Muscular utilization of the plantarflexors, hip flexors and extensors in persons with hemiparesis walking at self-selected and maximal speeds

Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology
Marie-Hélène MilotD Gravel

Abstract

Gait performance secondary to a stroke is partially dependent on residual muscle strength. However, to pinpoint more precisely the mechanism of this relationship, biomechanical models, such as the muscular utilization ratio (MUR) that integrates both muscle strength and gait parameters into the concept of level of effort, are warranted. The aim of the present study was to evaluate the MUR of plantarflexors, hip flexors and extensor muscles during their concentric action in 17 chronic hemiparetic participants walking at self-selected and maximal speeds. Results revealed that peak MUR increased with gait speed. At self-selected speed (0.73+/-0.27 m/s), peak MUR values on the paretic side were 64% (+/-18.7), 46% (+/-27.6) and 33% (+/-25.6) for the plantarflexors, hip flexors and extensor muscles, respectively. At maximal speed (1.26+/-0.39 m/s), corresponding values were 77% (+/-23.6), 72% (+/-33.0) and 58% (+/-32.1). Peak MUR showed negative associations (-0.33<r>-0.68), although not all significant, with voluntary muscle strength. The results of this study indicated that the peak MUR increased with gait speed. The plantarflexors were the most used muscle group at self-selected speed, whereas at maximal speed the three muscle gro...Continue Reading

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Citations

Jul 23, 2013·Archives of Physical Medicine and Rehabilitation·Andreia S P SousaJoão Manuel R S Tavares
Mar 13, 2014·The Journal of Arthroplasty·Joakim BjerkeAnn K Stensdotter
Mar 12, 2013·Brain Injury : [BI]·Gavin WilliamsMeg E Morris
Nov 9, 2015·Neurophysiologie clinique = Clinical neurophysiology·C BeyaertG E Frykberg
Apr 30, 2013·Muscle & Nerve·Allison S HyngstromSandra K Hunter
Apr 18, 2015·Journal of Neuroengineering and Rehabilitation·Christopher P HurtDavid A Brown
Mar 8, 2014·Gait & Posture·Megan M RybarAllison S Hyngstrom
Oct 27, 2009·Neurorehabilitation and Neural Repair·Marco PaoloniValter Santilli
Jan 21, 2010·Neurorehabilitation and Neural Repair·Gavin WilliamsPaul R McCrory
Jan 2, 2016·Neurorehabilitation and Neural Repair·HaoYuan HsiaoStuart A Binder-Macleod
Oct 31, 2008·Neurorehabilitation and Neural Repair·Ruth Dickstein
Dec 13, 2017·Journal of Neurologic Physical Therapy : JNPT·Dorian K RosePeter Wludyka
Jul 11, 2018·Journal of Applied Biomechanics·Katie A ConwayJason R Franz
Nov 10, 2017·Journal of Strength and Conditioning Research·Loren Z F Chiu
May 26, 2010·Journal of Applied Biomechanics·Debra G George-Reichley, Jill S Higginson
Jan 22, 2019·Brain Injury : [BI]·Gavin Williams, Anthony G Schache
Jun 3, 2017·International Journal of Rehabilitation Research. Internationale Zeitschrift Für Rehabilitationsforschung. Revue Internationale De Recherches De Réadaptation·Luigi TesioLuigi Catino
Jun 24, 2006·Stroke; a Journal of Cerebral Circulation·Marie-Hélène MilotLuis F Requião
Oct 17, 2019·Frontiers in Neurology·Luigi Tesio, Viviana Rota

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