Midfemoral Bone Volume of Walking Subjects with Chronic Hemiparesis Post Stroke.

Autor: Silva-Couto MA; Department of Physical Therapy, Federal University of São Carlos (UFSCar), São Carlos, São Paulo, Brazil., Paiva FF; Physics Institute of São Carlos, University of São Paulo, São Paulo, São Paulo, Brazil., Alcântara CC; Department of Physical Therapy, Federal University of São Carlos (UFSCar), São Carlos, São Paulo, Brazil., Mata T; Department of Physical Therapy, Federal University of São Carlos (UFSCar), São Carlos, São Paulo, Brazil., Prado-Medeiros CL; Department of Physical Therapy, Federal University of São Carlos (UFSCar), São Carlos, São Paulo, Brazil., Salvini TF; Department of Physical Therapy, Federal University of São Carlos (UFSCar), São Carlos, São Paulo, Brazil., Russo TL; Department of Physical Therapy, Federal University of São Carlos (UFSCar), São Carlos, São Paulo, Brazil. Electronic address: thiagoluizrusso@gmail.com.
Jazyk: angličtina
Zdroj: Journal of stroke and cerebrovascular diseases : the official journal of National Stroke Association [J Stroke Cerebrovasc Dis] 2018 Aug; Vol. 27 (8), pp. 2208-2213. Date of Electronic Publication: 2018 May 04.
DOI: 10.1016/j.jstrokecerebrovasdis.2018.04.005
Abstrakt: Background and Purpose: Muscle and bone form a functional unit. Residual physical poststroke impairments such as muscle weakness, spasticity, and decrease in function can promote metabolic bone changes. Moreover, muscle strength can influence this process. Thus, the purpose of the present study was to investigate bone volume and mobility performance in subjects with chronic hemiparesis post stroke.
Methods: A cross-sectional study was performed on 14 subjects post stroke who were paired with healthy controls. Bone volume, isometric muscle performance, and mobility levels were measured. Midfemoral bone volumes were determined using magnetic resonance imaging, and muscular performance was measured by dynamometry. Mobility was measured using the Timed Up and Go Test and the 10-Meter Walk Test.
Results: Regarding bone volume total, there was no difference in the medullary and cortical groups (P ≥ .05). During torque peak isometric flexion, the paretic group was significantly different compared with the other groups (P = .001). However, the control presented no difference compared with the nonparetic limb (P = .40). With regard to the extension isometric torque peak, the paretic limb was significantly different compared with the nonparetic (P = .033) and the control (P = .001) limbs, and the control was different from the nonparetic limb (P = .045). Bone volume variables correlated with the isometric torque peak.
Conclusions: Chronic hemiparetic subjects maintain bone geometry compared with healthy volunteers matched by age, body mass index, and gender. The correlation between bone volume midfemoral structures and knee isometric torque was possible.
(Copyright © 2018 National Stroke Association. Published by Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
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