准备性低水化对休运动员心脏负担的影响
Antonia Kellnar1, Stefan Brunner1, Anna Strüven1
1Department of Medicine I, University Hospital Munich, Ludwig Maximilians University, Munich, Germany.
Physiology international
|May 15, 2024
概括
低水会降低运动员的运动能力,因为它会降低心脏输出,而不是增加心脏压力标志物. 对临床群体需要进一步的研究.
科学领域:
- 运动生理学 运动生理学
- 心脏病学 心脏病学
- 环境健康 环境健康
背景情况:
- 全球气温上升对器官系统构成风险,缺水是关键因素.
- 虽然低水分对运动表现的影响是众所周知的,但其对心脏的影响不太清楚.
- 这项研究调查了运动员在低水分期间的心脏负担.
研究的目的:
- 评估低水分对健康休运动员心脏负担标记物的影响.
- 为了比较运动中的心脏标志物,无论是低和低状态.
主要方法:
- 50名健康的休运动员接受了两个心肺运动测试 (CPET):一个低水化,一个无水化.
- 心脏标记物 (Troponin T,NT-pro-BNP,Chromogranin A) 和乳酸在运动前后进行测量.
- 用于CPETs的标准化坡道协议被使用.
主要成果:
- 低水显著减少了体内的水分,氧气吸收和功率输出.
- 在条件之间没有观察到Troponin T,NT-pro-BNP,Chromogranin A或乳酸水平的显著差异.
- 运动能力的降低归因于心脏输出量和血体积的减少.
结论:
- 在这个队列中,运动员的缺水诱导的运动限制可能是由于心脏输出受损,而不是直接的心脏压力.
- 研究结果表明,缺水会通过血液动力学而不是心肌损伤影响表现.
- 对患者群体的概括性需要在随机对照试验中进一步调查.
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