Effects of intermittent hypoxic training on cycling performance in well-trained athletes
Effects of intermittent hypoxic training on cycling performance in well-trained athletes
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DOI：
10.1007/s00421-007-0506-8
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发表时间：
2007-10-01
影响因子：
3
通讯作者：
Millet, Gregoire P.
中科院分区：
文献类型：
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作者：
Roels, Belle;Bentley, David J.;Millet, Gregoire P.
本研究旨在探讨短期间歇低氧训练(IHT)对运动员自行车运动成绩的影响。将19名受试者随机分为常氧组(NT，n=9)和间歇性低氧训练组(IHT，n=10)。完成为期3周的训练计划(5×1小时-1小时30分钟/周)。NT组和IHT组分别在常氧(接近30m)和低氧(模拟海拔3000m)下进行训练。每个受试者在训练前(W0)和训练后(W4)进行三次自行车测试，包括常氧和低氧下的力竭递增试验，以确定最大有氧功率(VO2max)和峰值功率输出(PPO)，以及在常氧(TT)下进行10min的循环时间试验，以测量平均功率输出(P-aver)。两组训练期前后最大摄氧量无明显差异。在常氧状态下测量时，NT组和IHT组的PPO分别显著增加了7.2%和6.6%(P<；0.05)。然而，只有间歇性低氧组在低氧状态下PPO显著改善(11.3%；P<；0.05)。NT组在TT时摊铺机改善了8.1%(P<；0.05)，而IHT组无显著差异。在低氧条件下进行的间歇训练在提高海平面耐力方面的效率低于在常氧条件下进行的类似训练。然而，IHT具有帮助运动员为高原比赛做准备的潜力。
This study aimed to investigate the effects of a short-term period of intermittent hypoxic training (IHT) on cycling performance in athletes. Nineteen participants were randomly assigned to two groups: normoxic (NT, n = 9) and intermittent hypoxic training group ( IHT, n = 10). A 3-week training program ( 5 X 1 h-1 h 30 min per week) was completed. Training sessions were performed in normoxia (similar to 30 m) or hypoxia ( simulated altitude of 3,000 m) for NT and IHT group, respectively. Each subject performed before ( W0) and after (W4) the training program, three cycling tests including an incremental test to exhaustion in normoxia and hypoxia for determination of maximal aerobic power (VO2max) and peak power output (PPO) as well as a 10-min cycle time trial in normoxia ( TT) to measure the average power output (P-aver). No significant difference in VO2max was observed between the two training groups before or after the training period. When measured in normoxia, the PPO significantly increased ( P < 0.05) by 7.2 and 6.6% in NT and IHT groups, respectively. However, only the IHT group significantly improved (11.3%; P < 0.05) PPO when measured in hypoxia. The NT group improved ( P < 0.05) Paver in TT by 8.1%, whereas IHT group did not show any significant difference. Intermittent training performed in hypoxia was less efficient for improving endurance performance at sea level than similar training performed in normoxia. However, IHT has the potential to assist athletes in preparation for competition at altitude.