Lahiani Mariam, Ben Waer Fatma, Bouchaala Fatma, Laatar Rabeb, Rebai Haithem, Sahli Sonia
University of Sfax, Sfax, Tunisia.
Percept Mot Skills. 2023 Feb;130(1):5-26. doi: 10.1177/00315125221133599. Epub 2022 Oct 14.
Postmenopausal women suffer from postural balance issues. During a 24-hour time span, postural performance undergoes radical changes as influenced by the circadian rhythm. In this study, we aimed to investigate time-of-day effects on postural balance in postmenopausal women and balance relationships with menopausal symptoms. Two groups of women, aged 40-50 years, participated in this study: a menopausal group and a control group. We evaluated their postural balance and menopausal symptoms (mood, sleepiness and fatigue) in five sessions over the course of a day: at 06:00 hours, at 10:00, at 14:00, at 18:00 and at 22:00. The results showed that postural balance (center of pressure area (CoP)) values of postmenopausal women were significantly worse ( < .05) at 22:00. Moreover, at this time-of-day, participants in the menopausal group were more tired, less vigilant and experienced a lower mood. We found negative correlations between postural balance and both mood and fatigue levels. However, there was no time-of-day effect on postural balance, mood, fatigue, and sleepiness among participants in the control group. Thus, time-of-day should be considered a factor to control when assessing postural balance and designing intervention studies for postmenopausal women; and it is important for these women to be cautious of fall risks at night, as they are then less stable than at other times-of-day.
绝经后女性存在姿势平衡问题。在24小时的时间段内，姿势表现会受到昼夜节律的影响而发生剧烈变化。在本研究中，我们旨在调查一天中不同时间对绝经后女性姿势平衡的影响以及与绝经症状的平衡关系。两组年龄在40 - 50岁的女性参与了本研究：绝经组和对照组。我们在一天中的五个时段评估了她们的姿势平衡和绝经症状（情绪、嗜睡和疲劳）：06:00、10:00、14:00、18:00和22:00。结果显示，绝经后女性在22:00时的姿势平衡（压力中心面积（CoP））值显著更差（<.05）。此外，在这个时段，绝经组的参与者更疲惫、警觉性更低且情绪更低落。我们发现姿势平衡与情绪和疲劳水平之间存在负相关。然而，对照组参与者的姿势平衡、情绪、疲劳和嗜睡不存在一天中不同时间的影响。因此，在评估绝经后女性的姿势平衡和设计干预研究时，应将一天中的不同时间视为一个需要控制的因素；对于这些女性来说，夜间要小心跌倒风险，因为她们在夜间比一天中的其他时间更不稳定。
