被动脱水会减少抵抗运动后的肌肉厚度
Casey R Appell1, Nigel C Jiwan1,2, Yasuki Sekiguchi1
1Department of Kinesiology and Sport Management, Texas Tech University, Lubbock, TX, USA.
Journal of sports sciences
|January 27, 2025
概括
在训练有素的男性中,脱水在抵抗运动期间显著影响液体平衡. 虽然脱水会减少总体液体和肌肉厚度,但它可能有助于在运动后保持血体积.
科学领域:
- 运动生理学 运动生理学
- 体育科学 运动科学 运动科学
- 人体生理学 人体生理学
背景情况:
- 脱水显著影响血度,影响全身液体平衡.
- 抵抗运动 (RE) 期间肌肉内的液体变化可能会受到水分状态的影响.
研究的目的:
- 研究脱水对抵抗训练 (RT) 男人的抵抗运动引起的全身液体平衡变化的影响.
主要方法:
- 14名RT男性接受了两次相同的RE疗程:一个在无水状态 (EUHY) 和一个在脱水状态 (DEHY) 中,由24小时的液体限制引起.
- 测量包括总体液体,尿液透度 (Uosmo),尿液特异性重量 (USG),血透度 (Posmo),血红素 (HCT) 和肌肉厚度,从HCT计算出血体积变化 (%ΔPV).
主要成果:
- 脱水条件导致总体体液 (2.6%少) 和肌肉厚度 (13.0%少) 与无水化条件相比显著降低.
- 在整个研究过程中,在脱水状态下,血度,尿液度和尿液特异重量显著更高.
- 与运动前水平相比,抵抗运动5分钟后的血体积减少12.5%,不论水分状态如何.
结论:
- 抵抗运动期间的脱水会改变训练有素的男性的全身液体平衡.
- 脱水期间观察到的较大的水分保留和肌肉内液体流出可能有助于在运动后保持血体积.
- 这些发现突出了水分状态,流体转移和运动表现之间的复杂相互作用.
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