急性normobaric缺氧和寒冷对亚最大和最大耐力运动的独立,添加和相互作用的影响
A Callovini1,2, A Fornasiero3,4, A Savoldelli3,5
1CeRiSM, Sport Mountain and Health Research Centre, University of Verona, Rovereto, Italy. alexa.callovini@univr.it.
European journal of applied physiology
|November 14, 2023
概括
结合感冒和缺氧显著影响耐力运动. 性能和生理反应被添加或协同影响,为极端环境适应提供了新的见解.
科学领域:
- 环境生理学环境生理学
- 运动生理学 运动生理学
- 人类的适应能力
背景情况:
- 极端环境对人类生理调节构成重大挑战.
- 了解感冒和缺氧的联合影响对于优化在这种条件下的性能和安全至关重要.
研究的目的:
- 研究寒冷 (-20°C) 和低氧 (13.5% FiO2) 在耐力运动期间对生理和感知反应的独立和联合影响.
- 确定这些环境压力因素是否对运动表现和相关的生理标志物产生添加或协同影响.
主要方法:
- 14名训练有素的男性受试者完成了最大的增量跑步机测试,直到疲.
- 测试了四种环境条件:正常热-正常氧,正常热-低氧,寒冷-正常氧和寒冷-低氧.
- 评估性能指标,生理反应 (心率,通风,乳酸) 和感知反应 (RPE,TSmax).
主要成果:
- 最大的工作量和乳酸值因感冒和缺氧而降低,在组合时具有添加效应.
- 心率和最大通风率在结合感冒-低氧的治疗中呈现增量减少.
- 乳酸值的通风表现出一种互动效应,在联合压力下显著下降.
- 在乳酸值的感知劳动的评分仅仅因缺氧而降低,而最大的热感受到两种压力因素的协同降低.
结论:
- 寒冷和缺氧的联合暴露会对运动表现和生理和感知反应产生添加或协同效应,超过单个压力因素的影响.
- 这些发现为人类对环境挑战的生理反应提供了关键的见解.
- 这项研究强调了寒冷和低氧在艰苦的体力活动期间的复杂相互作用.
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