Cited by 86Sleep and related disordersSleep and Work-Related FatigueCircadian rhythm and melatonin

Long sleep duration and cause‐specific mortality according to physical function and self‐rated health: the O hsaki C ohort S tudy

Kakizaki, Masako, Kuriyama, Shinichi, Nakaya, Naoki, Sone, Toshimasa, Nagai, Masato, Sugawara, Yumi, Hozawa, Atsushi, Fukudo, Shin +1 more·2013·Journal of Sleep Research

Abstract

Summary: Although several studies have examined the association between sleep duration and all‐cause or cause‐specific mortality, it is unclear whether long sleep duration might merely reflect decreased physical strength and poorer health status. We therefore examined the association between sleep duration and all‐cause and cause‐specific mortality, and conducted stratified analysis based on physical function and self‐rated health. This study used prospective data from the O hsaki C ohort S tudy, conducted in M iyagi Prefecture, in northern J apan. This study population comprised 49 256 subjects aged 40–79 years at the baseline survey. We estimated hazard ratios (HR s) and 95% confidence intervals (CI s) of all‐cause and cause‐specific mortality according to the five categories of sleep duration (≤6, 7, 8, 9, ≥10 h day−1), treating 7 h as the reference group, employing C ox's proportional hazard regression analysis. We found that long sleep duration was associated with mortality. The HR s (95% CI s) of subjects who slept more than 10 h were 1.37 (1.27–1.47), 1.49 (1.30–1.71) and 1.53 (1.36–1.73) for mortality due to all causes, total cardiovascular disease and other causes of death mortality, respectively. The association between long sleep duration and stroke mortality was especially marked among subjects with limited physical function and poorer health status. However, we did not observe such a trend for mortality due to all causes, total cardiovascular disease, ischaemic heart disease, cancer or other causes of death. We conclude that, with the exception of stroke mortality, the association between long sleep duration and mortality is not modified by physical function or health status.

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Crossref · 10.1111/j.1365-2869.2012.01053.x

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Authors
Kakizaki, M., Kuriyama, S., Nakaya, N., Sone, T., Nagai, M., Sugawara, Y., Hozawa, A., Fukudo, S., & Tsuji, I.
Affiliations
  • Tohoku University (JP)
  • Division of Behavioral Medicine Department of Functional Medical Science Tohoku University Graduate School of Medicine Sendai Japan
Corresponding author
Kakizaki, Masako
Venue
Journal of Sleep Research
Publisher
Wiley
Published
2012-09-25
Volume
22
Issue
2
Pages
209-216
ISSN
  • 0962-1105 (ISSN-L)
  • 1365-2869
OpenAlex
W1976699879
Cited by
86
References
27
Citations by year
2026: 2 · 2025: 6 · 2024: 3 · 2023: 5 · 2022: 8 · 2021: 3 · 2020: 8 · 2019: 6 · 2018: 9 · 2017: 9 · 2016: 13 · 2015: 7 · 2014: 3 · 2013: 4
FWCI
6.01
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Sleep Research (publishedVersion)
  • PubMed (publishedVersion)
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
long sleep, excessive sleep, cause-specific mortality, all-cause mortality, cardiovascular mortality, stroke mortality, physical function, self-rated health, health status
MeSH terms
Adult, Aged, Cardiovascular Diseases, Female, Health Status, Humans, Japan, Male, Middle Aged, Mortality, Physical Fitness, Sleep, Time Factors, Proportional Hazards Models, Stroke, Self Report

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