hypothesis was selected. Conclusions: From the statisticalevaluation of the results, the following conclusion may be made. No statisticallysignificantdifferenceexisted between the two groups after completionof the test period on either the treadmill test or the blood chemistry analysis. THE EFFECTIVENESS OF THE Pot AEROBIC EXERCISER IN SIMULATING HIGH ALTITUDE TRAINING AT SEA LEVEL IN CROSS COUNTRY RUNNERS by Gary K. Sievers A THESIS submitted to Oregon State University in partial fulfillment of the requirements for the degree of Master of Science Completed February 12, 1986 Commencement June 1986 APPROVED: Redacted for Privacy Professor ofriysical Edutation in charge of major Redacted for Privacy Chairman ofer'sical Education Department Redacted for Privacy C"-Deanof the School oprducafiEn- Redacted for Privacy Dean of Gradu to SchooT(I Date thesis is presented February 12, 1986 Typed by Judith Sessions for Gary K. Sievers ACKNOWLEDGEMENTS My sincere gratitude to Dr. J. P. O'Shea my major advisor, whose guidance and never-ending patience madethis study a reality. A special thanks to Frank Morris, former OregonState University Track Coach, whose trust inmy ability brought me to OSU asa student and coach. To the OSU varsity cross country team, I give a big thank you. Withoutyour daily participation and under- standing, this study would have never been possible. To my parents Robert and JoAnn, I dedicate this study. Your love, patience and endless faith has madeevE ything that has come to me possible. Thank you. TABLE OF CONTENTS Page I. INTRODUCTION 1 Purpose of the Study 3 Hypothesis 4 Limitations 4 Delimitations 4 Basic Assumptions 5 Definition of Terms 5 II. REVIEW OF RELATED LITERATURE 8 Altitude and Athletic Performance 8 Altitude Physiology 9 Oxygen Transport 9 Ventilation 9 Blood Oxygenation 14 Cardiac Output 15 Oxygen Dissociation 16 Lung Diffusing Capacity 17 Increased Vascularity 18 Oxygen Uptake and Altitude 19 Altitude: Metabolic Rate and Respiration 23 Racial Variability 26 Age and Sex Differences 28 III. METHODOLOGY 29 Subjects 29 Testing Equipment and Instrumentation 30 Training Procedures 33 Testing Procedures 34 Statistical Analysis of Data 38 IV. ANALYSIS AND DISCUSSION OF DATA 39 Statistical Treatment 39 Presentation of Findings 40 Pre-Post End Time Treadmill Results 41 Blood Chemistry Analysis 41 Disscussion of the Findings 44 Blood Chemistry Analysis 45 V. SUMMARY, CONCLUSION, AND RECOMMENDATIONS 48 Summary 48 Conclusion 49 Recommendations 50 VI. BIBLIOGRAPHY 51 VII. APPENDICES 54 Appendix A 55 Appendix B 56 Appendix C 60 LIST OF FIGURES Figure Page 2.1 Oxygen Dissociation Curve 17 3.1 Po Aerobic Exerciser 2 31 3.2 Quinton Treadmill 31 3.3 Quinton Cardiotachometer 32 3.4 Quinton Electrocardiograph Recorder 32 3.5 Balke Protocol Diagram 36 LIST OF TABLES Table Page 3.1 Physical Characteristics of Subjects 29 4.1 Statistical Treatment (means, standard deviation, and range) 40 4.2 End Time Treadmill Test Results 41 4.3 Red Blood Cell Test Results 42 4.4 Hemoglobin Test Results 42 4.5 Percentage Differential Treatment 43 LIST OF CHARTS Chart Page A Olympic 3,000m Steeplechase 1952-84 10 B Olympic 5,000m Run 1952-84 11 C Olympic 10,000m Run 1952-84 12 D Olympic Marathon 1952-84 13 THE EFFECTIVENESS OF THE Po AEROBIC 2 EXERCISER IN SIMULATING HIGH ALTITUDE TRAINING AT SEA LEVEL IN CROSS COUNTRY RUNNERS I. INTRODUCTION Attempts to delineate theinfluence of high altitude residence on the working capacity and performance of mankind have been relatively inadequate. This is because the facts which determine man's performance have not been identified and understood, even under the optimal conditions atsea level.A complex number of physiological factors varying from respiratory and cardiovascular to tissue components areinvolvedin determining the ability of manto perform work. Additional conditions making the analysis difficult are type and duration of exercise, ambient temperature, age, sex, initial state of physical condition, nutritionalstate, degree of activity while at altitude, and the level of altitude acclimatization attained by the subject. Further, complications in analysis of published data relate to the wide variation in individual response to the