感知脱水会损害活跃男性在炎热的耐力骑行表现
Mark P Funnell1, Jodie Moss1, Daniel R Brown2
1School of Sport, Exercise and Health Sciences, Loughborough University, Leicestershire, LE11 3TU, UK.
Physiology & behavior
|January 12, 2024
概括
感知脱水,即使在体重减少不到2%的情况下,也会损害运动员的耐力表现和口渴感知. 了解水分状态对较低脱水水平的运动能力有重大影响.
科学领域:
- 运动生理学 运动生理学
- 运动科学 运动科学 运动科学
- 人类表现的人类表现.
背景情况:
- 已知脱水超过3%的体重损失会损害耐力表现.
- 感知水分状态对较低脱水水平 (<2%的体重损失) 的表现的影响尚不清楚.
研究的目的:
- 调查水分状态的感知是否会影响活跃男性的耐力表现.
- 为了确定是否感知到水分影响生理反应和表现在运动中的热量.
主要方法:
- 九名活跃的男性在34°C的温度下进行了两次随机试验.
- 参与者完成了间歇性骑自行车运动方案,随后进行了全面的性能测试.
- 参与者被告知他们要么是无水化,要么是脱水 (达到约1.5%的体重损失),以操纵他们对水分状态的感知.
主要成果:
- 没有观察到身体质量损失,心率,胃肠道温度或感知疲劳的评级在感知水解和脱水试验之间存在显著差异.
- 在感知脱水试验中,口渴感知明显高.
- 耐力表现,通过在全力以赴测试中完成的工作来衡量,在感知脱水试验中明显较低 (5.6%).
结论:
- 对水分状态的感知,而不是实际的水分水平,可能会在脱水水平低于2%的体重损失时损害耐力表现.
- 改变一个人对其水分状态的感知,可以影响在高温运动期间的表现和口渴感.
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