Skip to main page content
Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
, 20 (5), 385-90

A 4-year Study of the Association Between Short Sleep Duration and Change in Body Mass Index in Japanese Male Workers

Affiliations

A 4-year Study of the Association Between Short Sleep Duration and Change in Body Mass Index in Japanese Male Workers

Chihiro Nishiura et al. J Epidemiol.

Abstract

Background: Studies of Western populations have shown an inconsistent longitudinal association between short sleep duration and change in body mass index (BMI); a recent Japanese cohort study reported a significant association in men, but over a 1-year period. The aim of this longitudinal study was to examine whether this association was robust over a 4-year interval in Japanese men.

Methods: A total of 3803 middle-aged Japanese male white-collar workers (mean age 47.8 years, mean BMI 23.9 kg/m(2)) in Tokyo, Japan, were included in this study from 1994-1995 (baseline) to 1998-1999 (follow-up). Height and weight were objectively measured at annual health checkups, and other data, including sleep duration, were collected using a structured interview. We used linear regression models to estimate change in BMI, after adjustment for covariates. The reference category for sleep duration was set to 7 hours, to conform with previous studies.

Results: As compared with participants sleeping 7 hours, those sleeping 5 hours or less had a significantly higher BMI at baseline (beta coefficient: 0.34 kg/m(2), 95% confidence interval (CI): 0.03, 0.65) and gained 0.15 kg/m(2) in BMI over 4 years (95% CI: 0.03, 0.27), after adjustment for age, baseline BMI, lifestyle behavior, and medication.

Conclusions: The longitudinal association between short sleep duration at baseline and relative increase in BMI was significant in Japanese male workers over a 4-year interval.

Figures

Figure.
Figure.. The longitudinal relationship between baseline sleep duration and mean change in BMI over a 4-year interval, by baseline BMI tertiles. The symbols show the mean changes in BMI and the error bars show the 95% confidence interval, after adjustment for age, baseline BMI, current medications, drinking, exercise, family history of disease, and smoking. The tertile values of baseline BMI were: <22.70 kg/m2 (T1; n = 1268), 22.70–24.84 kg/m2 (T2; n = 1270), and ≥24.85 kg/m2 (T3; n = 1265). Abbreviation: BMI, body mass index.

Similar articles

See all similar articles

Cited by 18 PubMed Central articles

See all "Cited by" articles

References

    1. Cappuccio FP , Taggart FM , Kandala NB , Currie A , Peile E , Stranges S , et al. Meta-analysis of short sleep duration and obesity in children and adults . Sleep. 2008;31:619–26 - PMC - PubMed
    1. Patel SR , Hu FB. Short sleep duration and weight gain: a systematic review . Obesity (Silver Spring). 2008;16:643–53 10.1038/oby.2007.118 - DOI - PMC - PubMed
    1. Horne J Short sleep is a questionable risk factor for obesity and related disorders: statistical versus clinical significance . Biol Psychol. 2008;77:266–76 10.1016/j.biopsycho.2007.12.003 - DOI - PubMed
    1. Knutson KL , Van Cauter E. Associations between sleep loss and increased risk of obesity and diabetes . Ann N Y Acad Sci. 2008;1129:287–304 10.1196/annals.1417.033 - DOI - PMC - PubMed
    1. Gangwisch JE , Malaspina D , Boden-Albala B , Heymsfield SB. Inadequate sleep as a risk factor for obesity: analyses of the NHANES I . Sleep. 2005;28:1289–96 - PubMed
Feedback