The Independent Associations of Physical Activity and Sleep with Cognitive Function in Older Adults

Journal of Alzheimer's Disease : JAD
Ryan S FalckTeresa Liu-Ambrose

Abstract

Current evidence suggests physical activity (PA) and sleep are important for cognitive health; however, few studies examining the role of PA and sleep for cognitive health have measured these behaviors objectively. We cross-sectionally examined whether 1) higher PA is associated with better cognitive performance independently of sleep quality; 2) higher sleep quality is associated with better cognitive performance independently of PA; and 3) whether higher PA is associated with better sleep quality. We measured PA, subjective sleep quality using the Pittsburgh Sleep Quality Index (PSQI), and objective sleep quality (i.e., fragmentation, efficiency, duration, and latency) using the MotionWatch8© in community-dwelling adults (N = 137; aged 55+). Cognitive function was indexed using the Alzheimer's Disease Assessment Scale-Plus. Correlation analyses were performed to determine relationships between PA, sleep quality, and cognitive function. We then used latent variable modelling to examine the relationships of PA with cognitive function independently of sleep quality, sleep quality with cognitive function independently of PA, and PA with sleep quality. We found greater PA was associated with better cognitive performance independen...Continue Reading

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Citations

Jan 9, 2020·Journal of Cachexia, Sarcopenia and Muscle·Asier MañasIgnacio Ara
Jan 26, 2020·International Journal of Environmental Research and Public Health·Manqiong YuanYa Fang
Sep 11, 2018·Journal of Sleep Research·John R BestTeresa Liu-Ambrose
Aug 8, 2021·International Journal of Environmental Research and Public Health·Emerald G HeilandMaria M Ekblom
Sep 11, 2021·Neuroscience and Biobehavioral Reviews·Kelsey R SewellBelinda M Brown

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