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. 2005 Oct;22(2):126-31.
doi: 10.1016/j.gaitpost.2004.08.002.

Muscle strength and weight-bearing symmetry relate to sit-to-stand performance in individuals with stroke

Melanie J Lomaglio  1 , Janice J Eng
Affiliations

Muscle strength and weight-bearing symmetry relate to sit-to-stand performance in individuals with stroke

Melanie J Lomaglio et al. Gait Posture. 2005 Oct.

Abstract

This study investigated the relationship of lower extremity joint torques and weight-bearing symmetry to sit-to-stand (STS) performance in individuals with chronic stroke. A motion analysis system and two force plates measured STS duration and weight-bearing symmetry (determined by ground reaction forces) during three self-paced and three fast-paced conditions. An isokinetic dynamometer measured maximum concentric joint torques of the paretic and non-paretic ankle, knee, and hip, which were normalized by body mass. Pearson correlations indicated that (a) paretic ankle dorsiflexion and knee extension torques related to the duration of the self-paced STS condition (r = -0.450, -0.716, respectively), (b) paretic ankle dorsiflexion, plantar flexion, and knee extension torques related to the duration of the fast-paced STS condition (r = -0.466, -0.616, -0.736, respectively), and (c) greater weight-bearing symmetry related to faster STS performance for both self-paced and fast-paced STS conditions (r = -0.565, -0.564, respectively) (P < 0.05). This evidence suggests that paretic muscle strength and the ability to load the paretic limb are important factors underlying the ability to rise from a chair in individuals with chronic stroke.

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