Morita Yuko, Sasai-Sakuma Taeko, Inoue Yuichi
Department of Liberal Arts, Faculty of Science and Technology, Tokyo University of Science, Chiba, Japan.
Department of Somnology, Tokyo Medical University, Tokyo, Japan; Department of Life Sciences and Bioinformatics, Division of Biomedical Laboratory Sciences, Graduate School of Health Sciences, Tokyo Medical and Dental University, Tokyo, Japan.
Sleep Med. 2017 Jun;34:200-208. doi: 10.1016/j.sleep.2017.03.014. Epub 2017 Mar 31.
The aims of this study were to compare the effects of acute morning or evening exercise on nocturnal sleep in individuals with two subjective insomnia symptoms: difficulty in initiating sleep (DIS), and early morning awakening (EMA), separately for the first vs the second halves of the night.
Older individuals (55-65 years old) with DIS (N = 15) or EMA (N = 15) and age- and sex-matched controls (N = 13) participated in this non-randomized crossover study. Participants were assigned to two exercise conditions (morning exercise and evening exercise) in counterbalanced order following the baseline condition with a two-week interval between conditions. A single session of aerobic step exercise was performed during each exercise condition. Nocturnal polysomnography was carried out to evaluate objective sleep quality. Patient global impression of change scale scores for nocturnal sleep were obtained to subjectively evaluate the different groups.
Acute physical exercise did not improve subjective sleep quality. Morning exercise decreased the number of stage shifts over the whole night. The arousal index and the number of stage shifts were decreased especially during the second half of the night in all groups. Furthermore, morning exercise decreased the number of wake stages during the second half of the night in the DIS group, but not in the EMA group.
Acute morning exercise can improve nocturnal sleep quality in individuals with difficulty initiating sleep, especially during the later part of the night.
本研究旨在比较急性晨练或晚练对有两种主观失眠症状个体夜间睡眠的影响，这两种症状分别为入睡困难（DIS）和早醒（EMA），并分别针对上半夜和下半夜进行研究。
患有DIS（N = 15）或EMA（N = 15）的老年人（55 - 65岁）以及年龄和性别匹配的对照组（N = 13）参与了这项非随机交叉研究。在基线状态之后，参与者按照平衡顺序被分配到两种运动条件（晨练和晚练），两种条件之间间隔两周。在每种运动条件下进行一次有氧踏步运动。进行夜间多导睡眠图检查以评估客观睡眠质量。获取患者夜间睡眠变化量表的总体印象评分，以主观评估不同组。
急性体育锻炼并未改善主观睡眠质量。晨练减少了整晚的睡眠阶段转换次数。所有组的觉醒指数和睡眠阶段转换次数在夜间后半段尤其减少。此外，晨练减少了DIS组夜间后半段的清醒阶段次数，但EMA组没有。
急性晨练可改善入睡困难个体的夜间睡眠质量，尤其是在夜间后半段。
