Inoue Sachiko, Yorifuji Takashi, Sugiyama Masumi, Ohta Toshiki, Ishikawa-Takata Kazuko, Doi Hiroyuki
Dept. of Human Ecology, Okayama University, Okayama, Japan.
J Aging Phys Act. 2013 Apr;21(2):119-39. doi: 10.1123/japa.21.2.119. Epub 2012 Jul 24.
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.
很少有流行病学研究探讨身体活动对失眠的潜在保护作用。因此，作者在日本静冈县一项基于大规模人群的研究中评估了身体活动与失眠之间的关联。个体数据来自一项正在进行的队列研究的参与者。对总共14001名完成问卷调查的老年居民进行了3年的随访。其中，分别有10211名和3697名参与者符合横断面分析和纵向分析的条件。作者获取了有关身体活动频率和失眠情况的信息。然后，估计了身体活动与失眠之间经调整的优势比和95%置信区间。习惯性身体活动与较低的失眠患病率相关。频繁的身体活动也降低了失眠的发生率，尤其是难以维持睡眠的情况。对于行动能力充足且无既往疾病的老年人，高频身体活动（例如，每周5天或更多天）可能有助于减少失眠。
