Agreement between measured and self-reported physiological strain in young adults and older adults with and without common chronic diseases during simulated occupational heat stress.

IF 1.5 4区 医学 Q4 ENVIRONMENTAL SCIENCES Journal of Occupational and Environmental Hygiene Pub Date : 2024-12-01 Epub Date: 2024-10-24 DOI:10.1080/15459624.2024.2406227
Fergus K O'Connor, Robert D Meade, Sean R Notley, Leonidas G Ioannou, Andreas D Flouris, Glen P Kenny
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Abstract

While monitoring physiological strain is recommended to safeguard workers during heat exposure, it is logistically challenging. The perceptual strain index (PeSI) is a subjective estimate thought to reflect the physiological strain index (PSI) that requires no direct monitoring. However, advanced age and chronic diseases (hypertension/type 2 diabetes [T2D]) influence the perception of heat stress, potentially limiting the utility of the PeSI. We therefore assessed whether the relation and agreement between the PeSI and PSI during simulated work in various environmental conditions is modified by age and T2D/hypertension. Thirteen young adults and 37 older adults without (n = 14) and with T2D (n = 10) or hypertension (n = 13) walked on a treadmill (∼200 W/m2) for 180 min or until termination (volitional fatigue, rectal temperature ≥39.5 °C) in 16, 24, 28, and 32 °C wet-bulb globe temperatures. Rectal temperature and heart rate were recorded to calculate PSI (0-10 scale). Rating of perceived exertion and thermal sensation were recorded to calculate PeSI (0-10 scale). The relation between hourly PSI and PeSI was assessed via linear mixed models. Mean bias (95% limits of agreement [LoA]) between PSI and PeSI was assessed via Bland-Altman analysis. PSI increased with PeSI (p < 0.001), but the slope of this relation was not different between young and older adults (p = 0.189) or as a function of chronic disease (within older adults; p = 0.183). The mean bias between PSI and PeSI was small (0.02), but the 95% LoA was wide (-3.3-3.4). Together, a linear relation between PeSI and PSI was observed but agreement between these measures varied considerably across individuals and thus PeSI should not be used as a surrogate marker of PSI. Caution should be taken when utilizing the PeSI to estimate physiological strain on workers.

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在模拟职业热应激过程中,患有和未患有常见慢性病的年轻人和老年人测量的生理应变与自我报告的生理应变之间的一致性。
虽然建议监测生理应变以保障工人在高温暴露期间的安全,但这在后勤方面具有挑战性。感知应变指数(PeSI)是一种主观估计,被认为可以反映生理应变指数(PSI),无需直接监测。然而,高龄和慢性疾病(高血压/2 型糖尿病 [T2D])会影响对热应激的感知,从而可能限制 PeSI 的实用性。因此,我们评估了在各种环境条件下模拟工作时 PeSI 和 PSI 之间的关系和一致性是否会因年龄和 T2D/高血压而改变。在 16、24、28 和 32 °C 的湿球温度下,13 名年轻人和 37 名老年人在跑步机(200 W/m2)上步行 180 分钟(自愿疲劳,直肠温度≥39.5 °C),无 T2D(14 人),有 T2D(10 人)或高血压(13 人)。记录直肠温度和心率以计算 PSI(0-10 级)。记录体力感觉和热感觉评分以计算 PeSI(0-10 级)。通过线性混合模型评估每小时 PSI 和 PeSI 之间的关系。PSI 和 PeSI 之间的平均偏差(95% 一致度 [LoA])通过 Bland-Altman 分析进行评估。PSI 随 PeSI 的增加而增加(p = 0.189),或与慢性疾病有关(在老年人中;p = 0.183)。PSI 和 PeSI 之间的平均偏差很小(0.02),但 95% LoA 很宽(-3.3-3.4)。综合来看,PeSI 和 PSI 之间存在线性关系,但这些测量值之间的一致性在不同个体之间存在很大差异,因此不应将 PeSI 用作 PSI 的替代标记。在使用 PeSI 估算工人的生理负荷时应谨慎。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Journal of Occupational and Environmental Hygiene
Journal of Occupational and Environmental Hygiene 环境科学-公共卫生、环境卫生与职业卫生
CiteScore
3.30
自引率
10.00%
发文量
81
审稿时长
12-24 weeks
期刊介绍: The Journal of Occupational and Environmental Hygiene ( JOEH ) is a joint publication of the American Industrial Hygiene Association (AIHA®) and ACGIH®. The JOEH is a peer-reviewed journal devoted to enhancing the knowledge and practice of occupational and environmental hygiene and safety by widely disseminating research articles and applied studies of the highest quality. The JOEH provides a written medium for the communication of ideas, methods, processes, and research in core and emerging areas of occupational and environmental hygiene. Core domains include, but are not limited to: exposure assessment, control strategies, ergonomics, and risk analysis. Emerging domains include, but are not limited to: sensor technology, emergency preparedness and response, changing workforce, and management and analysis of "big" data.
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