Relationship between individual difference in melatonin suppression by light and habitual bedtime

Shigekazu Higuchi, Yutaka Motohashi, Takafumi Maeda, Keita Ishibashi

研究成果: Contribution to journalArticle査読

24 被引用数 (Scopus)

抄録

The purpose of this study was to determine the relationship between individual difference in melatonin suppression by exposure to light and habitual bedtime. Seventeen healthy male students (mean age: 22.6±2.4yr) volunteered to participate in the study. The subjects were exposed to light (1000 1x) for 2 hours from 2 hours before the time of peak salivary melatonin concentration. Two hours after exposure to the light, melatonin suppression had occurred in fifteen subjects. No significant correlation was found between the rate of melatonin suppression and habitual bedtime in the fifteen subjects in whom melatonin suppression occurred. However, the habitual bedtime of the two subjects in whom melatonin suppression did not occur was earlier than that of the other subjects. These results suggest that there are some people with very low sensitivity to light and that this may affect habitual bedtime.

本文言語英語
ページ(範囲)419-423
ページ数5
ジャーナルJournal of physiological anthropology and applied human science
24
4
DOI
出版ステータス出版済み - 7 2005
外部発表はい

All Science Journal Classification (ASJC) codes

  • 社会科学(全般)

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