ABSTRACT Exposure to extremely low-frequency electromagnetic fields (ELF-EMF) is inevitable in some industries. There are concerns about the possible effects of this exposure. The present study aimed to investigate the effect of chronic exposure to extremely low-frequency electromagnetic fields on sleep quality, stress, depression and anxiety among power plant workers. In this cross-sectional study, 132 power plant workers were included as the exposed group and 143 other workers were included as the unexposed group. The intensity of ELF-EMF at work stations was measured by using the IEEE Std C95.3.1 standard and then the time weighted average was calculated. Sleep quality, stress, depression and anxiety were measured by using the Pittsburgh Sleep Quality Index Questionnaire; and the Depression, Anxiety and Stress Scale. The workers in the exposed group experienced significantly poorer sleep quality than the unexposed group. Depression was also more severe in the exposed group than the unexposed group (P = 0.039). Increased exposure to ELF-EMF had a direct and significant relation with increased stress, depression, and anxiety. Sleep quality in technicians with the highest exposure was significantly lower than the other groups. This study suggests that long-term occupational exposure to ELF-EMF may lead to depression, stress, anxiety and poor sleep quality.

中文翻译：

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长期暴露于极低频电磁场对睡眠质量、压力、抑郁和焦虑的影响

摘要 在某些行业中，暴露在极低频电磁场 (ELF-EMF) 中是不可避免的。人们担心这种暴露可能产生的影响。本研究旨在调查长期暴露于极低频电磁场对电厂工人睡眠质量、压力、抑郁和焦虑的影响。在这项横断面研究中，132 名电厂工人被纳入暴露组，143 名其他工人被纳入未暴露组。使用IEEE Std C95.3.1标准测量工作站ELF-EMF的强度，然后计算时间加权平均值。使用匹兹堡睡眠质量指数问卷测量睡眠质量、压力、抑郁和焦虑；以及抑郁、焦虑和压力量表。暴露组的工人的睡眠质量明显低于未暴露组。暴露组的抑郁症也比未暴露组更严重（P = 0.039）。暴露于 ELF-EMF 的增加与压力、抑郁和焦虑的增加有直接且显着的关系。暴露程度最高的技术人员的睡眠质量显着低于其他组。这项研究表明，长期职业暴露于 ELF-EMF 可能会导致抑郁、压力、焦虑和睡眠质量差。暴露程度最高的技术人员的睡眠质量显着低于其他组。这项研究表明，长期职业暴露于 ELF-EMF 可能导致抑郁、压力、焦虑和睡眠质量差。暴露程度最高的技术人员的睡眠质量显着低于其他组。这项研究表明，长期职业暴露于 ELF-EMF 可能会导致抑郁、压力、焦虑和睡眠质量差。