夜间氧气丰富对高海拔适应的影响
Alejandro M Rosales1, Walter S Hailes1, Christopher W Collins2
1School of Integrative Physiology and Athletic Training, Montana Center for Work Physiology and Exercise Metabolism, University of Montana, Missoula, Montana, United States.
概括
夜间氧气丰富可以改善高海拔地区的睡眠质量,但不会妨碍短期适应. 这项研究发现,在睡眠期间补充氧气可以增强休息,而不会对对高度暴露的生理适应产生负面影响.
科学领域:
- 高海拔的生理学 高海拔的生理学
- 睡眠科学 睡眠科学
- 运动生理学 运动生理学
背景情况:
- 高空暴露给睡眠和生理适应带来了挑战.
- 众所周知,夜间氧气丰富可以改善海拔地区的睡眠质量.
- 由于低氧刺激减少,对适应的潜在负面影响尚不清楚.
研究的目的:
- 为了研究夜间氧气丰富对2800米高的短期适应的影响.
- 为了确定睡眠期间补充氧气是否会损害日常高空暴露期间的生理适应.
- 为了评估在7天的协议期间对睡眠质量和生理标记的影响.
主要方法:
- 在2800米处进行了一项为期7天的研究,参与者与 (32.3% O2) 或没有 (20.8% O2) 补充氧气一起睡觉.
- 每天进行5分钟的自行车测试和从2800米到4200米的徒步旅行.
- 测量包括睡眠时间,动脉氧和度,肌肉氧化,心率和呼吸气体.
主要成果:
- 使用夜间氧气丰富剂的参与者睡眠时间更长,夜间氧气和度更高.
- 在休息或骑自行车引起的肌肉氧化,动脉氧和,心率或呼吸交换比率变化方面,没有观察到群体之间的显著差异.
- 两组都表现出适应,证据是7日骑自行车时动脉氧和度改善.
结论:
- 夜间氧气丰富可以有效地改善高海拔地区的睡眠.
- 睡眠期间补充氧气不会妨碍短期适应到2800米.
- 每日高空运动,即使是夜间氧气,也促进了必要的生理调整.
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