Journal
NEUROSCIENCE AND BIOBEHAVIORAL REVIEWS
Volume 130, Issue -, Pages 369-378Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.neubiorev.2021.09.003
Keywords
Exercise; Physical activity; Cognition; Sleep; Review; Moderation; Mediation; Executive function; Global cognition; Memory; Sleep efficiency; Sleep duration; Sleep quality
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Physical activity and sleep are important factors influencing cognitive function, and they may be interrelated. The limited existing literature has not thoroughly examined the causal relationships between physical activity, sleep, and cognition.
Physical activity and exercise can improve cognitive function and reduce the risk for dementia. Other lifestyle factors, including sleep, are associated with cognitive function and dementia risk, and exercise is an effective therapeutic strategy for improving sleep. Based on these associations, it has been hypothesised that sleep might be an important mediator for the effects of exercise on cognition. Here, we review the current literature to evaluate whether sleep and physical activity are independently or jointly associated with cognitive function. The extant literature in this area is minimal, and the causal relationships between physical activity, sleep and cognition have not been examined. A small number of cross-sectional studies in this area suggest that physical activity may attenuate some of the negative impact that poor sleep has on cognition, and also that sleep may be a mechanism through which physical activity improves cognitive abilities. Further research may enable the development of individually tailored intervention programs to result in the greatest cognitive benefit, ultimately delaying the onset of Alzheimer's disease.
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