combined stresses of low ambient oxygen pressure andlevel of work. It is also apparent that certain cultural and behavioral conditions modify the responses reported. Before and since theMexicoCityOlympics of 1968, much attention has been focused on the benefits and effects 2 of altitude training on those athletes who lived and trained at lower altitudes. Because of this,a great amount of research has been done on altitudetraining and its effect on altitude and sea level performance. The results of this vast researchon altitude training has produced a multitude of conflicting data. Onegroup (Balke, Faulkner, & Daniels, 1966; Klausen, Dill, & Horvath, 1970; Dill & Adams, 1971) reports that an improvement in the functional aerobic capacity of an athlete at sea levelwill occur as a resultof altitude training. The second group (Grover & Reeves, 1967;Hansen & Vogel, 1967;Salton, Grover,& Blomquist,1968) reports that altitude will not improve the functional aerobic capacity of an athlete at sea level. With the results of the first group in mind,stating that altitude training does increase the functional aerobic capacity of an athlete at sea level, InspirAir Corporation designed and marketed the Po2 Aerobic Exerciser. This device, when at sea level, simulates running at 7,500 feet altitude. The designer claims that an athlete can live and train atsea level doing the necessary anaerobic work one day at sea level, while simulating 7,500 feet altitude aerobic training in the same location on the other days. There is only one published research atthis time on the Po 2 Aerobic Exerciser. This research gives only a brief functional explanation of e Exerciser. This study 3 (Wischnia, 1981)was performedutilizing members ofthe University of Oregon varsity track team in1981. After a ten-week training period using the Po2 AerobicExerciser, they reported an increase of 3.0% in thered blood cell count and 4.2% increase inthe hemoglobin count. However, there isno supporting data indicating that arise in the red blood cell or hemoglobin count following altitude training willproduce improved running performance atsea level. Although altitude training improves performance at altitude,there appears tobe little supporting evidence that altitude training improvessea level performance. In fact, training at altitude for the elite athleteinitially may have a detrimental effect on the sea level performance, due to the lower intensity of the trainingprogram brought about by the decreased partial pressure of oxygen associated with high altitude. Purpose of the Study The purpose of this study was to determine the physiological effectiveness, if any, of an eight-week experimental training program using the Po Aerobic 2 Exerciser on increasing sea level aerobic capacity of college cross country runners. 4 Hypothesis The hypothesis tested was that eight weeks of training using the Po2Aerobic Exerciser would not result in any improvements in the functional sealevelaerobic capacity of the subjects. Limitations The major limitations of the study were: 1. Only male college-age varsity runners from Oregon State University were used as subjects. 2. The use ofa sub-maximal aerobic treadmill test, a restriction place onthestudy by the Oregon State University Human Subjects Committee. 3. The study involved only one training method, long-distance running. Delimitations The scope ofthe study waslimited by the following factors: 1. The subjects were four male college varsity runners. 2. One experimental and one control group were utilized in the study. 3. The running training regime was an endurance program. 5 4. The lengthof the experimental periodwas eight weeks, during which time blood tests and aerobic capacity tests were administered. The subjects trained 7 days a week. 5. Aerobic capacity was assessedusing the Balke Treadmill test protocol. Basic Assumptions The following assumptions were made for thestudy. 1. The Po Aerobic Exerciser 2 simulated7,500 feet altitude as indicated by the manufacturer. 2. The subjects performed maximally in their training programs. Definition of Terms Terms frequently used throughout this study are defined as follows: ACCLIMATIZATION.
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