A 4-Year Study of the Association between Short Sleep Duration and Change in Body Mass Index in Japanese Male Workers
Open accessAbstract
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.
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In a 4-year longitudinal study of 3803 Japanese male white-collar workers, those sleeping ≤5 h/night had greater longitudinal change in BMI (B = 0.15 [0.03-0.27]) than those sleeping 7 h/night.
“Those sleeping ≤5 h/night (B = 0.15 [0.03-0.27])had greater longitudinal change in BMI than those sleeping 7 h/night.”
From The effects of sleep disruption on metabolism, hunger, and satiety, and the influence of psychosocial stress and exercise: A narrative review (2024) · cites this paper as [93]
Among 28 longitudinal studies on short sleep and later obesity risk in children and adults, 22 found that short sleep was linked to greater weight gain, obesity, or fat mass after a few years.
“Of the 28 longitudinal studies that examined the impact of short sleep on obesity risk in children and adults, 22 reported that short sleep is associated with an increased risk of weight gain or development of obesity and/or increased fat mass a few years later”
From Sleep and metabolic function (2012) · cites this paper as [120]
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- Authors
- Nishiura, C., & Hashimoto, H.
- Affiliations
- Tokyo Gas (Japan) (JP)
- The University of Tokyo (JP)
- Venue
- Journal of Epidemiology
- Publisher
- Japan Epidemiological Association
- Published
- 2010
- Volume
- 20
- Issue
- 5
- Pages
- 385-390
- ISSN
- 0917-5040 (ISSN-L)
- 1349-9092
- PMC
- PMC3900833
- OpenAlex
- W2065114307
- Cited by
- 59
- References
- 19
- Citations by year
- 2026: 2 · 2025: 1 · 2024: 1 · 2023: 3 · 2022: 3 · 2021: 3 · 2020: 4 · 2019: 4 · 2018: 5 · 2017: 1 · 2016: 4 · 2015: 5 · 2014: 6 · 2013: 7 · 2012: 4
- FWCI
- 7.08
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- cc-by
- Locations
- Journal of Epidemiology (publishedVersion, cc-by)
- Europe PMC (PubMed Central) (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- Institutional Repositories DataBase (IRDB) (submittedVersion)
- Topics
- Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and related disorders
- Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and Work-Related Fatigue
- Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Circadian rhythm and melatonin
- Keywords
- short sleep duration, body mass index, weight gain, obesity, Japanese men, white-collar workers, middle-aged adults
- MeSH terms
- Follow-Up Studies, Humans, Japan, Longitudinal Studies, Male, Middle Aged, Sleep Deprivation, Time Factors, Body Mass Index, Qualitative Research
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