Physically fit kids have beefier brain white matter than their less-fit peers

August 19, 2014
Science Daily/University of Illinois at Urbana-Champaign
A new study of 9- and 10-year-olds finds that those who are more aerobically fit have more fibrous and compact white-matter tracts in the brain than their peers who are less fit. 'White matter' describes the bundles of axons that carry nerve signals from one brain region to another. More compact white matter is associated with faster and more efficient nerve activity.

The new findings add to the evidence that aerobic exercise changes the brain in ways that improve cognitive function, Chaddock-Heyman said. "This study extends our previous work and suggests that white-matter structure may be one additional mechanism by which higher-fit children outperform their lower-fit peers on cognitive tasks and in the classroom," she said.
Science Daily/SOURCE :http://www.sciencedaily.com/releases/2014/08/140819083429.htm

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