Elderly people often have naps that are not subjectively recognized as naps

Akira Usui, Yoshikazu Ishizuka, Mayo Hachuda, Takamasa Noda, Shigenobu Kanba

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Fourteen elderly people (mean age 73.8 years) kept a sleep log for 4–7 days, and their wrist-activity was monitored simultaneously. Their sleep onset and wake-up times, assessed by using actigraphy, were 21:04 and 05:51 hours, respectively, and these were advanced compared with young adults (00:45 and 07:34 hours, respectively). Elderly people often had naps actigraphically in the afternoon. There were marked discrepancies between the actigraphic sleep-wake state and sleep log in the afternoon and evening. Our observation implies that elderly people often have naps that are not subjectively recognized as naps. To rouse elderly people from a sleepy state, countermeasures such as improvement of the light environment and short-time naps are recommended.

Original languageEnglish
Pages (from-to)141-142
Number of pages2
JournalSleep and Biological Rhythms
Volume1
Issue number2
DOIs
Publication statusPublished - Mar 1 2003
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physiology
  • Physiology (medical)
  • Neurology
  • Neuropsychology and Physiological Psychology

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