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Changes in Functional Connectivity Between Default Mode Network and Attention Network in Response to Changes in Aerobic Exercise IntensityChanges in Functional Connectivity Between Default Mode Network and Attention Network in Response to Changes in Aerobic Exercise Intensity

Authors
Young-woo KoSun Mi KimKyoung Doo KangDoug Hyun Han
Issue Date
Jan-2023
Publisher
대한신경정신의학회
Keywords
Aerobic exercise; Resting-state functional magnetic resonance imaging; Brain functional connectivity; Default mode network; Dorsal attention network.
Citation
PSYCHIATRY INVESTIGATION, v.20, no.1, pp 27 - 34
Pages
8
Journal Title
PSYCHIATRY INVESTIGATION
Volume
20
Number
1
Start Page
27
End Page
34
URI
https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/71544
DOI
10.30773/pi.2022.0245
ISSN
1738-3684
1976-3026
Abstract
Objective Aerobic exercise may be associated with changes in brain activity within the default mode network (DMN) and dorsal atten tion network (DAN). We hypothesized that changes in functional connectivity (FC) within the DMN and DAN might be most effectively activated by moderate-intensity exercise. Methods Resting-state functional magnetic resonance imaging scans and visuospatial attention tests after resting were performed be fore and after each of moderate- and high-intensity aerobic exercises (10 min each) in 15 healthy male volunteers. Results The reaction time during the attention test increased significantly, and the rate of correct responses decreased from moderate intensity exercise condition to high-intensity exercise condition. FC within the DMN under high-intensity exercise condition was higher than that under pre-exercise and moderate-intensity exercise conditions. FC within the DAN under moderate-intensity exercise condi tion was the highest, whereas FC between the DMN and DAN under moderate-intensity exercise condition was the lowest. Changes in cognitive domain functions were associated with changes in FC between the DMN and DAN. Conclusion Our results support the inverted-U hypothesis of maximum arousal efficacy during moderate exercise. Both cognitive do mains, namely, the attention system and brain activity domains, may be better under moderate-intensity exercise than under high-inten sity exercise.
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