Balance ability, not muscle strength and exercise endurance, determines the performance of hemiparetic subjects on the timed-sit-to-stand test

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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.
Original languageEnglish
Pages (from-to)497-504
Number of pages8
JournalAmerican Journal of Physical Medicine and Rehabilitation
Volume89
Issue number6
DOIs
Publication statusPublished - 1 Jun 2010

Keywords

  • Balance
  • Hemiparesis
  • Sit-to-Stand Test
  • Stroke

ASJC Scopus subject areas

  • Physical Therapy, Sports Therapy and Rehabilitation
  • Rehabilitation

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