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Title: A structural equation model of the relationship between muscle strength, balance performance, walking endurance and community integration in stroke survivors
Authors: Kwong, PWH 
Ng, SSM 
Chung, RCK 
Ng, GYF 
Issue Date: 2017
Publisher: Public Library of Science
Source: PLoS one, 2017, v. 12, no. 10, 185807 How to cite?
Journal: PLoS one 
Abstract: Purpose To use structural equation modelling (SEM) to determine (1) the direct and indirect associations of strength of paretic lower limb muscles with the level of community integration, and (2) the direct association of walking endurance and balance performance with the level of community integration in community-dwelling stroke survivors. Materials and methods In this cross-sectional study of 105 stroke survivors, the Subjective Index of Physical and Social Outcome (SIPSO) was used to measure the level of community integration. Lower-limb strength measures included isometric paretic ankle strength and isokinetic paretic knee peak torque. The Berg Balance Scale (BBS) and the 6-minute walk test (6MWT) were used to evaluate balance performance and walking endurance, respectively. Results SEM revealed that the distance walked on the 6MWT had the strongest direct association with the SIPSO score (beta = 0.41, p < 0.001). An increase of one standard deviation in the 6MWT distance resulted in an increase of 0.41 standard deviations in the SIPSO score. Moreover, dorsiflexion strength (beta = 0.18, p = 0.044) and the BBS score (beta = 0.21, p = 0.021) had direct associations with the SIPSO score. Conclusions The results of the proposed model suggest that rehabilitation training of community-dwelling stroke survivors could focus on walking endurance, balance performance and dorsiflexor muscle strengthening if the aim is to augment the level of community integration.
ISSN: 1932-6203
EISSN: 1932-6203
DOI: 10.1371/journal.pone.0185807
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