Rahimi Matthew M, Vakulin Andrew, Catcheside Peter G
Flinders Health and Medical Research Institute: Sleep Health, (formerly Adelaide Institute for Sleep Health), College of Medicine and Public Health, Flinders University, Bedford Park, South Australia, Australia.
Woolcock Institute of Medical Research, Sydney, New South Wales, Australia.
J Sleep Res. 2025 Aug;34(4):e14410. doi: 10.1111/jsr.14410. Epub 2024 Nov 28.
It is unclear to what extent posture shifts during sleep are associated with prior arousal and full awakening, and if supine-avoidance alarms to discourage supine sleep promote more extended wake following supine alarms. Thus, this study sought to examine relationships between posture shifts, arousals and awakenings, and to establish if a vibro-tactile supine-avoidance alarm delays the return to sleep following supine posture shifts. Detailed posture shift and sleep data from a chest-worn device with an inactive or active supine-avoidance alarm, and in-home sleep study data were from 37 participants who completed a randomised controlled trial of supine-avoidance device treatment for supine-predominant obstructive sleep apnea. Posture shifts, sleep, arousal and awakening responses, and sleep onset latency following posture shifts were compared between baseline and supine-avoidance treatment nights. Compared to baseline, there was a marked reduction in overnight supine time with active supine-avoidance treatment. Around 90% of posture shifts were preceded by either wake, arousal or full awakening. Sleep onset latency was longer for posture shifts occurring from prior wake compared to those from prior sleep but was not different between baseline or supine-avoidance treatment nights or between shifts from non-supine to supine or vice-versa. Most overnight posture shifts are associated with either prior wake or brief arousal, which likely facilitates co-ordinated body movements needed for effective posture shifts. Thus, sleep is typically already interrupted around the time that supine-avoidance alarms are activated, and the alarm itself does not significantly delay the return to sleep.
睡眠期间体位变化与先前的觉醒及完全清醒之间的关联程度尚不清楚，以及避免仰卧的警报是否会促使仰卧警报后出现更长时间的清醒。因此，本研究旨在探讨体位变化、觉醒和清醒之间的关系，并确定振动触觉式避免仰卧警报是否会延迟仰卧体位变化后重新入睡的时间。来自佩戴在胸部的设备（带有非活动或活动的避免仰卧警报）的详细体位变化和睡眠数据，以及家庭睡眠研究数据，来自37名参与者，他们完成了一项针对以仰卧为主的阻塞性睡眠呼吸暂停的避免仰卧设备治疗的随机对照试验。比较了基线和避免仰卧治疗夜间的体位变化、睡眠、觉醒和清醒反应，以及体位变化后的入睡潜伏期。与基线相比，活动式避免仰卧治疗使夜间仰卧时间显著减少。约90%的体位变化之前伴有觉醒、唤醒或完全清醒。与先前睡眠导致的体位变化相比，先前觉醒导致的体位变化入睡潜伏期更长，但在基线或避免仰卧治疗夜间之间，以及在从非仰卧到仰卧或反之的体位变化之间没有差异。大多数夜间体位变化与先前的觉醒或短暂唤醒有关，这可能有助于有效体位变化所需的协调身体运动。因此，在激活避免仰卧警报时，睡眠通常已经被打断，警报本身并不会显著延迟重新入睡的时间。
