Effects of physical fatigue superimposed on high temperatures on construction workers’ cognitive performance

IF 4.7 1区工程技术 Q1 ENGINEERING, INDUSTRIAL Safety Science Pub Date : 2024-11-01 DOI:10.1016/j.ssci.2024.106705

Yewei Ouyang, Xiaowei Luo

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Abstract

Effects of physical fatigue on construction safety have been widely investigated, but it fails to examine the effects when physical fatigue is combined with adverse environmental conditions. This study investigated the combined effects of physical fatigue and high temperatures on workers’ safety-related cognitive performances, including mental workload, mental fatigue, and attention. A within-subject (n = 20) experiment was designed, where subjects suffered non-fatigued and three fatigued (low, medium, and high levels) conditions, both in normothermic and hyperthermic conditions. Their cognitions were recorded using an electroencephalogram (EEG) device while performing cognitive tasks. It indicates that physical fatigue significantly impaired cognitive performances; when the heat was superimposed on physical fatigue, the negative effects of physical fatigue on cognition were magnified; the cognitive impairments would further undermine task performance. The findings would help expand the understanding of the effects of physical fatigue on construction safety, and also provide a theoretical basis for implementing safety management measures in job sites with heat exposure.

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高温叠加的身体疲劳对建筑工人认知能力的影响

身体疲劳对建筑安全的影响已被广泛研究，但没有研究身体疲劳与不利环境条件相结合时的影响。本研究调查了身体疲劳和高温对工人与安全相关的认知能力的综合影响，包括脑力劳动负荷、精神疲劳和注意力。研究设计了一个受试者内实验（n = 20），受试者在常温和高热条件下分别处于非疲劳和三种疲劳（低度、中度和高度）状态。使用脑电图（EEG）设备记录受试者在执行认知任务时的认知情况。结果表明，身体疲劳会严重影响认知表现；当高温与身体疲劳叠加时，身体疲劳对认知的负面影响会被放大；认知障碍会进一步影响任务表现。研究结果将有助于扩大对身体疲劳对建筑安全影响的理解，也为在高温暴露的工作场所实施安全管理措施提供了理论依据。

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来源期刊

Safety Science 管理科学-工程：工业

CiteScore

13.00

自引率

9.80%

发文量

335

审稿时长

53 days

期刊介绍： Safety Science is multidisciplinary. Its contributors and its audience range from social scientists to engineers. The journal covers the physics and engineering of safety; its social, policy and organizational aspects; the assessment, management and communication of risks; the effectiveness of control and management techniques for safety; standardization, legislation, inspection, insurance, costing aspects, human behavior and safety and the like. Papers addressing the interfaces between technology, people and organizations are especially welcome.