Impact of advance light exposure on assembly-line workers' subjective work alertness and sleep quality
Impact of advance light exposure on assembly-line workers' subjective work alertness and sleep quality
复制标题
提前光照对装配线工人主观工作警觉性和睡眠质量的影响
DOI：
10.1177/14771535221078763
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发表时间：
2022-07-15
影响因子：
2.5
通讯作者：
Yan, Y.
中科院分区：
文献类型：
--
作者：
He, S.;Yan, Y.
在没有窗户的工厂里，日照不足使装配线上的工人面临健康问题的风险。为了研究在清晨和午休时间提前接受光照是否有利于工人的工作效率和夜间睡眠，我们在一家工厂进行了一项受试者内实验。连续五个工作日，每天两次在工作前（8:30-9:00和12:00-12:30）提供四种实验性照明干预，涵盖两个光照水平（1440 lx vs. 70 lx），每个水平都有两个相关色温（cct） （5300 K vs. 3300 K），外加一个额外的基准暗曝光（4 lx）。每天测量参与者的主观警觉性和夜间睡眠时间，每周监测一次时间类型。结果表明，较高的照度与主观工作警觉性增加和睡眠效率提高相关，而较低的CCT则略微改善警觉性。两种提前强光照射下的主观工作警觉性和睡眠效率均高于暗光照射下的主观警觉性，且主观警觉性反应在下午比上午更明显。不同光照干预对睡眠时型无明显影响。目前的研究表明，每天工作前的提前光照可能会对参与者的警觉性和睡眠质量产生延迟效应。
Underexposure to daylight in windowless factories puts assembly-line workers at risk of health problems. To investigate whether the advance light exposure in the early morning and during the lunch break benefits workers' productivity and night-time sleep, a within-subject experiment was conducted in a factory. Four experimental lighting interventions were provided twice a day before work (8:30-9:00 and 12:00-12:30) for consecutive five workdays, covering two light levels (1440 lx vs. 70 lx), each with two correlated colour temperatures (CCTs) (5300 K vs. 3300 K), plus an additional benchmark dark exposure (4 lx). Participants' subjective alertness and night-time sleep were measured daily, and the chronotype was monitored once a week. Results showed that a higher illuminance was correlated with increased subjective work alertness and higher sleep efficiency, while a lower CCT slightly improved alertness. The subjective work alertness and sleep efficiency under the two advance bright light exposures were higher than those under the dark exposure, and the responses of subjective alertness were more pronounced in the afternoon than those in the morning. Yet, the chronotype had no evident change in different lighting interventions. The present study indicated that the daily advance light exposure before work could have a delayed effect on participants' alertness and sleep quality.