Factors involved in sleep satisfaction in the elderly

Area of Science:

• Gerontology
• Sleep Medicine
• Psychology

Background:

• Subjective reports of poor sleep are less common in healthy older adults than objective sleep impairments suggest.
• This discrepancy may stem from differing sleep satisfaction requirements between age groups.
• Age-related changes in sleep satisfaction predictors warrant investigation.

Purpose of the Study:

• To identify how predictors of sleep satisfaction change with age.
• To compare sleep characteristics and satisfaction determinants in elderly and young adults.

Main Methods:

• A pre-arranged interview assessed quantitative (latency, duration, awakenings) and qualitative (calmness, ease of sleep, satisfaction, awakening ease/freshness, sufficiency) sleep features.
• Afternoon nap habits were also recorded.
• Participants included 117 elderly (65-99 years) and 120 young (19-28 years) healthy adults.

Main Results:

• Quantitative sleep features declined with age, while qualitative features remained stable or improved, except for 'calmness of sleep'.
• Elderly subjects napped more, but this did not correlate with sleep satisfaction.
• Sleep satisfaction predictors differed: elderly valued 'freshness after awakening', while young adults prioritized 'frequency of night-time awakenings'.

Conclusions:

• Sleep satisfaction is maintained in healthy elderly individuals despite objective nocturnal sleep deterioration, possibly due to increased daytime napping.
• A spontaneous adaptive adjustment in sleep satisfaction determinants likely occurs in aging.
• Elderly individuals prioritize post-awakening freshness, unlike younger adults who focus on minimizing night-time awakenings.