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• W2109223996 abstract "Background Despite mounting evidence that physical activity has positive benefits for brain and cognitive health, there has been little characterization of the relationship between cardiorespiratory (CR) fitness and cognition-associated brain activity as measured by functional magnetic resonance imaging (fMRI). The lack of evidence is particularly glaring for diseases such as Alzheimer disease (AD) that degrade cognitive and functional performance. Objective The aim of this study was to describe the relationship between regional brain activity during cognitive tasks and CR fitness level in people with and without AD. Design A case-control, single-observation study design was used. Methods Thirty-four individuals (18 without dementia and 16 in the earliest stages of AD) completed maximal exercise testing and performed a Stroop task during fMRI. Results Cardiorespiratory fitness was inversely associated with anterior cingulate activity in the participants without dementia (r=−.48, P=.05) and unassociated with activation in those with AD (P&gt;.7). Weak associations of CR fitness and middle frontal cortex were noted. Limitations The wide age range and the use of a single task in fMRI rather than multiple tasks challenging different cognitive capacities were limitations of the study. Conclusions The results offer further support of the relationship between CR fitness and regional brain activity. However, this relationship may be attenuated by disease. Future work in this area may provide clinicians and researchers with interpretable and dependable regional fMRI biomarker signatures responsive to exercise intervention. It also may shed light on mechanisms by which exercise can support cognitive function." @default.
• W2109223996 created "2016-06-24" @default.
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• W2109223996 date "2013-07-01" @default.
• W2109223996 modified "2023-09-27" @default.
• W2109223996 title "Alzheimer Disease Alters the Relationship of Cardiorespiratory Fitness With Brain Activity During the Stroop Task" @default.
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• W2109223996 doi "https://doi.org/10.2522/ptj.20120465" @default.
• W2109223996 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/3704231" @default.
• W2109223996 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/23559521" @default.
• W2109223996 hasPublicationYear "2013" @default.
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