The impact of daytime light exposures on sleep and mood in office workers
The impact of daytime light exposures on sleep and mood in office workers
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DOI：
10.1016/j.sleh.2017.03.005
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发表时间：
2017-06-01
期刊：
影响因子：
4.1
通讯作者：
Rea, Mark S.
中科院分区：
文献类型：
--
作者：
Figueiro, Mariana G.;Steverson, Bryan;Rea, Mark S.
背景资料：通过影响大脑的内部计时机制，光调节人类的生理和行为，也许最值得注意的是睡眠-觉醒周期。人类90%以上的醒着时间都在室内度过，然而建筑环境中的光线并没有被设计成影响昼夜节律。目的：使用一种校准的设备来测量对昼夜节律系统有效的光线（昼夜效应光），收集办公室工作人员的个人光暴露，并将其与他们的睡眠和情绪联系起来。设置：本研究在美国总务管理局管理的5栋建筑中进行。参与者：本研究招募了109名参与者（69名女性），其中81名（54名女性）参加了冬季和夏季的研究。连续7天收集自我报告的情绪和睡眠测量值以及昼夜有效光照和活动节律的客观测量值。与早晨接受低水平昼夜节律有效光的办公室工作人员相比，早晨接受高水平的昼夜节律有效光与睡眠开始潜伏期减少（特别是在冬季），相量幅度增加（昼夜节律夹带的测量）和睡眠质量增加有关。高水平的昼夜节律有效的光在整个白天也与相量幅度增加，减少抑郁症，增加睡眠quality.Conclusions：本研究是第一个测量个人的光暴露在办公室工作人员使用校准设备，测量昼夜节律有效的光，并将这些光的措施，情绪，压力和睡眠。这项研究的结果强调了白天光线暴露对睡眠健康的重要性。(C)2017全国睡眠基金会。爱思唯尔公司出版All rights reserved.
Background: By affecting the internal timing mechanisms of the brain, light regulates human physiology and behavior, perhaps most notably the sleep-wake cycle. Humans spend over 90% of their waking hours indoors, yet light in the built environment is not designed to affect circadian rhythms.Objective: Using a device calibrated to measure light that is effective for the circadian system (circadian-effective light), collect personal light exposures in office workers and relate them to their sleep and mood.Setting: The research was conducted in 5 buildings managed by the US General Services Administration.Participants: This study recruited 109 participants (69 females), of whom 81 (54 females) participated in both winter and summer.Measurements: Self-reported measures of mood and sleep, and objective measures of circadian-effective light and activity rhythms were collected for 7 consecutive days.Results: Compared to office workers receiving low levels of circadian-effective light in the morning, receiving high levels in the morning is associated with reduced sleep onset latency (especially in winter), increased phasor magnitudes (a measure of circadian entrainment), and increased sleep quality. High levels of circadian-effective light during the entire day are also associated with increased phasor magnitudes, reduced depression, and increased sleep quality.Conclusions: The present study is the first to measure personal light exposures in office workers using a calibrated device that measures circadian-effective light and relate those light measures to mood, stress, and sleep. The study's results underscore the importance of daytime light exposures for sleep health. (C) 2017 National Sleep Foundation. Published by Elsevier Inc. All rights reserved.