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Related Concept Videos

Pharmacodynamics in Geriatric Patients: Effects of Age01:27

Pharmacodynamics in Geriatric Patients: Effects of Age

Age-related pharmacokinetic changes are extensively documented, but understanding age-related pharmacodynamic alterations is relatively limited. This knowledge gap can be partly attributed to the complexity of developing appropriate measures of drug responses compared to bioanalytical methods for determining drug concentrations.Most information regarding age-related differences in human pharmacodynamics originates from cross-sectional studies. However, these studies assume that observed mean...
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Related Experiment Video

Updated: Jul 16, 2026

Human Circadian Phenotyping and Diurnal Performance Testing in the Real World
10:16

Human Circadian Phenotyping and Diurnal Performance Testing in the Real World

Published on: April 7, 2020

Daytime sleepiness, exercise, and physical function in older adults.

Eileen R Chasens1, Susan M Sereika, Terri E Weaver

  • 1School of Nursing, University of Pittsburgh, Pittsburgh, PA 15261, USA. chasense@pitt.edu

Journal of Sleep Research
|February 21, 2007
PubMed
Summary

Daytime sleepiness in older adults is linked to less exercise and poorer physical function. This suggests sleepiness impacts mobility and warrants attention for maintaining health in seniors.

Related Experiment Videos

Last Updated: Jul 16, 2026

Human Circadian Phenotyping and Diurnal Performance Testing in the Real World
10:16

Human Circadian Phenotyping and Diurnal Performance Testing in the Real World

Published on: April 7, 2020

Area of Science:

  • Gerontology
  • Sleep Medicine
  • Public Health

Background:

  • Daytime sleepiness is a common complaint among older adults.
  • Its impact on physical function and exercise habits requires further investigation.

Purpose of the Study:

  • To examine the association between daytime sleepiness, exercise frequency, and physical function in older adults.
  • To test the hypothesis that sleepiness predicts reduced exercise and impaired physical function.

Main Methods:

  • Secondary analysis of the National Sleep Foundation's Sleep in America Poll data.
  • Telephone survey of 1506 community-dwelling older Americans (55-84 years).
  • Sleepiness, exercise frequency, and physical function (ability to perform tasks like walking, climbing stairs) were assessed.

Main Results:

  • Daytime sleepiness was associated with lower exercise frequency, even after controlling for age and BMI (OR = 1.40, P = 0.031).
  • Frequent daytime sleepiness significantly predicted impaired physical function (OR = 2.76, P = 0.001) after adjusting for age, BMI, income, and comorbidities.
  • Sleepiness was identified as a predictor of decreased physical activity and functional limitations.

Conclusions:

  • Daytime sleepiness in older adults is significantly associated with reduced exercise and impaired physical function.
  • Sleepiness is not a benign symptom in older populations and may contribute to physical decline.
  • Addressing sleepiness may be crucial for maintaining physical health and independence in aging individuals.