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24-hour sleep/wake patterns in healthy elderly persons

B D Evans1, A E Rogers

  • 1Rochester General Hospital, NY.

Applied Nursing Research : ANR
|May 1, 1994
PubMed
Summary

Healthy elderly individuals spend over 7.5 hours in bed but achieve just over 6 hours of sleep, experiencing fragmented sleep. Daytime naps are common but contribute minimally to overall sleep duration.

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Area of Science:

  • Gerontology
  • Sleep Medicine
  • Chronobiology

Background:

  • Aging is associated with changes in sleep patterns.
  • Understanding sleep architecture in healthy elderly individuals is crucial for maintaining well-being.
  • Previous research indicates potential alterations in sleep duration and continuity with advancing age.

Purpose of the Study:

  • To investigate the 24-hour sleep/wake patterns in healthy elderly individuals.
  • To quantify sleep duration, sleep efficiency, and wake after sleep onset in this population.
  • To analyze the role and duration of daytime napping in the overall sleep profile of older adults.

Main Methods:

  • Utilized wrist actigraphy for objective sleep monitoring over 48 hours.
  • Employed activity diaries for subjective sleep and wakefulness reporting.
  • Included 14 healthy elderly participants in the study.

Main Results:

  • Participants averaged over 7.5 hours in bed nightly, with actual sleep duration exceeding 6 hours.
  • Sleep fragmentation was evident, characterized by difficulty maintaining sleep after onset.
  • All participants napped during the day, averaging approximately 60 minutes, but this constituted a small portion of total sleep time.

Conclusions:

  • Healthy elderly individuals experience fragmented sleep, despite adequate time in bed.
  • Difficulty remaining asleep, rather than initiating sleep, is a key characteristic of sleep patterns in this age group.
  • Daytime napping is a common compensatory behavior but does not fully offset nighttime sleep deficits.

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