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The influence of baseline sleep on exercise‐induced cognitive change in cognitively unimpaired older adults A randomised clinical trial453.64 kB
Published (Version of Record)CC BY-NC V4.0, Open Access
Journal article
The influence of baseline sleep on exercise‐induced cognitive change in cognitively unimpaired older adults: A randomised clinical trial
International Journal of Geriatric Psychiatry, Vol.38(10), e6016
2023
Appears in Open Access via Read & Publish Agreements
Abstract
Objectives
Observational studies consistently demonstrate that physical activity is associated with elevated cognitive function, however, there remains significant heterogeneity in cognitive outcomes from randomized exercise interventions. Individual variation in sleep behaviours may be a source of variability in the effectiveness of exercise-induced cognitive change, however this has not yet been investigated. The current study aimed to (1) investigate the influence of a 6-month exercise intervention on sleep, assessed pre- and post-intervention and, (2) investigate whether baseline sleep measures moderate exercise-induced cognitive changes.
Methods
We utilised data from the Intense Physical Activity and Cognition (IPAC) study (n = 89), a 6-month moderate intensity and high intensity exercise intervention, in cognitively unimpaired community-dwelling older adults aged 60–80 (68.76 ± 5.32). Exercise was supervised and completed on a stationary exercise bicycle, and cognitive function was measured using a comprehensive neuropsychological battery administered pre- and post-intervention. Sleep was measured using the Pittsburgh sleep quality index. There was no effect of the exercise intervention on any sleep outcomes from pre- to post-intervention.
Results
There was a significant moderating effect of baseline sleep efficiency on both episodic memory and global cognition within the moderate intensity exercise group, such that those with poorer sleep efficiency at baseline showed greater exercise-induced improvements in episodic memory.
Conclusions
These results suggest that those with poorer sleep may have the greatest exercise-induced cognitive benefits and that baseline sleep behaviours may be an important source of heterogeneity in previous exercise interventions targeting cognitive outcomes.
Details
- Title
- The influence of baseline sleep on exercise‐induced cognitive change in cognitively unimpaired older adults: A randomised clinical trial
- Authors/Creators
- Kelsey R Sewell - Centre for Healthy Ageing Health Futures Institute Murdoch University Murdoch Western Australia AustraliaStephanie R Rainey-Smith - Centre for Healthy Ageing Health Futures Institute Murdoch University Murdoch Western Australia Australia, School of Medical and Health Sciences Edith Cowan University Joondalup Western Australia Australia, Australian Alzheimer's Research Foundation Sarich Neuroscience Research Institute Nedlands Western Australia Australia, School of Psychological Science University of Western Australia Crawley Western Australia AustraliaJeremiah J Peiffer - Centre for Healthy Ageing Health Futures Institute Murdoch University Murdoch Western Australia AustraliaHamid SohrabiJames Doecke - Royal Brisbane and Women's Hospital CSIRO Health and Biosecurity/Australian E‐Health Research Centre Brisbane Queensland AustraliaNatalie J. Frost - Centre for Healthy Ageing Health Futures Institute Murdoch University Murdoch Western Australia Australia, Australian Alzheimer's Research Foundation Sarich Neuroscience Research Institute Nedlands Western Australia Australia, School of Psychological Science University of Western Australia Crawley Western Australia AustraliaShaun J Markovic - Centre for Healthy Ageing Health Futures Institute Murdoch University Murdoch Western Australia Australia, Australian Alzheimer's Research Foundation Sarich Neuroscience Research Institute Nedlands Western Australia AustraliaKirk I. Erickson - Department of Psychiatry University of Pittsburgh Pittsburgh Pennsylvania USA, AdventHealth Research Institute Orlando Florida USABelinda M Brown - Centre for Healthy Ageing Health Futures Institute Murdoch University Murdoch Western Australia Australia, School of Medical and Health Sciences Edith Cowan University Joondalup Western Australia Australia, Australian Alzheimer's Research Foundation Sarich Neuroscience Research Institute Nedlands Western Australia Australia
- Publication Details
- International Journal of Geriatric Psychiatry, Vol.38(10), e6016
- Publisher
- John Wiley & Sons Ltd.
- Identifiers
- 991005609666807891
- Copyright
- © 2023 The Authors
- Murdoch Affiliation
- School of Psychology; Research and Innovation Office; Centre for Healthy Ageing; Health Futures Institute; School of Allied Health
- Language
- English
- Resource Type
- Journal article
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