热量指数和湿度指数,但不是其他措施,在中度循环时确定热应力补偿能力
Xiujing Zhao1, Brendon P McDermott1, Jennifer K Vanos2
1Department of Health, Human Performance, and Recreation, University of Arkansas, Fayetteville, AR, USA.
Temperature (Austin, Tex.)
|January 22, 2026
概括
热量指数 (HI) 和湿度指数 (humidex) 准确地评估不同热条件下的无法弥补的热应力和生理应力. 湿球球体温度 (WBGT) 和通用热气候指数 (UTCI) 显示了环境间应力匹配的局限性.
科学领域:
- 环境生理学环境生理学
- 人类热舒适度的人类热舒适度
- 职业健康 职业健康 职业健康
背景情况:
- 准确评估热应激对于预防在炎热环境中体力活动期间与热有关的疾病至关重要.
- 像WBGT,UTI,HI和humidex这样的常见热应力指标用于量化热应力,但它们在不同环境条件下的适用性需要检查.
- 了解这些指数的局限性对于有效的热应激管理策略至关重要.
研究的目的:
- 评估WBGT,UTCI,HI和humidex在确定不可补偿的热应力方面的有效性.
- 评估这些热应激指标在热干和热湿条件下反映生理和感知应变的能力.
- 在不同的热环境条件下比较不同热应力指数的性能.
主要方法:
- 十个健康的男性在随机的热干和温暖潮湿的环境中进行了自行车运动.
- 计算了代谢热量产生,蒸发热损耗要求和最大蒸发容量.
- 在整个试验中测量了生理 (例如心血管) 和感知反应.
主要成果:
- 尽管温度和湿度的变化,但WBGT,HI和humidex在热干和热湿条件之间没有显著差异.
- 与温湿条件相比,UTCI在热干条件下显著更高.
- 在这两种条件下,生理和感知应变的测量结果相似,表明HI和humidex充分匹配热应变,与UTCI不同.
结论:
- 热量指数 (HI) 和humidex在评估无法弥补的热应激和在不同热环境中匹配生理和感知应激方面表现出适用性.
- WBGT和UTCI在准确反映在测试的热干和热湿条件下经历的可比生理和感知应变方面表现出局限性.
- 建议在与研究条件相似的条件下使用HI和humidex来评估热应力和补偿能力.
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