Article ; Online: Effects of pre-bedtime blue-light exposure on ratio of deep sleep in healthy young men.
2021 Volume 84, Page(s) 303–307
Abstract: This study aimed to investigate the effects of pre-bedtime blue-light exposure on ratio of deep sleep and sleep quality. In this study, 11 healthy young men were exposed to three conditions for 1 h before bedtime: 1) incandescent light, 2) blue-light, or ...
| Abstract | This study aimed to investigate the effects of pre-bedtime blue-light exposure on ratio of deep sleep and sleep quality. In this study, 11 healthy young men were exposed to three conditions for 1 h before bedtime: 1) incandescent light, 2) blue-light, or 3) blue light-blocking glasses on. The following morning, subjective sleep quality was measured using the Oguri-Shirakawa-Azumi Sleep Inventory. Sleep time, ratio of sleep, ratio of deep sleep, and body movements during sleep were measured using a mat sleep-scan (sleep scan, SL- 504; TANITA Corp., Japan) and an ambulatory portable sleep study system (LS-140; Fukuda Denshi Co. Ltd., Japan). Ratio of deep sleep was significantly decreased in the blue-light exposure group compared to the groups with incandescent light and blue light-blocking glasses (p < 0.01), There were no differences noted in sleep time or body movements among the three groups. These results suggest that blue-light exposure to affects sleep quality by reducing the ratio of deep sleep. |
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| MeSH term(s) | Circadian Rhythm ; Humans ; Light ; Male ; Sleep ; Sleep Disorders, Circadian Rhythm ; Sleep, Slow-Wave |
| Language | English |
| Publishing date | 2021-06-08 |
| Publishing country | Netherlands |
| Document type | Journal Article |
| ZDB-ID | 2012041-2 |
| ISSN | 1878-5506 ; 1389-9457 |
| ISSN (online) | 1878-5506 |
| ISSN | 1389-9457 |
| DOI | 10.1016/j.sleep.2021.05.046 |
| Database | MEDical Literature Analysis and Retrieval System OnLINE |
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