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KMID : 0359419960140010119
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Korean Journal of Sports Medicine
1996 Volume.14 No. 1 p.119 ~ p.128
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A Study on Changes of Exercise Performance and Blood Component During Graded Exercise at a Simulated of Altitude 14,000ft
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김성수
백용주/김명기/김영표/오봉석/신말순/변재종/이동희
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Abstract
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The purpose of this study is to analyze the effects of acute hypobaric on exercise performance and blood lactate concentration. Seven healthy young volunteers recruited to perform exhaustive graded exercise at a ground level of 258ft and at a
simulated
altitude of 14,000ft by turns. Each experiment was separated by 11 days. Heart rate, blood lactate concintration, OBLA, and the time spent on Performance were observed.
@ES The results are as follows;
@EN 1. Rest heart rate in acute hypoxia was significantly higher than in normoxia. However, maximal heart rate in acute hypoxia indicated no significant difference.
2. There were significant differences in heart rate between altitudes.
3. OBLA in hypoxia was significantly faster than in normoxia.
4. The time spent on performance decreased significantly in hypoxia.
In summary, rest heart rate increased in hypoxia due to decreased partial pressure of oxygen. But increased anaerobic metabolism by maximal graded exercise in hypoxia reduced time spent on performance and OBLA.
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