title: Increases in body mass index and waist circumference as outcomes of working overtime.
abstract: This epidemiologic study was undertaken to determine whether working overtime is associated with anthropometric indices and serum lipids, risk factors for obesity, in white-collar workers. Non-management white-collar male workers were eligible. Body weight and height, waist circumference, skinfold thickness, serum total cholesterol and triglycerides were measured. Weight, height and waist circumference data obtained 3 years previously were also used. Lifestyle information was obtained by means of a self-administered questionnaire. Overtime hours correlated significantly with the 3-year change in body mass index (r = 0.206, p < 0.0017) and waist circumference (r = 0.218, p = 0.0091), but not with either the most recent anthropometric indices or serum lipids. Overtime hours were also intercorrelated (r = 0.436, p < 0.0001) with dinner time. The present study suggested that working overtime is associated with the increases in BMI and waist circumference over a 3-year period although the associations were weak. Additionally, eating habits of those with working overtime might reflect an intervening effect on the anthropometric changes.
authors.affiliation: Department of Hygiene and Preventive Medicine, Niigata University School of Medicine, Japan. kazun@med.niigata-u.ac.jp
authors.forename: K
authors.initials: K
authors.lastname: Nakamura
authors.forename: S
authors.initials: S
authors.lastname: Shimai
authors.forename: S
authors.initials: S
authors.lastname: Kikuchi
authors.forename: H
authors.initials: H
authors.lastname: Takahashi
authors.forename: M
authors.initials: M
authors.lastname: Tanaka
authors.forename: S
authors.initials: S
authors.lastname: Nakano
authors.forename: Y
authors.initials: Y
authors.lastname: Motohashi
authors.forename: H
authors.initials: H
authors.lastname: Nakadaira
authors.forename: M
authors.initials: M
authors.lastname: Yamamoto
mesh_terms: D000328:Adult; D001824:Body Constitution; D015992:Body Mass Index; D002784:Cholesterol / Q000097:blood; D003430:Cross-Sectional Studies; D004435:Eating; D006801:Humans; D008019:Life Style; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D009765:Obesity / Q000097:blood / Q000453:epidemiology*; D009784:Occupational Diseases / Q000097:blood / Q000453:epidemiology*; D010561:Personnel Staffing and Scheduling; D015995:Prevalence; D014280:Triglycerides / Q000097:blood; D016526:Workload
chemical_list: D014280:Triglycerides; D002784:Cholesterol