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Clinical Trial
. 2019 Apr 18;14(4):e0215345.
doi: 10.1371/journal.pone.0215345. eCollection 2019.

Seasonal changes in sleep duration and sleep problems: A prospective study in Japanese community residents

Masahiro Suzuki  1 , Tetsuya Taniguchi  2 , Ryuji Furihata  1 , Katsushi Yoshita  3 , Yusuke Arai  4 , Nobuo Yoshiike  5 , Makoto Uchiyama  1
Affiliations
Clinical Trial

Seasonal changes in sleep duration and sleep problems: A prospective study in Japanese community residents

Masahiro Suzuki et al. PLoS One. .

Abstract

Background: A scientific understanding of the effects of seasonal changes on sleep duration and sleep problems such as insomnia and hypersomnia has yet to be elucidated; however, such an understanding could aid the establishment of an optimal sleep hygiene program to treat such problems.

Methods: We investigated the effects of seasonal changes on sleep duration and sleep problems in Japanese community residents. Data on 1,388 individuals aged 15-89 years who participated in the Survey of Seasonal Variations in Food Intakes conducted by the National Institute of Health and Nutrition of Japan (2004-2007) were analyzed. Participants completed a questionnaire including items on sleep duration and sleep problems (difficulty initiating sleep [DIS], difficulty maintaining sleep [DMS]/early morning awakening [EMA], and excessive daytime sleepiness [EDS]). Data were prospectively collected at four time points (spring, summer, fall, and winter).

Results: Seasonal changes in sleep duration were found, with the longest in winter and the shortest in summer (winter-summer difference: 0.19 h). The seasonality of sleep duration was influenced by age, sex, and residential area. In terms of age, seasonal changes in sleep duration were found in the middle and old age groups, but not in the young age group. Seasonal changes in the frequencies of sleep problems were found for some items in the young age group (DMS/EMA and EDS) and middle age group (DIS and DMS/EMA); however, no such changes were observed in the old age group.

Conclusion: Seasonal effects on sleep and sleep problems were found in Japanese community residents, but these varied between age groups. Furthermore, seasonal changes in sleep duration were influenced by sex and residential area.

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Conflict of interest statement

The authors have declared that no competing interests exist.

Figures

Fig 1
Fig 1
Sleep duration by season (a), age (b), sex (c), and area (d). Data are presented as estimated marginal means with standard errors. P-values (Tukey–Kramer) are shown for significant differences.
Fig 2
Fig 2
The interactions found in the model: season × age (a), season × sex (b), season × area (c), and sex × age (d). The vertical axis shows the sleep duration (hours). Data are presented as estimated marginal means with standard errors.
See this image and copyright information in PMC

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References

    1. Banks S, Dinges DF. Behavioral and physiological consequences of sleep restriction. J Clin Sleep Med. 2007;3: 519–528. - PMC - PubMed
    1. Cappuccio FP, D'Elia L, Strazzullo P, Miller MA. Quantity and quality of sleep and incidence of type 2 diabetes: a systematic review and meta-analysis. Diabetes Care. 2010;33: 414–420. 10.2337/dc09-1124 - DOI - PMC - PubMed
    1. Gangwisch JE, Heymsfield SB, Boden-Albala B, Buijs RM, Kreier F, Pickering TG, et al. Short sleep duration as a risk factor for hypertension: analyses of the first National Health and Nutrition Examination Survey. Hypertension. 2006;47: 833–839. 10.1161/01.HYP.0000217362.34748.e0 - DOI - PubMed
    1. Meisinger C, Heier M, Lowel H, Schneider A, Doring A. Sleep duration and sleep complaints and risk of myocardial infarction in middle-aged men and women from the general population: the MONICA/KORA Augsburg cohort study. Sleep. 2007;30: 1121–1127. - PMC - PubMed
    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: 619–626. - PMC - PubMed

Publication types

Grants and funding

This study was funded by project and research grants from the Japanese Ministry of Health, Labour, and Welfare (to N.Y.) and supported by AMED (grant number JP17hk0102041) (to M.S. and M.U.). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.