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Association between the executive dysfunction and balance function in patients with stroke
Katsuya Sakai1, Yuichiro Hosoi2,3, Yusuke Harada4,5
1Department of Physical Therapy, Faculty of Health Sciences, Tokyo Metropolitan University, Tokyo, Japan.
Introduction:
A previous study has shown an association between executive dysfunction (ED) and balance function in patients with stroke. However, it is unclear what factors mediate the association between ED and balance function. Therefore, the aim of this study was to investigate the association between ED and balance function and to identify mediating factors using mediation analysis.
Methods:
This study had a cross-sectional design. The study included 107 patients with stroke. This study was divided into two groups (ED and non-ED) using trail making test (TMT) part B. Two groups were compared for balance function (timed up and go test [TUGT] and Berg balance scale [BBS]) and other variables using paired test. In addition, partial correlation analysis with age, cognitive function as a control factor, and mediation analysis were also performed.
Results:
The ED group (N = 55) had significantly lower TUGT and BBS scores than the non-ED group (N = 52). TMT part B correlated with TUGT (ρ = 0.41), BBS (ρ = -0.33), and Brunnstrom recovery stage (BRS) lower limb (ρ = -0.22). The TUGT model of mediation analysis showed a significant indirect effect as a result of mediation of the BRS lower limb between TMT part B and TUGT. The BBS model showed a significant indirect effect as a result of mediation of the activities of daily living (ADL) motor function between TMT part B and BBS.
Conclusions:
ED and balance function were associated, and the degree of paralysis and ADL motor function were associated with them in patients with stroke.
