Better Subjective Sleep Quality Partly Explains the Association Between Self-Reported Physical Activity and Better Cognitive Function

Author:

Cheval Boris12,Maltagliati Silvio3,Sieber Stefan45,Cullati Stéphane67,Zou Liye89,Ihle Andreas4510,Kramer Arthur F.1112,Yu Qian89,Sander David12,Boisgontier Matthieu P.1314

Affiliation:

1. Swiss Center for Affective Sciences, University of Geneva, Geneva, Switzerland

2. Laboratory for the Study of Emotion Elicitation and Expression (E3Lab), Department of Psychology, University of Geneva, Geneva, Switzerland

3. University Grenoble Alpes, SENS, Grenoble, France

4. Swiss NCCR “LIVES – Overcoming Vulnerability: Life Course Perspectives”, University of Geneva, Geneva, Switzerland

5. Center for the Interdisciplinary Study of Gerontology and Vulnerability, University of Geneva, Geneva, Switzerland

6. Population Health Laboratory, University of Fribourg, Fribourg, Switzerland

7. Department of Readaptation and Geriatrics, University of Geneva, Geneva, Switzerland

8. Institute of KEEP Collaborative Innovation, Shenzhen University, Shenzhen, Guangdong, China

9. Exercise Psychophysiology Laboratory, School of Psychology, Shenzhen University, Shenzhen, Guangdong, China

10. Cognitive Aging Lab, Department of Psychology, University of Geneva, Geneva, Switzerland

11. Center for Cognitive and Brain Health, Department of Psychology, Northeastern University, Boston, MA, USA

12. Beckman Institute, University of Illinois at Urbana-Champaign, Champaign, IL, USA

13. School of Rehabilitation Sciences, Faculty of Health Sciences, University of Ottawa, Ottawa, ON, Canada

14. Bruyère Research Institute, Ottawa, ON, Canada

Abstract

Background: Physical activity has been associated with better cognitive function and better sleep quality. Yet, whether the beneficial effect of physical activity on cognitive function can be explained by an indirect pathway involving better sleep quality is unclear. Objective: To investigate whether sleep quality mediates the association between physical activity and cognitive function in adults 50 years of age or older. Methods: 86,541 community-dwelling European adults were included in the study. Physical activity and sleep quality were self-reported. Indicators of cognitive function (immediate recall, delayed recall, verbal fluency) were assessed using objective tests. All measures were collected six times between 2004 and 2017. The mediation was tested using multilevel mediation analyses. Results: Results showed that self-reported physical activity was associated with better self-reported sleep quality, which was associated with better performance in all three indicators of cognitive function, demonstrating an indirect effect of physical activity on cognitive function through sleep quality. The mediating effect of sleep quality accounted for 0.41%, 1.46%, and 8.88% of the total association of physical activity with verbal fluency, immediate recall, and delayed recall, respectively. Conclusion: These findings suggest that self-reported sleep quality partly mediates the association between self-reported physical activity and cognitive function. These results need to be confirmed by device-based data of physical activity and sleep quality.

Publisher

IOS Press

Subject

Psychiatry and Mental health,Geriatrics and Gerontology,Clinical Psychology,General Medicine,General Neuroscience

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