Intrinsic properties of the knee extensor muscles after subacute stroke

Archives of Physical Medicine and Rehabilitation
Astrid M HorstmanArnold de Haan

Abstract

Horstman AM, Gerrits KH, Beltman MJ, Koppe PA, Janssen, TW, de Haan A. Intrinsic properties of the knee extensor muscles after subacute stroke. To characterize muscle properties of paretic lower-limb (PL) and nonparetic lower-limb (NL) knee extensors in patients with subacute stroke. Case-control study. Rehabilitation center research laboratory. Patients with subacute stroke (n=14) and able-bodied age-matched control subjects (n=12). Not applicable. Half relaxation times (HRTs) and maximal rates of torque development (MRTDs) were assessed as indicators of contractile speed using both voluntary and electrically evoked contractions. Moreover, changes in torque were measured during a fatigue protocol (35 electrically evoked intermittent contractions; 1.5s on, 2s off) and recovery. No differences among groups were found for normalized MRTDs during electrically evoked contractions (P=.117). However, during voluntary contractions both PLs (53% of control, P=.022) and NL (71% of control, P<.001) had significantly lower MRTD compared with control. Both PL (134% of control, P=.001) and NL (123% of control, P=.032) had significantly higher HRTs than control, indicating muscle slowing in patients with subacute stroke. PLs fatigued more an...Continue Reading

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Citations

Apr 2, 2011·European Journal of Applied Physiology·Marius Steiro FimlandJan Hoff
Sep 24, 2010·Journal of Neuroengineering and Rehabilitation·Mónica S CameirãoPaul F M J Verschure
Sep 8, 2012·Journal of Neuroengineering and Rehabilitation·Andrew PennycottRobert Riener
Jun 6, 2012·Disability and Rehabilitation·Svetlana KnorrS Jayne Garland
Dec 12, 2017·Frontiers in Human Neuroscience·Lara McManusMadeleine M Lowery
Oct 5, 2018·American Journal of Physical Medicine & Rehabilitation·LeAnn M SnowLaDora V Thompson
Jul 1, 2020·Scandinavian Journal of Medicine & Science in Sports·Laurien M BuffartTeatske M Altenburg
Mar 17, 2018·BioMed Research International·Ji-Eun ChoWan-Hee Lee

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