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Physical activity, aerobic fitness, and brain white matter: Their role for executive functions in adolescence
University of Jyväskylä.
Umeå University, Faculty of Social Sciences, Umeå School of Business and Economics (USBE), Statistics. Department of Mathematics and Statistics, University of Jyväskylä, Jyväskylä, Finland.ORCID iD: 0000-0003-2135-9963
University of Helsinki and Helsinki University Hospital.
Aalto University.
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2020 (English)In: Developmental Cognitive Neuroscience, ISSN 1878-9293, E-ISSN 1878-9307, Vol. 42, article id 100765Article in journal (Refereed) Published
Abstract [en]

Physical activity and exercise beneficially link to brain properties and cognitive functions in older adults, but the findings concerning adolescents remain tentative. During adolescence, the brain undergoes significant changes, which are especially pronounced in white matter. Studies provide contradictory evidence regarding the influence of physical activity or aerobic-exercise on executive functions in youth. Little is also known about the link be- tween both fitness and physical activity with the brain’s white matter during puberty. We investigated the connection between aerobic fitness and physical activity with the white matter in 59 adolescents. We further determined whether white matter interacts with the connection of fitness or physical activity with core executive functions. Our results show that only the level of aerobic fitness, but not of physical activity relates to white matter. Furthermore, the white matter of the corpus callosum and the right superior corona radiata moderates the links of aerobic fitness and physical activity with working memory. Our results suggest that aerobic fitness and physical activity have an unequal contribution to the white matter properties in adolescents. We propose that the differences in white matter properties could underlie the variations in the relationship between either physical activity or aerobic fitness with working memory.

Place, publisher, year, edition, pages
Elsevier, 2020. Vol. 42, article id 100765
Keywords [en]
Diffusion tensor imaging, Executive functions, Fitness, Fractional anisotropy, Physical activity, White matter
National Category
Neurosciences
Identifiers
URN: urn:nbn:se:umu:diva-168023DOI: 10.1016/j.dcn.2020.100765OAI: oai:DiVA.org:umu-168023DiVA, id: diva2:1392793
Available from: 2020-02-10 Created: 2020-02-10 Last updated: 2020-02-14Bibliographically approved

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