brain activation during dual-task processing is associated with cardiorespiratory fitness and performance in older adults
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2015
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Abstract
Higher cardiorespiratory fitness is associated with better cognitive performance and enhanced brain activation. Yet, the extent to which cardiorespiratory fitness-related brain activation is associated with better cognitive performance is not well understood. In this cross-sectional study, we examined whether the association between cardiorespiratory fitness and executive function was mediated by greater prefrontal cortex activation in healthy older adults. Brain activation was measured during dual-task performance with functional magnetic resonance imaging in a sample of 128 healthy older adults (59-80 years). Higher cardiorespiratory fitness was associated with greater activation during dual-task processing in several brain areas including the anterior cingulate and supplementary motor cortex (ACC/SMA), thalamus and basal ganglia, right motor/somatosensory cortex and middle frontal gyrus, and left somatosensory cortex, controlling for age, sex, education, and gray matter volume. Of these regions, greater ACC/SMA activation mediated the association between cardiorespiratory fitness and dual-task performance. We provide novel evidence that cardiorespiratory fitness may support cognitive performance by facilitating brain activation in a core region critical for executive function.
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| Reference Key |
wong2015frontiersbrain
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| Authors | ;Chelsea N Wong;Chelsea N Wong;Laura eChaddock-Heyman;Michelle W Voss;Agnieszka Z Burzynska;Chandramallika eBasak;Kirk I Erickson;Ruchika Shaurya Prakash;Amanda eSzabo-Reed;Siobhan M Phillips;Thomas eWojcicki;Emily L Mailey;Edward eMcAuley;Arthur F Kramer |
| Journal | Frontiers in chemistry |
| Year | 2015 |
| DOI |
10.3389/fnagi.2015.00154
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| URL | |
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