Related Experiment Video
Updated: May 28, 2026

Assessment of Dependence in Activities of Daily Living Among Older Patients in an Acute Care Unit
Published on: September 30, 2020
Association of Long Sleep and Physical Inactivity With Incident Disability in Community-Dwelling Older Adults: A
Sho Nakakubo1,2, Takehiko Doi2,3, Kota Tsutsumimoto2
1Digital Health Research Team, Center for Gerontology and Social Science, National Center for Geriatrics and Gerontology, Obu, Japan.
Abstract:
ObjectivesThis study examined whether sleep duration and physical inactivity were associated with incident disability among community-dwelling older adults.MethodsA total of 4,372 adults aged ≥70 years participated in a baseline assessment. We assessed self-reported sleep duration and physical activity using the International Physical Activity Questionnaire - Short Form. We measured monthly incident disability over 5 years.ResultsThe Cox proportional hazards regression analysis showed long sleep duration (≥9 h, HR 1.32, 95% CI 1.05-1.67) and physical inactivity (HR 1.33, 95% CI 1.13-1.57) were associated with incident disability in multivariate analyses. Coexistence of long sleep duration and physical inactivity had higher risk of incident disability than each factor individually (HR 1.69, 95% CI 1.11-2.58), even though the synergistic interaction was mildly effective.DiscussionThis study demonstrated that long sleep duration and physical inactivity were independently associated with the risk of incident disability among older adults.
Related Concept Videos
Insufficient Sleep and Sleep Deprivation
Sleep deprivation is a more severe form of sleep loss...
Longitudinal Research
Substance Use Disorders Affecting Sleep
Understanding the concepts of physical dependence,...
Sleep Apnea
The condition is more prevalent among...
Lifestyle Factors and Health
Benefits of Physical Activity
Physical activity, whether through structured exercise or casual activities like walking, biking, or dancing, is a cornerstone of a...

