水温对水中运动期间大脑血流的影响
Howard H Carter1, Oliver Pienaar1, Alexander Coleman1
1School of Sport Science, Exercise and Health, The University of Western Australia, Crawley, WA, 6009, Canada.
在运动周期中,较热的水 (38°C) 与较冷的水 (32°C) 或陆地运动相比,减轻了脑血流 (CBF) 速度的增加. 水温显著影响水中运动对脑血管的益处.
科学领域:
- 生理学 生理学 生理学
- 运动科学 运动科学
- 神经血管功能 神经血管功能
背景情况:
- 运动训练有助于增强大脑健康,可能是通过增加大脑血流 (CBF).
- 在运动期间浸泡在水中可以增加CBF,但水温的影响尚不清楚.
- 优化水温可以在水上运动期间最大限度地提高CBF的益处.
研究的目的:
- 为了研究水温对CBF在循环人体测量过程中的影响.
- 为了比较CBF在陆地运动中的反应与在32°C和38°C的水中浸泡.
主要方法:
- 11名健康参与者完成了30分钟的阻力匹配循环炼.
- 运动是在三个条件下进行的:陆地,32°C水浸和38°C水浸.
- 记录了中脑动脉速度 (MCAv),血压和呼吸系统的测量.
主要成果:
- 与32°C相比,38°C的水中核心体温显著增加,而32°C的水则显著增加.
- 在38°C的运动中,平均动脉压低于在陆地或32°C的浸泡中.
- 与陆地和38°C运动相比,MCAv在32°C浸泡期间显著更高.
结论:
- 浸泡在温暖的水中 (38°C) 可以减轻骑行过程中CBF速度的增加.
- 这种减弱可能是由于血液流量重新分配用于温度调节.
- 水温是影响水中运动对脑血管的益处的关键因素.
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