Document Type

Article

Language

eng

Format of Original

8 p.

Publication Date

2013

Publisher

Wiley

Source Publication

Muscle & Nerve

Source ISSN

1097-4598

Original Item ID

doi: 10.1002/mus.23886

Abstract

Introduction: We quantified sub-maximal torque regulation during low to moderate intensity isometric hip flexion contractions in individuals with stroke and the associations with leg function. Methods: 10 participants with chronic stroke and 10 controls performed isometric hip flexion contractions at 5%, 10%, 15%, 20%, and 40% of maximal voluntary contraction (MVC) in paretic, non-paretic, and control legs. Results: Participants with stroke had larger torque fluctuations (coefficient of variation, CV), for both the paretic and non-paretic legs, than controls (Pr2 =0.45) and Berg Balance Score (r2=0.38). At 5% MVC, there were larger torque fluctuations in the contralateral leg during paretic contractions compared with the control leg. Conclusions: Impaired low-force regulation of paretic leg hip flexion can be functionally relevant and related to control versus strength deficits post stroke.

Comments

Accepted version. Muscle & Nerve, Vol. 49, No. 2 (November 2013): 225-232. DOI. © 2013 John Wiley & Sons, Inc. Used with permission.

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