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Quadriceps femoris muscle fatigue in patients with knee osteoarthritis
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 wa...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Dove Medical Press
2013
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3746781/ https://www.ncbi.nlm.nih.gov/pubmed/23976847 http://dx.doi.org/10.2147/CIA.S42094 |
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author | Elboim-Gabyzon, M Rozen, N Laufer, Y |
author_facet | Elboim-Gabyzon, M Rozen, N Laufer, Y |
author_sort | Elboim-Gabyzon, M |
collection | PubMed |
description | 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. |
format | Online Article Text |
id | pubmed-3746781 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2013 |
publisher | Dove Medical Press |
record_format | MEDLINE/PubMed |
spelling | pubmed-37467812013-08-23 Quadriceps femoris muscle fatigue in patients with knee osteoarthritis Elboim-Gabyzon, M Rozen, N Laufer, Y Clin Interv Aging Original Research 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. Dove Medical Press 2013 2013-08-13 /pmc/articles/PMC3746781/ /pubmed/23976847 http://dx.doi.org/10.2147/CIA.S42094 Text en © 2013 Elboim-Gabyzon et al, publisher and licensee Dove Medical Press Ltd This is an Open Access article which permits unrestricted noncommercial use, provided the original work is properly cited. |
spellingShingle | Original Research Elboim-Gabyzon, M Rozen, N Laufer, Y Quadriceps femoris muscle fatigue in patients with knee osteoarthritis |
title | 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_short | Quadriceps femoris muscle fatigue in patients with knee osteoarthritis |
title_sort | quadriceps femoris muscle fatigue in patients with knee osteoarthritis |
topic | Original Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3746781/ https://www.ncbi.nlm.nih.gov/pubmed/23976847 http://dx.doi.org/10.2147/CIA.S42094 |
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