The effect of acute exercise on objectively measured sleep and cognition in older adults

Frontiers in Psychology

Psychology

Kelsey R. Sewell¹  Jeremiah Peiffer¹  Nathan D. W. Smith¹  Belinda M. Brown²  Hamid R. Sohrabi³  Stephanie R. Rainey-Smith⁴  Kirk I. Erickson⁵ 

[1] Centre for Healthy Ageing, Health Futures Institute, Murdoch University, Murdoch, WA, Australia;Centre for Healthy Ageing, Health Futures Institute, Murdoch University, Murdoch, WA, Australia;School of Medical and Health Sciences, Edith Cowan University, Joondalup, WA, Australia;Australian Alzheimer’s Research Foundation, Sarich Neuroscience Research Institute, Nedlands, WA, Australia;Centre for Healthy Ageing, Health Futures Institute, Murdoch University, Murdoch, WA, Australia;School of Medical and Health Sciences, Edith Cowan University, Joondalup, WA, Australia;Australian Alzheimer’s Research Foundation, Sarich Neuroscience Research Institute, Nedlands, WA, Australia;Department of Biomedical Sciences, Macquarie University, Sydney, NSW, Australia;Centre for Healthy Ageing, Health Futures Institute, Murdoch University, Murdoch, WA, Australia;School of Medical and Health Sciences, Edith Cowan University, Joondalup, WA, Australia;Australian Alzheimer’s Research Foundation, Sarich Neuroscience Research Institute, Nedlands, WA, Australia;School of Psychological Science, University of Western Australia, Perth, WA, Australia;Department of Psychology, University of Pittsburgh, Pittsburgh, PA, United States;PROFITH “PROmoting FITness and Health Through Physical Activity” Research Group, Department of Physical and Sports Education, Faculty of Sport Sciences, Sport and Health University Research Institute (iMUDS), University of Granada, Granada, Spain;AdventHealth Research Institute, Orlando, FL, United States;

关键词: exercise;    cognition;    sleep;    older adults;    high intensity;   

DOI  :  10.3389/fpsyg.2023.1207199

 received in 2023-04-17, accepted in 2023-09-18,  发布年份 2023

来源: Frontiers

【 摘 要 】

BackgroundExercise can improve cognition in aging, however it is unclear how exercise influences cognition, and sleep may partially explain this association. The current study aimed to investigate whether objectively measured sleep mediates the effect of an acute exercise intervention on cognition in older adults.MethodsParticipants were 30 cognitively unimpaired, physically active older adults (69.2 ± 4.3 years) with poor sleep (determined via self-report). After a triple baseline cognitive assessment to account for any natural fluctuation in cognitive performance, participants completed either a single bout of 20-minutes of high intensity exercise on a cycle ergometer, or a control condition, in a cross-over trial design. Cognition was measured immediately post-intervention and the following day, and sleep (total sleep time, sleep onset latency, sleep efficiency, % of rapid eye movement sleep, light sleep and deep sleep) was characterized using WatchPAT™ at baseline (5 nights) and measured for one night after both exercise and control conditions.ResultsResults showed no effect of the exercise intervention on cognition immediately post-intervention, nor an effect of acute exercise on any sleep variable. There was no mediating effect of sleep on associations between exercise and cognition. However, a change from baseline to post-intervention in light sleep and deep sleep did predict change in episodic memory at the ~24 h post-intervention cognitive assessment, regardless of intervention condition.DiscussionThere was no effect of acute high intensity exercise on sleep or cognition in the current study. However, results suggest that associations between sleep and cognition may exist independently of exercise in our sample. Further research is required, and such studies may aid in informing the most effective lifestyle interventions for cognitive health.

【 授权许可】

Unknown   
Copyright © 2023 Sewell, Smith, Rainey-Smith, Peiffer, Sohrabi, Erickson and Brown.