Quadriceps femoris muscle fatigue in patients with knee osteoarthritis

M Elboim-Gabyzon,1 N Rozen,2 Y Laufer11Physical Therapy Department, Faculty of Social Welfare and Health Sciences, University of Haifa, Haifa, Israel; 2Emek Medical Center, Afula, IsraelAbstract: The purpose of this study was to characterize quadriceps femoris muscle fatigue of both lower extremitie...

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Autores principales:	Elboim-Gabyzon M, Rozen N, Laufer Y
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2013
Materias:	Knee Osteoarthritis Fatigue Voluntary activation Quadriceps Femoris Muscle. Geriatrics RC952-954.6
Acceso en línea:	https://doaj.org/article/4b465f927d18489d80f89d621149da20
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spelling	oai:doaj.org-article:4b465f927d18489d80f89d621149da202021-12-02T00:13:51ZQuadriceps femoris muscle fatigue in patients with knee osteoarthritis1178-1998https://doaj.org/article/4b465f927d18489d80f89d621149da202013-08-01T00:00:00Zhttps://www.dovepress.com/quadriceps-femoris-muscle-fatigue-in-patients-with-knee-osteoarthritis-peer-reviewed-article-CIAhttps://doaj.org/toc/1178-1998M Elboim-Gabyzon,1 N Rozen,2 Y Laufer11Physical Therapy Department, Faculty of Social Welfare and Health Sciences, University of Haifa, Haifa, Israel; 2Emek Medical Center, Afula, IsraelAbstract: The purpose of this study was to characterize quadriceps femoris muscle fatigue of both lower extremities in patients with knee osteoarthritis (OA). Sixty-two subjects (mean age 68.2 years, standard deviation [SD] ± 7.9 years) with knee OA participated in the study. Significantly higher knee pain was reported in the involved knee than in the contralateral knee, as determined by a visual analog scale. Significant differences were demonstrated between the lower extremities in terms of maximal voluntary isometric contraction, in favor of the less involved leg (P = 0.0001). In contrast, the degree of fatigue of the quadriceps femoris muscle, as measured by the decrement in force production following ten repeated contractions, was significantly higher in the contralateral leg (P = 0.0002). Furthermore, normalization of the fatigue results to the first contraction yielded a similar result (P < 0.0001). Similar results were noted when analysis was performed separately for subjects whose involvement was unilateral or bilateral. The results indicate that, irrespective of the initial strength of contraction, the rate of muscle fatigue in the contralateral leg is significantly higher than in the involved leg. Hypotheses for these unexpected results are suggested. Rehabilitation of patients with knee OA should focus on increasing quadriceps muscle strength and endurance for both lower extremities.Keywords: knee, osteoarthritis, fatigue, quadriceps femoris muscleElboim-Gabyzon MRozen NLaufer YDove Medical PressarticleKneeOsteoarthritisFatigueVoluntary activationQuadriceps Femoris Muscle.GeriatricsRC952-954.6ENClinical Interventions in Aging, Vol Volume 8, Pp 1071-1077 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Knee Osteoarthritis Fatigue Voluntary activation Quadriceps Femoris Muscle. Geriatrics RC952-954.6
spellingShingle	Knee Osteoarthritis Fatigue Voluntary activation Quadriceps Femoris Muscle. Geriatrics RC952-954.6 Elboim-Gabyzon M Rozen N Laufer Y Quadriceps femoris muscle fatigue in patients with knee osteoarthritis
description	M Elboim-Gabyzon,1 N Rozen,2 Y Laufer11Physical Therapy Department, Faculty of Social Welfare and Health Sciences, University of Haifa, Haifa, Israel; 2Emek Medical Center, Afula, IsraelAbstract: The purpose of this study was to characterize quadriceps femoris muscle fatigue of both lower extremities in patients with knee osteoarthritis (OA). Sixty-two subjects (mean age 68.2 years, standard deviation [SD] ± 7.9 years) with knee OA participated in the study. Significantly higher knee pain was reported in the involved knee than in the contralateral knee, as determined by a visual analog scale. Significant differences were demonstrated between the lower extremities in terms of maximal voluntary isometric contraction, in favor of the less involved leg (P = 0.0001). In contrast, the degree of fatigue of the quadriceps femoris muscle, as measured by the decrement in force production following ten repeated contractions, was significantly higher in the contralateral leg (P = 0.0002). Furthermore, normalization of the fatigue results to the first contraction yielded a similar result (P < 0.0001). Similar results were noted when analysis was performed separately for subjects whose involvement was unilateral or bilateral. The results indicate that, irrespective of the initial strength of contraction, the rate of muscle fatigue in the contralateral leg is significantly higher than in the involved leg. Hypotheses for these unexpected results are suggested. Rehabilitation of patients with knee OA should focus on increasing quadriceps muscle strength and endurance for both lower extremities.Keywords: knee, osteoarthritis, fatigue, quadriceps femoris muscle
format	article
author	Elboim-Gabyzon M Rozen N Laufer Y
author_facet	Elboim-Gabyzon M Rozen N Laufer Y
author_sort	Elboim-Gabyzon M
title	Quadriceps femoris muscle fatigue in patients with knee osteoarthritis
title_short	Quadriceps femoris muscle fatigue in patients with knee osteoarthritis
title_full	Quadriceps femoris muscle fatigue in patients with knee osteoarthritis
title_fullStr	Quadriceps femoris muscle fatigue in patients with knee osteoarthritis
title_full_unstemmed	Quadriceps femoris muscle fatigue in patients with knee osteoarthritis
title_sort	quadriceps femoris muscle fatigue in patients with knee osteoarthritis
publisher	Dove Medical Press
publishDate	2013
url	https://doaj.org/article/4b465f927d18489d80f89d621149da20
work_keys_str_mv	AT elboimgabyzonm quadricepsfemorismusclefatigueinpatientswithkneeosteoarthritis AT rozenn quadricepsfemorismusclefatigueinpatientswithkneeosteoarthritis AT laufery quadricepsfemorismusclefatigueinpatientswithkneeosteoarthritis
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Quadriceps femoris muscle fatigue in patients with knee osteoarthritis

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