Associação entre privação do sono e obesidade em trabalhadores

Abstract

Aims: To study the association between sleep deprivation and obesity among workers. Methods: We conducted a cross-sectional study of workers at a notebooks manufacturing in southern Brazil, which has three sectors of work (production line, back office and logistics), and the production sector works 24 hours a day. Demographic, socioeconomic, occupational and behavioral characteristics were obtained by a self-completion questionnaire, standardized and pre-tested. Weight and height measurements were self-reported and body mass index calculated. The cutoff point for obesity was ≥30 kg/m2. Sleep duration was categorized into at least six hours a day and less than six hours a day (sleep deprivation). For bivariate analysis, chi-square test and test for linear trend were used. The crude and adjusted odds ratios were calculated using Poisson regression. Results: The final sample consisted of 193 workers, with a mean age of 34±11 years, 99 (51%) women. The prevalence of obesity was 27 (13.98%), and the prevalence of sleep deprivation was 40 (20.7%). Sleep deprivation has been associated with the production sector (p=0.011), the night shift (p<0.001) and physical inactivity (p=0.003). The presence of obesity was associated with sleep deprivation (p=0.006). After controlling for potential confounding factors, the likelihood of being obese was 2.37 (95% CI 1.08 to 5.21) times higher among workers in sleep deprivation. Conclusions: The results showed an association between sleep deprivation and obesity. In addition, sleep deprivation was associated with work on the night shift.