在高年龄的温暖潮湿和热干环境中较低的最大皮肤湿度 (PSU HEAT项目)
Kat G Fisher1,2, Daniel J Vecellio1,3, Rachel M Cottle1,2
1Center for Healthy Aging, Pennsylvania State University, University Park, Pennsylvania, United States.
Journal of applied physiology (Bethesda, Md. : 1985)
|November 7, 2024
概括
皮肤最大湿度随着年龄的增长而降低,特别是在老年人中,影响热应激反应. 这项研究为模拟各种环境中成年人寿命内的温度调节提供了关键数据.
科学领域:
- 环境生理学环境生理学
- 热调节 热调节 热调节
- 人类的衰老 人类的衰老
背景情况:
- 皮肤最大湿度 (ωmax) 表示在热应激下身体的汗水覆盖极限.
- 衰老对温度调节至关重要的 ωmax 的影响在很大程度上仍未确定.
- 了解耐热性与年龄相关的变化对于公共卫生和职业安全至关重要.
研究的目的:
- 调查不同成年年龄组 (年轻人,中年人,老年人) 的最大皮肤湿度 (ωmax) 如何变化.
- 在温暖潮湿和热干环境中比较 ωmax.
- 评估老年人休息和最低活动之间的 ωmax 差异.
主要方法:
- 用分区热量计计算 ωmax 在可补偿热应力的上限.
- 参与者包括年轻 (18-29岁),中年 (40-60岁) 和年长 (65-89岁) 的成年人.
- 测量是在温暖潮湿和热干环境条件下进行的,在活动最小的情况下,对于老年人来说,在休息状态下.
主要成果:
- 与年轻和中年人相比,老年人在温暖潮湿和热干条件下表现出较低的ωmax.
- 在温暖潮湿的环境中,老年人与最低活动相比,休息时的ωmax显著降低.
- 在年轻人和中年成人之间没有发现 ωmax 的显著差异.
结论:
- 皮肤最大湿度随着年龄的增长而下降,这表明蒸发式冷却能力降低.
- 老年人对热应激的门较低,特别是在潮湿的条件下休息时.
- 这些发现为模拟成年人一生中热应激反应提供了必要的数据.
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