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Comparison of Motionlogger Watch and Actiwatch actigraphs to polysomnography for sleep/wake estimation in healthy young adults

机译:在健康的年轻人中,将Motionlogger Watch和Actiwatch记录仪与多导睡眠图进行睡眠/苏醒估计的比较

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Sleep/wake identification and sleep parameter estimates from Motionlogger Watch and Actiwatch-64 actigraphs were compared to polysomnography (PSG). Following one night of baseline sleep, 29 volunteers remained awake for 36 h, followed by 11 h of recovery sleep in the laboratory. Two sets of analyses were performed: (1) epoch-by-epoch agreement and discriminability index (d') calculations, and (2) sleep parameter concordance with repeated measures ANOVAs. Sensitivity (sleep identification), specificity (wake detection), and overall agreement with PSG, as well as d', were higher for the Motionlogger than for Actiwatch. Relative to PSG, the Actiwatch-estimated total sleep time and sleep efficiency were underestimated and the number of awakenings was overestimated for baseline and recovery; sleep latency was underestimated on the baseline night. On the other hand, the Motionlogger-estimated total sleep time and sleep efficiency estimates were underestimated, and the sleep latency was overestimated on recovery, versus PSG. Despite these misestimations, it was concluded that the Motionlogger provided nominally better agreement with PSG, and that actigraphy generally constitutes a reasonably reliable tool for producing objective measurements of sleep/wake, but that users should remain mindful of its limitations.
机译:将Motionlogger Watch和Actiwatch-64人体活动记录仪的睡眠/唤醒识别和睡眠参数估计值与多导睡眠图(PSG)进行了比较。在基准睡眠一晚后,29名志愿者保持清醒36小时,随后在实验室恢复睡眠11小时。进行了两组分析:(1)逐时一致性和可辨别性指数(d')计算,以及(2)睡眠参数与重复测量方差分析的一致性。 Motionlogger的灵敏度(睡眠识别),专一性(唤醒检测),与PSG的总体一致性以及d'高于Actiwatch。相对于PSG,Actiwatch估计的总睡眠时间和睡眠效率被低估了,而基线和恢复的觉醒次数被高估了;在基准夜晚,睡眠潜伏期被低估了。另一方面,与PSG相比,Motionlogger估计的总睡眠时间和睡眠效率估计被低估了,而恢复时的睡眠等待时间被高估了。尽管有这些错误的估计,但可以得出结论,Motionlogger在名义上与PSG提供了更好的一致性,并且书法通常构成用于产生客观睡眠/觉醒测量结果的相当可靠的工具,但用户应注意其局限性。

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