Medical College of Wisconsin
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Functional implications of impaired control of submaximal hip flexion following stroke. Muscle Nerve 2014 Feb;49(2):225-32

Date

04/30/2013

Pubmed ID

23625534

Pubmed Central ID

PMC4511603

DOI

10.1002/mus.23886

Scopus ID

2-s2.0-84892539771   13 Citations

Abstract

INTRODUCTION: We quantified submaximal torque regulation during low to moderate intensity isometric hip flexion contractions in individuals with stroke and the associations with leg function.

METHODS: Ten 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, nonparetic, and control legs.

RESULTS: Participants with stroke had larger torque fluctuations (coefficient of variation, CV), for both the paretic and nonparetic legs, than controls (P < 0.05) with the largest CV at 5% MVC in the paretic leg (P < 0.05). The paretic CV correlated with walking speed (r2 = 0.54) and Berg Balance Score (r2 = 0.40). 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 poststroke.

Author List

Hyngstrom AS, Kuhnen HR, Kirking KM, Hunter SK

Author

Allison Hyngstrom PhD Associate Professor in the Physical Therapy department at Marquette University




MESH terms used to index this publication - Major topics in bold

Aged
Biomechanical Phenomena
Case-Control Studies
Female
Hip Joint
Humans
Isometric Contraction
Male
Middle Aged
Models, Biological
Muscle, Skeletal
Paresis
Range of Motion, Articular
Stroke
Torque
Walking