Indoor exposure to natural bright light prevents afternoon sleepiness
Indoor exposure to natural bright light prevents afternoon sleepiness
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DOI：
10.1093/sleep/29.4.462
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发表时间：
2006-04-01
期刊：
影响因子：
5.6
通讯作者：
Nakata, A
中科院分区：
文献类型：
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作者：
Kaida, K;Takahashi, M;Nakata, A
研究目的：本研究探讨了室内自然强光对午后困倦的影响。设计：被试参与了3个实验条件：（1）自然强光条件下，在窗户附近进行筛选的操作和唤醒测试（3260.0 +/- 1812.43 lux），（2）午睡条件，其中从12：40 PM到1：10 PM向他们提供午睡机会20分钟，45 Pm，和（3）对照条件，其中他们在小于100 lux的环境中从12：40 Pm至1：10 Pm进行测试。在每次治疗之前和之后，进行相同系列的测试。设置：温度和光线控制的睡眠实验室。参与者：16名健康女性，年龄33至43岁（38.1 +/- 2.68）岁。干预措施：室内自然明亮的光线和短暂的小睡。测量和结果：唤醒水平通过精神警觉任务、阿尔法衰减测试、卡罗林斯卡嗜睡测试和卡罗林斯卡嗜睡量表测量。从上午11：00到下午4：10，每30分钟重复一次测试。环境光强度保持在小于100勒克斯，除了在自然强光暴露期间。短期暴露在自然明亮的光线下可以显著改善下午的唤醒水平，这是由卡罗林斯卡嗜睡测试和阿尔法衰减测试测量的，其效果持续至少60分钟（下午1：10-2：10）。然而，没有显着差异，观察条件之间的Psychological Vigilance Test performance.Conclusions：短暂的室内暴露于自然明亮的光线可能会减少下午嗜睡。这种光技术可以用于不允许午睡的工作环境中。
Study Objectives: The present study examined the effects of indoor exposure to natural bright light on afternoon sleepiness.Design: Participants took part in 3 experimental conditions: (1) a natural bright light condition in which they carried out performance and arousal tests sifting near a window (3260.0 +/- 1812.43 lux) from 12:40 PM to 1:10 Pm, (2) a nap condition in which they were provided a nap opportunity for 20 minutes from 12:45 Pm, and (3) a control condition in which they performed the tests in less than 100 lux surroundings from 12:40 Pm to 1:10 Pm. Before and after each treatment, the same series of tests were administered.Setting: A temperature- and light-controlled sleep laboratory.Participants: Sixteen healthy female paid volunteers aged 33 to 43 (38.1 +/- 2.68) years.Interventions: Indoor natural bright light and a short nap.Measurements and Results: Arousal levels were measured by the Psychomotor Vigilance Task, Alpha Attenuation Test, Karolinska Drowsiness Test, and Karolinska Sleepiness Scale. The tests were repeated every 30 minutes from 11:00 AM to 4:10 Pm. Ambient light intensity was maintained at less than 100 lux, except during natural bright light exposure. Short-term exposure to natural bright light significantly improved afternoon arousal levels, as measured by the Karolinska Drowsiness Test and Alpha Attenuation Test, the effects of which continued for at least 60 minutes (1:10-2:10 PM). However, no significant differences were observed between conditions for Psychomotor Vigilance Test performance.Conclusions: Brief indoor exposure to natural bright light may decrease afternoon sleepiness. This technique of light could be used in work settings in which napping is not permitted.