Torque, sinal eletromiográfico e respostas da frequência cardíaca durante exercícios concêntrico e excêntrico em homens idosos
Autor(a) principal: | |
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Data de Publicação: | 2011 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/S1413-35552011005000004 http://hdl.handle.net/11449/226288 |
Resumo: | Background: The literature reports that the eccentric muscular action produces greater force and lower myoelectric activity than the concentric muscular action, while the heart rate (HR) responses are bigger during concentric contraction. Objectives: To investigate the maximum average torque (MAT), surface electromyographic (SEMG) and the heart rate (HR) responses during different types of muscular contraction and angular velocities in older men. Methods: Twelve healthy men (61.7±1.6years) performed concentric (C) and eccentric (E) isokinetic knee extension-flexion at 60°/s and 120°/s. SEMG activity was recorded from vastus lateralis muscle and normalized by Root Mean Square-RMS (μV) of maximal isometric knee extension at 60°. HR (beats/min) and was recorded at rest and throughout each contraction. The data were analyzed by the Friedman test for repeated measures with post hoc Dunn's test (p<0.05). Results: The median values of MAT (N.m/kg) was smaller and the RMS (μV) was larger during concentric contraction (C60°/s=2.80 and 0.99; C120°/s=2.46 and 1.0) than eccentric (E60°/s=3.94 and 0.85; E120°/s=4.08 and 0.89), respectively. The HR variation was similar in the four conditions studied. Conclusion: The magnitude of MAT and RMS responses in older men were dependent of the nature of the muscular action and independent of the angular velocity, whereas HR response was not influenced by these factors. © Revista Brasileira de Fisioterapia. |
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Torque, sinal eletromiográfico e respostas da frequência cardíaca durante exercícios concêntrico e excêntrico em homens idososTorque, myoeletric sygnal and heart rate responses during concentric and eccentric exercises in older menElderlyExerciseHeart rateIsokineticSurface electromyographyBackground: The literature reports that the eccentric muscular action produces greater force and lower myoelectric activity than the concentric muscular action, while the heart rate (HR) responses are bigger during concentric contraction. Objectives: To investigate the maximum average torque (MAT), surface electromyographic (SEMG) and the heart rate (HR) responses during different types of muscular contraction and angular velocities in older men. Methods: Twelve healthy men (61.7±1.6years) performed concentric (C) and eccentric (E) isokinetic knee extension-flexion at 60°/s and 120°/s. SEMG activity was recorded from vastus lateralis muscle and normalized by Root Mean Square-RMS (μV) of maximal isometric knee extension at 60°. HR (beats/min) and was recorded at rest and throughout each contraction. The data were analyzed by the Friedman test for repeated measures with post hoc Dunn's test (p<0.05). Results: The median values of MAT (N.m/kg) was smaller and the RMS (μV) was larger during concentric contraction (C60°/s=2.80 and 0.99; C120°/s=2.46 and 1.0) than eccentric (E60°/s=3.94 and 0.85; E120°/s=4.08 and 0.89), respectively. The HR variation was similar in the four conditions studied. Conclusion: The magnitude of MAT and RMS responses in older men were dependent of the nature of the muscular action and independent of the angular velocity, whereas HR response was not influenced by these factors. © Revista Brasileira de Fisioterapia.Physical Therapy Department Universidade Federal de São Carlos (UFSCar), São Carlos, SPSpecial Education Department Universidade Estadual Paulista 'Julio de Mesquita Filho' (UNESP), Marilia, SPFaculty of Health Sciences Universidade Metodista de Piracicaba (UNIMEP), Piracicaba, SPSpecial Education Department Universidade Estadual Paulista 'Julio de Mesquita Filho' (UNESP), Marilia, SPUniversidade Federal de São Carlos (UFSCar)Universidade Estadual Paulista (UNESP)Universidade Metodista de Piracicaba (UNIMEP)Quitério, Robison J. [UNESP]Melo, Ruth C.Takahashi, Anielle C. M.Aniceto, Isabela A. V.Silva, EsterCatai, Aparecida M.2022-04-28T22:36:59Z2022-04-28T22:36:59Z2011-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article8-14http://dx.doi.org/10.1590/S1413-35552011005000004Revista Brasileira de Fisioterapia, v. 15, n. 1, p. 8-14, 2011.1413-35551809-9246http://hdl.handle.net/11449/22628810.1590/S1413-355520110050000042-s2.0-79953238504Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporRevista Brasileira de Fisioterapiainfo:eu-repo/semantics/openAccess2022-04-28T22:36:59Zoai:repositorio.unesp.br:11449/226288Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462022-04-28T22:36:59Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Torque, sinal eletromiográfico e respostas da frequência cardíaca durante exercícios concêntrico e excêntrico em homens idosos Torque, myoeletric sygnal and heart rate responses during concentric and eccentric exercises in older men |
