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适应和不适应的个体规范区值的上限分布
Thomas E Bernard1, Candi D Ashley2, S Tony Wolf3
1College of Public Health, University of South Florida, Tampa, Florida, United States.
Journal of applied physiology (Bethesda, Md. : 1985)
|July 27, 2023
概括
热压力影响工人的健康,全球变暖增加了风险. 适应是关键. 适应是关键. 这项研究支持3°C的WBGT差异对于未经适应的工人,BSA影响男性和女性的极限.
科学领域:
- 职业健康和环境生理学
- 温度调节和热应力管理
背景情况:
- 全球变暖加剧了热应激,对工人的健康和福祉产生了不利影响.
- 适应是减轻热应激的关键策略,职业标准包括对其进行调整.
- 湿球球体温度 (WBGT) 是热应力指南中的一个关键指标.
研究的目的:
- 为了比较未适应和适应个体之间的规范区 (ULPZ) 上限值.
- 为了确定由于适应而导致的职业暴露限值 (ΔOEL) 的变化是否独立于代谢率.
- 检查 ΔOEL 与人体表面积 (BSA) 之间的关系,并比较暴露-反应曲线.
主要方法:
- 利用从未适应 (宾夕法尼亚州立大学) 和适应 (南佛罗里达大学) 参与者的经验性衍生ULPZ数据.
- 分析了数据,以探索适应和未适应状态之间的热暴露极限差异.
- 研究了身体表面积和新陈代谢率对热暴露极限的影响.
主要成果:
- 结果支持不变的3°CWBGT降低了未适应气候的工人的职业暴露限值 (OEL).
- 身体表面积部分解释了男女ULPZ值的差异.
- 恒定的OEL差异,而不是随代谢率变化的差异,更好地描述了未适应气候的个体的极限.
结论:
- 来自两个实验室的经验数据验证了基于WBGT的指导方针的适应状态调整.
- 较小的身体表面积有助于降低女性ULPZ值.
- 许多未经适应的人可以在适应工人所设定的暴露限值下安全地工作.
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