CITIC-TALIONIS Group, Elviña Campus, Universidade da Coruña (University of A Coruña), A Coruña, Spain.
Faculty of Health Sciences, Oza Campus, Universidade da Coruña (University of A Coruña), A Coruña, Spain.
J Med Internet Res. 2023 May 19;25:e42073. doi: 10.2196/42073.
Polysomnography is the gold standard for measuring and detecting sleep patterns. In recent years, activity wristbands have become popular because they record continuous data in real time. Hence, comprehensive validation studies are needed to analyze the performance and reliability of these devices in the recording of sleep parameters.
This study compared the performance of one of the best-selling activity wristbands, the Xiaomi Mi Band 5, against polysomnography in measuring sleep stages.
This study was carried out at a hospital in A Coruña, Spain. People who were participating in a polysomnography study at a sleep unit were recruited to wear a Xiaomi Mi Band 5 simultaneously for 1 night. The total sample consisted of 45 adults, 25 (56%) with sleep disorders (SDis) and 20 (44%) without SDis.
Overall, the Xiaomi Mi Band 5 displayed 78% accuracy, 89% sensitivity, 35% specificity, and a Cohen κ value of 0.22. It significantly overestimated polysomnography total sleep time (P=.09), light sleep (N1+N2 stages of non-rapid eye movement [REM] sleep; P=.005), and deep sleep (N3 stage of non-REM sleep; P=.01). In addition, it underestimated polysomnography wake after sleep onset and REM sleep. Moreover, the Xiaomi Mi Band 5 performed better in people without sleep problems than in those with sleep problems, specifically in detecting total sleep time and deep sleep.
The Xiaomi Mi Band 5 can be potentially used to monitor sleep and to detect changes in sleep patterns, especially for people without sleep problems. However, additional studies are necessary with this activity wristband in people with different types of SDis.
ClinicalTrials.gov NCT04568408; https://clinicaltrials.gov/ct2/show/NCT04568408.
INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID): RR2-10.3390/ijerph18031106.
多导睡眠图是测量和检测睡眠模式的金标准。近年来，活动手环因其能够实时记录连续数据而变得流行。因此，需要进行全面的验证研究，以分析这些设备在记录睡眠参数方面的性能和可靠性。
本研究比较了最畅销的活动手环之一小米手环 5 在测量睡眠阶段方面与多导睡眠图的性能。
该研究在西班牙拉科鲁尼亚的一家医院进行。招募正在睡眠单位进行多导睡眠图研究的人同时佩戴小米手环 5 一夜。总样本包括 45 名成年人，25 名（56%）有睡眠障碍（SDis），20 名（44%）无 SDis。
总体而言，小米手环 5 的准确率为 78%，灵敏度为 89%，特异性为 35%，Cohen κ 值为 0.22。它显著高估了多导睡眠图的总睡眠时间（P=.09）、轻度睡眠（非快速眼动 [REM] 睡眠的 N1+N2 阶段；P=.005）和深度睡眠（非 REM 睡眠的 N3 阶段；P=.01）。此外，它低估了多导睡眠图的睡眠后觉醒和 REM 睡眠。此外，小米手环 5 在无睡眠问题的人群中的表现优于有睡眠问题的人群，特别是在检测总睡眠时间和深度睡眠时间方面。
小米手环 5 可用于监测睡眠并检测睡眠模式的变化，尤其是对于无睡眠问题的人群。然而，在有不同类型 SDis 的人群中，还需要使用这种活动手环进行更多的研究。
ClinicalTrials.gov NCT04568408；https://clinicaltrials.gov/ct2/show/NCT04568408。
国际注册报告标识符（IRRID）：RR2-10.3390/ijerph18031106。