title |
Torque, sinal eletromiográfico e respostas da frequência cardíaca durante exercícios concêntrico e excêntrico em homens idosos |
spellingShingle |
Torque, sinal eletromiográfico e respostas da frequência cardíaca durante exercícios concêntrico e excêntrico em homens idosos Quitério, Robison J. [UNESP] Elderly Exercise Heart rate Isokinetic Surface electromyography |
title_short |
Torque, sinal eletromiográfico e respostas da frequência cardíaca durante exercícios concêntrico e excêntrico em homens idosos |
title_full |
Torque, sinal eletromiográfico e respostas da frequência cardíaca durante exercícios concêntrico e excêntrico em homens idosos |
title_fullStr |
Torque, sinal eletromiográfico e respostas da frequência cardíaca durante exercícios concêntrico e excêntrico em homens idosos |
title_full_unstemmed |
Torque, sinal eletromiográfico e respostas da frequência cardíaca durante exercícios concêntrico e excêntrico em homens idosos |
title_sort |
Torque, sinal eletromiográfico e respostas da frequência cardíaca durante exercícios concêntrico e excêntrico em homens idosos |
author |
Quitério, Robison J. [UNESP] |
author_facet |
Quitério, Robison J. [UNESP] Melo, Ruth C. Takahashi, Anielle C. M. Aniceto, Isabela A. V. Silva, Ester Catai, Aparecida M. |
author_role |
author |
author2 |
Melo, Ruth C. Takahashi, Anielle C. M. Aniceto, Isabela A. V. Silva, Ester Catai, Aparecida M. |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Federal de São Carlos (UFSCar) Universidade Estadual Paulista (UNESP) Universidade Metodista de Piracicaba (UNIMEP) |
dc.contributor.author.fl_str_mv |
Quitério, Robison J. [UNESP] Melo, Ruth C. Takahashi, Anielle C. M. Aniceto, Isabela A. V. Silva, Ester Catai, Aparecida M. |
dc.subject.por.fl_str_mv |
Elderly Exercise Heart rate Isokinetic Surface electromyography |
topic |
Elderly Exercise Heart rate Isokinetic Surface electromyography |
description |
Background: The literature reports that the eccentric muscular action produces greater force and lower myoelectric activity than the concentric muscular action, while the heart rate (HR) responses are bigger during concentric contraction. Objectives: To investigate the maximum average torque (MAT), surface electromyographic (SEMG) and the heart rate (HR) responses during different types of muscular contraction and angular velocities in older men. Methods: Twelve healthy men (61.7±1.6years) performed concentric (C) and eccentric (E) isokinetic knee extension-flexion at 60°/s and 120°/s. SEMG activity was recorded from vastus lateralis muscle and normalized by Root Mean Square-RMS (μV) of maximal isometric knee extension at 60°. HR (beats/min) and was recorded at rest and throughout each contraction. The data were analyzed by the Friedman test for repeated measures with post hoc Dunn's test (p<0.05). Results: The median values of MAT (N.m/kg) was smaller and the RMS (μV) was larger during concentric contraction (C60°/s=2.80 and 0.99; C120°/s=2.46 and 1.0) than eccentric (E60°/s=3.94 and 0.85; E120°/s=4.08 and 0.89), respectively. The HR variation was similar in the four conditions studied. Conclusion: The magnitude of MAT and RMS responses in older men were dependent of the nature of the muscular action and independent of the angular velocity, whereas HR response was not influenced by these factors. © Revista Brasileira de Fisioterapia. |
publishDate |
2011 |
dc.date.none.fl_str_mv |
2011-01-01 2022-04-28T22:36:59Z 2022-04-28T22:36:59Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1590/S1413-35552011005000004 Revista Brasileira de Fisioterapia, v. 15, n. 1, p. 8-14, 2011. 1413-3555 1809-9246 http://hdl.handle.net/11449/226288 10.1590/S1413-35552011005000004 2-s2.0-79953238504 |
url |
http://dx.doi.org/10.1590/S1413-35552011005000004 http://hdl.handle.net/11449/226288 |
identifier_str_mv |
Revista Brasileira de Fisioterapia, v. 15, n. 1, p. 8-14, 2011. 1413-3555 1809-9246 10.1590/S1413-35552011005000004 2-s2.0-79953238504 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
Revista Brasileira de Fisioterapia |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
8-14 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
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1803650188100763648 |