防晒不会改变年轻人的出汗反应或关键环境极限 (PSU HEAT项目)
Kat G Fisher1, Rachel M Cottle1,2, W Larry Kenney1,2,3
1Department of Kinesiology, The Pennsylvania State University, University Park, Pennsylvania, United States.
Journal of applied physiology (Bethesda, Md. : 1985)
|December 21, 2023
概括
防晒的使用不会通过影响热量损失而损害运动表现. 矿物和化学防晒并没有改变运动员在炎热环境中炼的出汗反应或关键环境极限.
科学领域:
- 运动生理学 运动生理学
- 环境生理学环境生理学
- 皮肤病学 皮肤病学
背景情况:
- 户外运动员经常避免使用防晒,因为担心温度调节和表现受损.
- 之前关于防晒对温度调节的影响的研究已经产生了相互矛盾的结果.
- 了解防晒对热量损失的影响对于运动员的安全和表现至关重要.
研究的目的:
- 为了研究矿物质和化学基防晒对出汗反应的影响.
- 为了确定防晒在热干和热湿条件下如何影响关键环境极限.
- 评估防晒是否会影响运动期间的温度调节热量损失.
主要方法:
- 9名健康成年人 (3名男性/6名女性) 参加了这项研究.
- 试验对象在炎热干燥和温暖潮湿的环境中都暴露于逐渐增长的热应激.
- 测量了温度调节反应,没有使用防晒,矿物防晒和化学防晒.
主要成果:
- 关键的环境极限 (关键的干泡温度和水蒸气压) 在所有防晒条件下都没有显著差异 (P ≥0.39).
- 在这两种环境中,防晒的应用没有影响出汗率,蒸发热量损失,皮肤湿度和出汗效率 (P ≥ 0.48).
- 在热应激期间的核心温度变化没有被防晒的使用改变.
结论:
- 无论是基于矿物质还是化学品的防晒,都不会对在高温运动期间的温度调节反应产生负面影响.
- 研究结果表明,运动员可以使用防晒,而不会影响运动员散热能力或环境限制.
- 防晒不会干扰身体的生理机制来调节在炎热的条件下身体活动期间的温度.
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