Does habitual physical activity prevent insomnia? A cross-sectional and longitudinal study of elderly Japanese

Few epidemiological studies have examined the potential protective effects of physical activity on insomnia. The authors thus evaluated the association between physical activity and insomnia in a large population-based study in Shizuoka, Japan. Individual data were obtained from participants in an o...

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Bibliographic Details
Published in:Journal of aging and physical activity 2013-04, Vol.21 (2), p.119-139
Main Authors: Inoue, Sachiko, Yorifuji, Takashi, Sugiyama, Masumi, Ohta, Toshiki, Ishikawa-Takata, Kazuko, Doi, Hiroyuki
Format: Article
Language:English
Subjects:
Aged
Aged, 80 and over
Asian Continental Ancestry Group - psychology
Asian Continental Ancestry Group - statistics & numerical data
Cohort analysis
Confidence Intervals
Cross-Sectional Studies
Exercise
Female
Follow-Up Studies
Health risk assessment
Health Status
Humans
Incidence
Insomnia
Japan - epidemiology
Longitudinal studies
Male
Mobility
Motor Activity
Odds Ratio
Older people
Physical activity
Population Surveillance
Prevalence
Questionnaires
Risk Factors
Sleep Initiation and Maintenance Disorders - epidemiology
Sleep Initiation and Maintenance Disorders - psychology
Socioeconomic Factors
Surveys and Questionnaires
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Summary:Few epidemiological studies have examined the potential protective effects of physical activity on insomnia. The authors thus evaluated the association between physical activity and insomnia in a large population-based study in Shizuoka, Japan. Individual data were obtained from participants in an ongoing cohort study. A total of 14,001 older residents who completed questionnaires were followed for 3 yr. Of these, 10,211 and 3,697 participants were eligible for the cross-sectional and longitudinal analyses, respectively. The authors obtained information about the frequency of physical activity and insomnia. Then, the adjusted odds ratios and 95% confidence intervals between physical activity and insomnia were estimated. Habitual physical activity was related to lower prevalence of insomnia. Frequent physical activity also reduced the incidence of insomnia, especially difficulty maintaining sleep. For elderly people with sufficient mobility and no preexisting disease, high-frequency physical activity (e.g., 5 or more days/wk) may help reduce insomnia.
ISSN:1063-8652
1543-267X
DOI:10.1123/japa.21.2.119