运动诱导的低水解会影响在温带条件下3公里跑步机跑步的表现
Mark P Funnell1, Daniel Embleton1, Thomas Morris1
1National Centre for Sport and Exercise Medicine, Loughborough University, Loughborough, Leicestershire, UK.
Journal of sports sciences
|September 21, 2023
概括
运动诱导的低水会显著损害跑步的表现,即使在温和的条件下. 由于脱水导致的~2%的体重损失使3公里计时赛的表现减慢了~6%.
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
- 环境生理学环境生理学
背景情况:
- 在温带气候下,对运动诱导的低水分和跑步表现的研究是有限的.
- 由于跑步中脱水而减肥的潜在益处尚不清楚.
- 了解水分对耐力表现的影响对于运动员来说至关重要.
研究的目的:
- 为了研究运动诱导的低水分对3公里跑步时间试验表现的影响.
- 在温和环境中量化与低水相关的性能下降.
- 为了在最小的液体摄入条件下比较性能,而不是水解.
主要方法:
- 十七名间歇性游戏玩家进行了试验,涉及在65%的VO2峰值下运行,以诱导低水化 (HYP) 或高水化 (EUH).
- 通过最少的液体摄入 (60mL) 实现了低水分,而EUH的目标是取代95%的汗水损失.
- 通过3公里计时测试来评估性能,遵循预加载炼协议.
主要成果:
- 低水导致大约2.2%的体重损失,而低水导致0.5%.
- 观察到缺水的生理标志物 (血清度增加,心率,口渴,血体积减少).
- 在低水化状态下,3公里计时赛的表现显著减慢了~6%.
结论:
- 运动引起的缺水,即使是约2%的体重损失,也会在温带条件下对3公里的跑步性能产生负面影响.
- 低水分对跑步表现的有害影响超过了与此相关的减肥的潜在益处.
- 在温带环境中炼时保持水分是最佳跑步表现的关键.
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