The property of gender, body composition, physical fitness level, ACE gene polymorphism on differences of submaximal exercise capacity at various hypobaric hypoxic condition.

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doi:2011.20.1.47

Exerc Sci > Volume 20(1); 2011 > Article

Exercise Science 2011;20(1): 47-60. doi: https://doi.org/10.15857/ksep.2011.20.1.47

성별, 체성분, 체력수준, ACE 유전자 다형성이 다양한 저압·저산소 환경 간 최대하 유산소성 운동능력 차이에 미치는 영향

남상석, 문황운, 박훈영, 선우섭

경희대학교

The property of gender, body composition, physical fitness level, ACE gene polymorphism on differences of submaximal exercise capacity at various hypobaric hypoxic condition.

ABSTRACT

This study was designed to investigate individual specificity on variation of sex, body composition, physical fitness, ACE gene polymorphism, aerobic exercise capacity depend on altitude. Research subject was 219 ordinary volunteers but 47 ordinary volunteers dropped out. Consequently, 172 ordinary volunteers’data analyzed. Before measurement, body composition test and ACE gene polymorphism test through blood sample carried out, measurement carried out from sea-level to 5,000m in 1,000m unit created hypobaric hypoxia chamber at 3 day intervals. After the subject take a rest in each hypobaric hypoxia environment at 30min, measured %SpO2 and PWC75%HRmax through bike ergometer. As a result, sub-maximal aerobic exercise capacity correspond to 75%HRmax was significant decrease from 2,000 m, as 1,000 m altitude increase, sub-maximal aerobic exercise capacity decreased exponentially. Also, decrease of sub-maximal aerobic exercise capacity followed increase of altitude increased as high physical fitness level. Men's decreasing ratio bigger than women's decreasing ratio but relative value(decreasing ration/FFM) didn't different men and women. But rest %SpO2 more decreased(p<.05) in women than men in simulated 5,000 m, this phenomenon because to ventilation, oxygen affinity in blood, PO2 effected on %SpO2 in blood, and this factors induced sex difference in extremely altitude. Also, sub-maximal aerobic exercise capacity in one-off exercise at simulated high altitude environment didn't difference between ACE gene polymorphism.

Key words: different of hypobaric hypoxic condition, submaximal exercise capacity, gender, body composition, physical fitness level, ACE gene