O'Donnell Deirdre, Silva Edward J, Münch Mirjam, Ronda Joseph M, Wang Wei, Duffy Jeanne F
Division of Sleep Medicine, Brigham & Women's Hospital, Harvard Medical School, Boston, MA 02115, USA.
J Sleep Res. 2009 Jun;18(2):254-63. doi: 10.1111/j.1365-2869.2008.00719.x.
Older adults have reduced sleep quality compared with younger adults when sleeping at habitual times and greater sleep disruption when their sleep is at adverse times. The purpose of this analysis was to investigate how subjective measures of sleep relate to objectively recorded sleep in older subjects scheduled to sleep at all times of day. We analyzed data from 24 healthy older (55-74 years) subjects who took part in a 32-day inpatient study where polysomnography was recorded each night and subjective sleep was assessed after each scheduled wake time. The study included baseline nights and a forced desynchrony (FD) protocol when the subjects lived on a 20-h rest activity schedule. Our postsleep questionnaire both included quantitative and qualitative questions about the prior sleep. Under baseline and FD conditions, objective and subjective sleep latency were correlated, subjective sleep duration was related to slow-wave sleep and wake after sleep onset, subjective sleep quality was related to stage 1 and 2 sleep, and sleepiness and refreshment at wake time were related to duration of premature awakening. During FD, most measures of objective and subjective sleep varied with circadian phase and many additional correlations between objective and subjective sleep were present. Our findings show that when sleeping at habitual times, these healthy older subjects did not perceive their generally poor sleep quality, but under FD conditions where sleep quality changed from day-to-day their subjective sleep ratings were more associated with their objective sleep.
与年轻人相比，老年人在习惯时间睡眠时睡眠质量会下降，而在不利时间睡眠时睡眠干扰会更大。本分析的目的是研究在一天中所有时间安排睡眠的老年受试者中，睡眠的主观测量指标与客观记录的睡眠之间的关系。我们分析了24名健康老年人（55 - 74岁）的数据，这些受试者参与了一项为期32天的住院研究，每晚记录多导睡眠图，并在每次预定的起床时间后评估主观睡眠情况。该研究包括基线夜晚以及受试者按照20小时休息 - 活动时间表生活的强制去同步化（FD）方案。我们的睡眠后问卷既包括关于前一晚睡眠的定量问题，也包括定性问题。在基线和FD条件下，客观和主观睡眠潜伏期相关，主观睡眠时间与慢波睡眠和睡眠开始后的觉醒相关，主观睡眠质量与1期和2期睡眠相关，起床时的困倦感和恢复感与过早觉醒的持续时间相关。在FD期间，客观和主观睡眠的大多数测量指标随昼夜节律相位而变化，并且客观和主观睡眠之间还存在许多其他相关性。我们的研究结果表明，在习惯时间睡眠时，这些健康的老年受试者并未察觉到他们总体较差的睡眠质量，但在FD条件下，睡眠质量每天都发生变化，他们的主观睡眠评分与客观睡眠的相关性更强。
