Effects of morning bright light in healthy elderly women: Effects on wrist activity

To investigate the effects of 8000 lux morning bright light in the elderly, home‐based motor activity on sleep was monitored for 5 days in 10 healthy women (mean age: 59.7 years old, range: 50–69 years old). The activity level and movement index on night 4 were significantly lower in bright light co...

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Bibliographic Details
Published in:Psychiatry and clinical neurosciences 1999-04, Vol.53 (2), p.235-236
Main Authors: Sakakibara, Satoshi, Kohsaka, Masako, Kobayashi, Riko, Honma, Hiroshi, Fukuda, Noriko, Koyama, Tsukasa
Format: Article
Language:English
Subjects:
actigraph
activity
Aged
Aging - psychology
Arousal
bright light
Circadian Rhythm
elderly
Female
Humans
Middle Aged
Motor Activity
Phototherapy
sleep
Sleep Stages
Wakefulness
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Summary:To investigate the effects of 8000 lux morning bright light in the elderly, home‐based motor activity on sleep was monitored for 5 days in 10 healthy women (mean age: 59.7 years old, range: 50–69 years old). The activity level and movement index on night 4 were significantly lower in bright light conditions, compared with the controlled condition. The activity level during the day was not significantly different between the two conditions. These results indicate that 8000 lux morning bright light improves sleep quality in healthy elderly women.
ISSN:1323-1316
1440-1819
DOI:10.1046/j.1440-1819.1999.00485.x