Distinct effects of low-intensity physical activity in the evening on sleep quality in older women: A comparison of exercise and housework
Distinct effects of low-intensity physical activity in the evening on sleep quality in older women: A comparison of exercise and housework
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DOI：
10.1016/j.exger.2020.111165
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发表时间：
2021-01-01
影响因子：
3.9
通讯作者：
Okura, Tomohiro
中科院分区：
文献类型：
--
作者：
Seol, Jaehoon;Park, Insung;Okura, Tomohiro
背景：体力活动的强度、类型和时间对睡眠的影响尚不清楚。由于白天的体力活动，适当增加核心体温有助于老年人的睡眠。我们之前的研究表明，与晨练相比，晚上锻炼对老年人的睡眠质量有更积极的影响。然而，不锻炼的老年人占人口的很大一部分。本研究旨在探讨不同的影响，低强度的运动和家务劳动在晚上对老年妇女的睡眠quality in older women.Methods：这项随机交叉研究包括10名年龄在65-79岁的健康老年妇女。参与者进行低强度的体力活动30分钟，无论是有氧运动（每分钟70步），家务（在相同的强度），或保持久坐不动（对照）睡前3小时。睡眠记录多导睡眠图，并在第二天早上使用Oguri-Shirakawa-Azumi睡眠调查表，中老年版（OSA-MA）问卷评估自我报告的睡眠质量。与对照试验相比，每次活动试验后，参与者的核心体温显著升高（家务和有氧运动分别为0.5 +/- 0.4和0.4 +/- 0.4摄氏度）。试验之间的睡眠潜伏期存在显著差异（对照组、家务劳动组和有氧运动组分别为14.2 +/- 19.1、9.9 +/- 15.6和4.2 +/- 3.5分钟; ANOVA P = 0.011）。有氧运动后的δ功率密度显著高于对照组。我们观察到，在睡眠的第一个小时，由于有氧运动和家务劳动，三角洲功率分别增加了53%和15%。有氧运动后OSA-MA总分显著升高（对照组、家务组和运动组分别为91.0 +/- 5.4、88.1 +/- 6.9和108.6 +/- 5.9）。结论：晚上进行低强度有氧运动可改善多导睡眠图和自我报告的睡眠质量。虽然家务劳动使核心体温增加到与有氧运动后观察到的相同水平，但家务劳动后自我报告的睡眠质量低于有氧运动后。
Background: The effects of intensity, type, and time of day of physical activity on sleep are not well understood. An appropriate increase in core body temperature, due to physical activity during daytime, aids sleep in older adults. Our previous study showed that evening exercise has more positive effects on sleep quality in older adults when compared with morning exercise. However, older adults who do not exercise form a large part of the population. This study aimed to examine the distinct effects of low-intensity exercise and housework during the evening on sleep quality in older women.Methods: This randomized crossover study included 10 healthy older women aged 65-79 years. The participants engaged in low-intensity physical activity for 30 min, either aerobic exercise (70 steps per minute), housework (at the same intensity), or remained sedentary (control) 3 h before bedtime. Sleep was recorded polysomnographically, and self-reported sleep quality was assessed the next morning using the Oguri-Shirakawa-Azumi sleep inventory, Middle-Aged and Aged version (OSA-MA) questionnaire.Results: Compared with the control trial, core body temperature was significantly elevated in participants after each activity trial (0.5 +/- 0.4 and 0.4 +/- 0.4 degrees C for housework and aerobic exercise, respectively). There was a significant difference in sleep latency (14.2 +/- 19.1, 9.9 +/- 15.6, and 4.2 +/- 3.5 min for control, housework, and aerobic exercise, respectively; ANOVA P = 0.011) among the trials. The delta power density after aerobic exercise was significantly higher than that after the control trial. We observed an increase of 53% and 15% in delta power during the 1st hour of sleep as a result of aerobic exercise and housework, respectively. The total score on OSA-MA was significantly higher after aerobic exercise (91.0 +/- 5.4, 88.1 +/- 6.9, and 108.6 +/- 5.9 points for control, housework, and exercise, respectively).Conclusions: Engaging in low-intensity aerobic exercise in the evening improved polysomnographic and self-reported sleep quality. Although housework increased core body temperature to the same level as that observed after aerobic exercise, self-reported sleep quality after housework was lower than that after aerobic exercise.