The Effects of Pre-bedtime Blue-Light Exposure on Subjective Sleep Quality, Attention, and Work Efficiency in Men Students: A Pilot Study

Background Although exposure to blue light in the evening has been shown to affect sleep, its effects on alertness and work efficiency the next day are not fully understood. Objective This study aimed to investigate the effects of pre-bedtime blue-light exposure on subjective sleep quality, attentio...

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Bibliographic Details
Published in:Sleep and vigilance 2024-12, Vol.8 (2), p.215-221
Main Authors: Uchiumi, Takuya, Ishizawa, Masao, Takahata, Miki, Yamaki, Michiyasu, Sato, Toshiaki
Format: Article
Language:English
Subjects:
Biomedical and Life Sciences
Biomedicine
Body mass index
Caffeine
Efficiency
Exercise
Gender differences
Humidity
Medical research
Medicine/Public Health
Melatonin
Neurology
Neurosciences
Occupational therapy
Original Article
Physical fitness
Psychiatry
Quality of life
Sleep disorders
Students
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Summary:Background Although exposure to blue light in the evening has been shown to affect sleep, its effects on alertness and work efficiency the next day are not fully understood. Objective This study aimed to investigate the effects of pre-bedtime blue-light exposure on subjective sleep quality, attention, and work efficiency. Methods Thirteen young men (aged 20–23 years) without sleep disorders participated in two sessions, in which they were exposed to either incandescent light or blue light 1 h before bedtime. On the next morning, participants underwent assessments of subjective sleep quality, attention, and work efficiency. Objective parameters during sleep were measured using a mat-type sleep meter (sleep scan, SL- 504; TANITA Corp., Japan). Results Blue-light exposure significantly decreased the ratio of time spent in deep sleep ( p  
ISSN:2510-2265
2510-2265
DOI:10.1007/s41782-024-00276-5