Rotating Shift-Work as an Independent Risk Factor for Overweight Italian Workers: A Cross-Sectional StudyReportar como inadecuado

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A job-related factor is attracting a growing interest as a possible determinant of body weight gain in shift-workers.


The aim of the study was to reinvestigate the issue of overweight between rotating shift workers and daytime workers, taking into consideration possible confounding covariate factors.


This is a cross-sectional study, conducted by reviewing data from subjects participating in an occupational surveillance program in 2008. Participants answered a self-administered questionnaire to retrieve information about socio-demographic factors and working conditions job schedule type, job-related physical activity, time in job, subjective health status, health care visits during the previous year, and lifestyle factors dietary habits, leisure time physical activity, alcohol consumption. Participants underwent a medical examination for measurement of BMI, and acquisition of medical history.


Compared to daytime workers N = 229, rotating shift workers N = 110 displayed higher BMI mean BMI was 27.6±3.9 and 26.7±3.6 for shift workers, and daytime workers, respectively; p<0.05. Logistic regression analysis allowed to highlight the role of rotating shift-work as an independent risk factor for increased body weight OR 1.93, 95%CI 1.01–3.71, being aged between 35 and 54 years was a major determinant of increased BMI OR 2.39, 95%CI 1.14–5.00. In addition, family history of obesity was the strongest determinant of overweight-obesity OR 9.79, 95%CI 1.28–74.74. Interestingly, no significant association was found between overweight and other potentially relevant factors, such as diet quality and food choices, alcohol consumption, levels of occupational and leisure-time physical activity.


Present findings seem to support the notion that rotating shift work is an independent risk factor for overweight, regardless of workers- dietary habits and physical activity levels.

Autor: Pamela Barbadoro, Lory Santarelli, Nicola Croce, Massimo Bracci, Daniela Vincitorio, Emilia Prospero , Andrea Minelli



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