Department of Public Health, Graduate School, The Catholic University of Korea, Secho-gu, Seoul, Republic of Korea.
Department of Preventive Medicine, College of Medicine, The Catholic University of Korea, Secho-gu, Seoul, Republic of Korea.
PLoS One. 2021 Mar 2;16(3):e0247746. doi: 10.1371/journal.pone.0247746. eCollection 2021.
The purpose of this study was to clarify the odds ratio for association between working hours and obesity in Korean male wage workers and investigate the role of sleep duration. This study is a cross-sectional one using large-scale national data from the Korea National Health and Nutrition Examination Survey collected between 2010 and 2015 to evaluate 2,592 male wage workers (between the ages of 19 and 60 years). Obesity was defined as 25kg/m2 or more and working hours per week were categorized into <40, 40-49, 50-59, and ≥60 hours. Multiple regression analysis was performed to examine the odds ratio for association between working hours and obesity, after controlling for age, education, income, marital status, smoking, drinking, physical activity, daily energy intake, sleep duration, hypertension, diabetes, dyslipidemia, work schedule, and job category. Next, to study the mediating effect of sleep duration on the association between working hours and obesity, an analysis was performed using the Baron and Kenny method and the Sobel test. Results showed that workers with 50 to 59 hours had 1.4 times higher odds (odds ratio [OR] = 1.4, confidence interval [CI]: 1.11-1.85) of obesity and workers with 60 hours or more had 1.4 times higher odds (OR = 1.4, CI: 1.06-1.90) of obesity than workers with less than 40 hours. Sleep was found to have a mediating effect on the association between working time and body mass index. Therefore, the results of this analysis suggest that practitioners should identify potential factors such as working time and sleeping time when preventing work-related obesity.
本研究旨在阐明韩国男性工薪族工作时间与肥胖之间的比值比，并探讨睡眠时间的作用。本研究采用 2010 年至 2015 年期间韩国全国健康与营养调查的大规模全国数据进行横断面研究，评估了 2592 名男性工薪族（年龄在 19 至 60 岁之间）。肥胖定义为体重指数≥25kg/m2，每周工作时间分为<40、40-49、50-59 和≥60 小时。在控制年龄、教育程度、收入、婚姻状况、吸烟、饮酒、身体活动、每日能量摄入、睡眠时间、高血压、糖尿病、血脂异常、工作时间表和工作类别后，采用多回归分析来检验工作时间与肥胖之间的比值比。接下来，采用 Baron 和 Kenny 方法和 Sobel 检验来研究睡眠时间对工作时间与肥胖之间关联的中介作用。结果表明，每周工作 50-59 小时的工人肥胖的几率是每周工作少于 40 小时的工人的 1.4 倍（比值比[OR] = 1.4，置信区间[CI]：1.11-1.85），每周工作 60 小时或以上的工人肥胖的几率是每周工作少于 40 小时的工人的 1.4 倍（OR = 1.4，CI：1.06-1.90）。睡眠时间对工作时间和体重指数之间的关联有中介作用。因此，本分析结果提示，从业者在预防与工作相关的肥胖症时，应识别工作时间和睡眠时间等潜在因素。
