Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/17578
Title: Balance ability, not muscle strength and exercise endurance, determines the performance of hemiparetic subjects on the timed-sit-to-stand test
Authors: Ng, S 
Issue Date: 2010
Publisher: Lippincott Williams & Wilkins
Source: American journal of physical medicine and rehabilitation, 2010, v. 89, no. 6, p. 497-504 How to cite?
Journal: American journal of physical medicine and rehabilitation 
Abstract: Ng SSM: Balance ability, not muscle strength and exercise endurance, determines the performance of hemiparetic subjects on the timed-sit-to-stand test.
Objective: To examine the contribution of balance ability, muscle strength, and exercise endurance to performance in the timed-sit-to-stand test among chronic hemiparetic subjects.
Design: A cross-sectional study with 68 community-dwelling stroke survivors.
Results: By using Pearson correlation coefficient, the five-times-sit-to-stand (FTSTS) test scores showed the highest negative correlation with Berg Balance Scale scores (r = −0.837,P < 0.001), and it showed significant moderate correlation with muscle strength index (r = −0.577, P < 0.001) and distance covered in a 6-min walk test (r = −0.598, P < 0.001). After controlling for demographic factors, significant partial correlation was identified between FTSTS scores and Berg Balance Scale scores only (r = −0.630, P < 0.001). Linear regression model, after accounting for demographics and subjective balance confidence, showed that FTSTS scores were independently associated with Berg Balance Scale scores (β = −0.630, P < 0.001), whereas muscle strength index and distance covered in the 6-min walk test were not significant predictors of FTSTS scores. The whole model could explain 71% of the variance in FTSTS scores.
Conclusions: This is the first study documenting the importance of balance ability, not muscle strength and exercise endurance, as an important determinant of performance on the FTSTS test by community-dwelling stroke patients. These findings suggest that the FTSTS test may be a more appropriate proxy indicator of balance performance in chronic community-dwelling stroke subjects.
URI: http://hdl.handle.net/10397/17578
ISSN: 0894-9115
DOI: 10.1097/PHM.0b013e3181d3e90a
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