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热身运动对生理反应:对降低风险和适应的影响
Jesse L Criddle1, Kristanti W Wigati1, Joao Carlos Locatelli1
1School of Human Sciences (Exercise and Sports Science), The University of Western Australia, Perth, Western Australia, Australia.
在高温运动期间,较高的内脏脂肪和心脏功能的改变预示着身体核心温度升高,但不预示症状的发展. 这些发现对于理解挑战性环境中的热应变至关重要.
科学领域:
- 运动生理学 运动生理学
- 环境健康 环境健康
- 人类表现的人类表现.
背景情况:
- 最近的研究表明,核心体温 (Tc) 与在炎热条件下进行体力运动时完成任务之间的联系断开了.
- 了解影响个人对强力热应激反应的生理因素对于安全性和性能至关重要.
研究的目的:
- 为了研究在热中成功完成运动的人与那些变得高温或有症状的人之间的生理差异.
- 测试中心和外围生理变量在成功完成者和经历热应变的人之间有系统的差异的假设.
主要方法:
- 38名健康参与者在40°C,50%相对湿度的室内进行了120分钟的步行 (5公里/小时,2%级).
- 物理热应变在休息和运动期间被评估.
- 参与者被分为完成者 (n=27),高温者 (Tc > 39°C,n=7) 或症状患者 (n=4).
主要成果:
- 与完成者相比,高温患者的内脏脂肪组织显著增加 (p=0.034).
- 超热的参与者在步行早期表现出更高的心率 (p=0.009) 和较低的终端透静体积和中风体积 (p=0.031).
- 有症状的个体没有达到Tc> 39°C,高热症患者没有报告任何症状.
结论:
- 在炼性热量暴露期间,增加脂肪和早期血液动力学变化与核心体温升高有关.
- 超热本身与这个队列的症状发展没有关联.
- 基线身体组成和健身参数没有预测症状的发展.
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