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Higher Physical Activity Is Associated with Increased Attentional Network Connectivity in the Healthy Elderly

Authors
 Geon Ha Kim  ;  Kiho Im  ;  Hunki Kwon  ;  Sang Won Seo  ;  Byoung Seok Ye  ;  Hanna Cho  ;  YoungNoh  ;  Jong Min Lee  ;  Sung Tae Kim  ;  Sang Eon Park  ;  Hojeong Kim  ;  Jung Won Hwang  ;  Sue J. Kang  ;  Jee Hyang Jeong  ;  Duk L. Na 
Citation
 FRONTIERS IN AGING NEUROSCIENCE, Vol.8 : 198, 2016 
Journal Title
 FRONTIERS IN AGING NEUROSCIENCE 
Issue Date
2016
Keywords
attention ; brain network ; graph analysis ; healthy elderly ; physical activity
Abstract
The purpose of this study was to demonstrate the potential alterations in structural network properties related to physical activity (PA) in healthy elderly. We recruited 76 elderly individuals with normal cognition from Samsung Medical Center in Seoul, Korea. All participants underwent the Cambridge Neuropsychological Test Automated Battery and 3.0T brain magnetic resonance imaging (MRI). Participants were subdivided into quartiles according to the International Physical Activity Questionnaire scores, which represents the amount of PA. Through graph theory based analyses, we compared global and local network topologies according to PA quartile. The higher PA group demonstrated better performance in speed processing compared to the lower PA group. Regional nodal strength also significantly increased in the higher PA group, which involved the bilateral middle frontal, bilateral inferior parietal, right medial orbitofrontal, right superior, and middle temporal gyri. These results were further replicated when the highest and the lowest quartile groups were compared in terms of regional nodal strengths and local efficiency. Our findings that the regional nodal strengths associated with the attentional network were increased in the higher PA group suggest the preventive effects of PA on age-related cognitive decline, especially in attention.
Files in This Item:
T999901438.pdf Download
DOI
10.3389/fnagi.2016.00198
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Neurology (신경과학교실) > 1. Journal Papers
Yonsei Authors
Ye, Byoung Seok(예병석) ORCID logo https://orcid.org/0000-0003-0187-8440
Cho, Hanna(조한나) ORCID logo https://orcid.org/0000-0001-5936-1546
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/166123
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