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- W3194793540 abstract "The population of older adults is increasing, indicating a need to examine factors that may prevent or mitigate age-related cognitive decline. The current study examined whether microstructural white matter characteristics mediated the relation between physical activity and executive function in older adults without any self-reported psychiatric and neurological disorders or cognitive impairment (N = 43, mean age = 73 y). Physical activity was measured by average intensity and number of steps via accelerometry. Diffusion tensor imaging was used to examine microstructural white matter characteristics, and neuropsychological testing was used to examine executive functioning. Parallel mediation models were analyzed using microstructural white matter regions of interest as mediators of the association between physical activity and executive function. Results indicated that average steps was significantly related to executive function (β = 0.0003, t = 2.829, P = .007), while moderate to vigorous physical activity was not (β = 0.0007, t = 1.772, P = .08). White matter metrics did not mediate any associations. This suggests that microstructural white matter characteristics alone may not be the mechanism by which physical activity impacts executive function in aging." @default.
- W3194793540 created "2021-08-30" @default.
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- W3194793540 date "2021-10-01" @default.
- W3194793540 modified "2023-10-14" @default.
- W3194793540 title "The Relations Between Physical Activity Level, Executive Function, and White Matter Microstructure in Older Adults" @default.
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- W3194793540 doi "https://doi.org/10.1123/jpah.2021-0012" @default.
- W3194793540 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/34433700" @default.
- W3194793540 hasPublicationYear "2021" @default.
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