Effect of intermittent hypoxia on oxygen uptake during submaximal exercise in endurance athletes
Effect of intermittent hypoxia on oxygen uptake during submaximal exercise in endurance athletes
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DOI：
10.1007/s00421-004-1054-0
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发表时间：
2004-06-01
影响因子：
3
通讯作者：
Miyamura, M
中科院分区：
文献类型：
--
作者：
Katayama, K;Sato, K;Miyamura, M
本研究的目的是澄清以下问题：（1）在训练的运动员休息状态下，短期间歇性缺氧后，运动期间的稳态摄氧量（（V）相对于dotO（2））是否会降低;（2）在次极量运动期间，（V）相对于dotO（2）的变化是否与间歇性缺氧后耐力表现的变化相关。15名受过训练的男性耐力跑步者自愿参加这项研究。每名受试者被分配到缺氧组（n=8）或对照组（n=7）。低氧组在常压低氧[12.3（0.2）%吸入氧]下连续14天，每天3 h。在间歇性常压缺氧前后进行最大和次最大运动试验、3,000米计时试验和海平面静息血液学评估。在整个实验过程中，两组运动员继续在常氧条件下进行正常训练。（V）低氧组亚极量运动时过dotO（2）显著降低（P
The purpose of the present study was to clarify the following: (1) whether steady state oxygen uptake ((V)over dotO(2)) during exercise decreases after short-term intermittent hypoxia during a resting state in trained athletes and (2) whether the change in (V)over dotO(2) during submaximal exercise is correlated to the change in endurance performance after intermittent hypoxia. Fifteen trained male endurance runners volunteered to participate in this study. Each subject was assigned to either a hypoxic group (n=8) or a control group (n=7). The hypoxic group spent 3 h per day for 14 consecutive days in normobaric hypoxia [12.3 (0.2)% inspired oxygen]. The maximal and submaximal exercise tests, a 3,000-m time trial, and resting hematology assessments at sea level were conducted before and after intermittent normobaric hypoxia. The athletes in both groups continued their normal training in normoxia throughout the experiment. (V)over dotO(2) during submaximal exercise in the hypoxic group decreased significantly (P