Late circadian phase in adults and children is correlated with use of high color temperature light at home at night
Late circadian phase in adults and children is correlated with use of high color temperature light at home at night
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DOI：
10.3109/07420528.2016.1152978
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发表时间：
2016-01-01
影响因子：
2.8
通讯作者：
Tanaka, Ikuo
中科院分区：
文献类型：
--
作者：
Higuchi, Shigekazu;Lee, Sang-il;Tanaka, Ikuo
光是人类昼夜节律最强的同步器，据报道，夜间暴露在住宅灯光下会导致昼夜节律延迟。本研究旨在调查家庭光色温与成人和儿童唾液褪黑激素昼夜节律阶段之间的关联。 20名健康儿童（平均年龄：9.7岁）及其17名家长（平均年龄：41.9岁）参与了实验。昼夜节律阶段评估是通过弱光褪黑激素启动（DLMO）进行的。成人和儿童的 DLMO 存在很大的个体差异。成人和儿童的平均 DLMO 分别为 21: 50 +/- 1: 12 和 20: 55 +/- 0: 44。眼睛水平光的平均照度和色温分别为 139.6 +/- 82.7 lx 和 3862.0 +/- 965.6 K。成人（r = 0.735，p < 0.01）和儿童（r = 0.479，p < 0.05）的光色温与 DLMO 之间存在显着相关性，但照度水平与 DLMO 之间没有发现显着相关性。结果表明，家中的高色温光可能是成人和儿童昼夜节律延迟的原因。
Light is the strongest synchronizer of human circadian rhythms, and exposure to residential light at night reportedly causes a delay of circadian rhythms. The present study was conducted to investigate the association between color temperature of light at home and circadian phase of salivary melatonin in adults and children. Twenty healthy children ( mean age: 9.7 year) and 17 of their parents ( mean age: 41.9 years) participated in the experiment. Circadian phase assessments were made with dim light melatonin onset ( DLMO). There were large individual variations in DLMO both in adults and children. The average DLMO in adults and in children were 21: 50 +/- 1: 12 and 20: 55 +/- 0: 44, respectively. The average illuminance and color temperature of light at eye level were 139.6 +/- 82.7 lx and 3862.0 +/- 965.6 K, respectively. There were significant correlations between color temperature of light and DLMO in adults ( r = 0.735, p < 0.01) and children ( r = 0.479, p < 0.05), although no significant correlations were found between illuminance level and DLMO. The results suggest that high color temperature light at home might be a cause of the delay of circadian phase in adults and children.