Cross-Sectional Association Between Work Intervals and Metabolic Syndrome Among Japanese Daytime Workers

2025-10-01

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Chihiro Nagayama

Haruka Miyake

Shohei Yamamoto

Yosuke Inoue

Maki Konishi

Hiroko Okazaki

Hiroshi Ide

Toshiaki Miyamoto

Takeshi Kochi

Aki Tomizawa

Seitaro Dohi

Isamu Kabe

Tetsuya Mizoue *

DOI：10.1097/JOM.0000000000003454

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Abstract

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ObjectiveThis study aimed to investigate the association between work intervals and metabolic syndrome (MetS) among Japanese daytime workers.MethodsA cross-sectional analysis was conducted on 5094 daytime workers from the Japan Epidemiology Collaboration on Occupational Health Study. Work intervals, with and without commuting, were calculated using a self-administered questionnaire. The Joint Interim Statement criteria defined MetS. Logistic regression estimated odds ratio (OR) and 95% confidence interval (CI) for MetS across quartiles of work intervals.ResultsAlthough participants with the shortest interval had unhealthy lifestyles, they had a lower prevalence of MetS (OR, 0.75; 95% CI, 0.59-0.97) than those with the longest. This association was no longer significant after accounting for commuting (OR, 0.86; 95% CI, 0.68-1.10). MetS was more prevalent among those with unhealthy lifestyles, regardless of work interval.ConclusionsCross-sectionally measured shorter work intervals were not associated with a higher prevalence of MetS.

Keywords:

work intervals

metabolic syndrome

lifestyle factors

occupational health

Cross-Sectional Association Between Work Intervals and Metabolic Syndrome Among Japanese Daytime Workers

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