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해수면과 급성 저산소 상태에서의 무산소성 파워 및 혈중젖산농도에 관한 연구
윤성진(Sung Jin Yoon),이중철(Joong Chul Lee),변용현(Yong Hyun Byun),유지민(Jee Min You) 한국사회체육학회 2005 한국사회체육학회지 Vol.0 No.23
The purpose of this study was to determine the difference of acute exposure hypoxia and normoxia on anaerobic power and blood lactate concentration. 10 male subjects(age : 19.80±1.22 yrs ; weight : 71.96±6.63 kg ; height : 177.14±5.28 cm) performed two types of exercises classified as the hypoxia(percental composition one liter-og air(14.5% 0₂)) and normoxia(20.9% O₂). Anaerobic power variable during exercise was obtained using cycle ergometer. Anaerobic power was calculated by tenth time 5-s force-velocity and 40-s maximal cycle exercise performance at hypoxia and normoxia. Furthermore, lactate concentration were obtained through blood sampling. The conclusion derived from statistical analysis were as follow : There was no significant difference in anaerobic power between hypoxia and normoxia exercise. No significant difference was found between hypoxia and normoxia exercise in peak rpm and tenth time force-velocity, while there was a significant difference in 40-s maximal cycle exercise performance(p<.05). The blood lactate concentration showed no significant difference between hypoxia and normoxia exercise in resting, 5-s force-velocity and 40-s maximal cycle exercise performance. In conclusion, this study shows that anaerobic performance may be not altered at the altitude of 3,000m(14.5% 0₂).