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Effects of Isokinetic Passive Exercise and Isometric Muscle Contraction on Passive Stiffness
[Purpose] The purpose of this study was to investigate the effects of isokinetic passive exercise and motion velocity on passive stiffness. In addition, we also discuss the effects of the contraction of agonist and antagonist muscles on passive stiffness. [Subjects] The subjects were 20 healthy men...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Society of Physical Therapy Science
2013
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3820188/ https://www.ncbi.nlm.nih.gov/pubmed/24259791 http://dx.doi.org/10.1589/jpts.25.1347 |
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author | Terada, Shigeru Miaki, Hiroichi Uchiyama, Keita Hayakawa, Shozo Yamazaki, Toshiaki |
author_facet | Terada, Shigeru Miaki, Hiroichi Uchiyama, Keita Hayakawa, Shozo Yamazaki, Toshiaki |
author_sort | Terada, Shigeru |
collection | PubMed |
description | [Purpose] The purpose of this study was to investigate the effects of isokinetic passive exercise and motion velocity on passive stiffness. In addition, we also discuss the effects of the contraction of agonist and antagonist muscles on passive stiffness. [Subjects] The subjects were 20 healthy men with no bone or joint disease. [Methods] Isokinetic passive exercise and isometric muscle contraction were performed on an isokinetic dynamometer. The angular acceleration measured by the accelerometer was compared before and after each task. [Results] After the passive exercise, the angular acceleration increased in the phase of small damped oscillation. Moreover, the effect was higher at high-speed movement. The angular acceleration was decreased by the contraction of the agonist muscle. Conversely, the angular acceleration was increased by the contraction of the antagonist muscle. [Conclusion] Isokinetic passive exercise reduced passive stiffness. Our results suggest the possibility that passive stiffness is increased by agonist muscle contraction and decreased by antagonist muscle contraction. |
format | Online Article Text |
id | pubmed-3820188 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2013 |
publisher | The Society of Physical Therapy Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-38201882013-11-20 Effects of Isokinetic Passive Exercise and Isometric Muscle Contraction on Passive Stiffness Terada, Shigeru Miaki, Hiroichi Uchiyama, Keita Hayakawa, Shozo Yamazaki, Toshiaki J Phys Ther Sci Original [Purpose] The purpose of this study was to investigate the effects of isokinetic passive exercise and motion velocity on passive stiffness. In addition, we also discuss the effects of the contraction of agonist and antagonist muscles on passive stiffness. [Subjects] The subjects were 20 healthy men with no bone or joint disease. [Methods] Isokinetic passive exercise and isometric muscle contraction were performed on an isokinetic dynamometer. The angular acceleration measured by the accelerometer was compared before and after each task. [Results] After the passive exercise, the angular acceleration increased in the phase of small damped oscillation. Moreover, the effect was higher at high-speed movement. The angular acceleration was decreased by the contraction of the agonist muscle. Conversely, the angular acceleration was increased by the contraction of the antagonist muscle. [Conclusion] Isokinetic passive exercise reduced passive stiffness. Our results suggest the possibility that passive stiffness is increased by agonist muscle contraction and decreased by antagonist muscle contraction. The Society of Physical Therapy Science 2013-11-20 2013-10 /pmc/articles/PMC3820188/ /pubmed/24259791 http://dx.doi.org/10.1589/jpts.25.1347 Text en 2013©by the Society of Physical Therapy Science http://creativecommons.org/licenses/by-nc-nd/3.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial No Derivatives (by-nc-nd) License. |
spellingShingle | Original Terada, Shigeru Miaki, Hiroichi Uchiyama, Keita Hayakawa, Shozo Yamazaki, Toshiaki Effects of Isokinetic Passive Exercise and Isometric Muscle Contraction on Passive Stiffness |
title | Effects of Isokinetic Passive Exercise and Isometric Muscle Contraction on
Passive Stiffness |
title_full | Effects of Isokinetic Passive Exercise and Isometric Muscle Contraction on
Passive Stiffness |
title_fullStr | Effects of Isokinetic Passive Exercise and Isometric Muscle Contraction on
Passive Stiffness |
title_full_unstemmed | Effects of Isokinetic Passive Exercise and Isometric Muscle Contraction on
Passive Stiffness |
title_short | Effects of Isokinetic Passive Exercise and Isometric Muscle Contraction on
Passive Stiffness |
title_sort | effects of isokinetic passive exercise and isometric muscle contraction on
passive stiffness |
topic | Original |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3820188/ https://www.ncbi.nlm.nih.gov/pubmed/24259791 http://dx.doi.org/10.1589/jpts.25.1347 |
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