Torque, sinal eletromiográfico e respostas da frequência cardíaca durante exercícios concêntrico e excêntrico em homens idosos

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Autor(es): dc.contributorUniversidade Federal de São Carlos (UFSCar)-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorUniversidade Metodista de Piracicaba (UNIMEP)-
Autor(es): dc.creatorQuitério, Robison J.-
Autor(es): dc.creatorMelo, Ruth C.-
Autor(es): dc.creatorTakahashi, Anielle C. M.-
Autor(es): dc.creatorAniceto, Isabela A. V.-
Autor(es): dc.creatorSilva, Ester-
Autor(es): dc.creatorCatai, Aparecida M.-
Data de aceite: dc.date.accessioned2025-08-21T22:00:16Z-
Data de disponibilização: dc.date.available2025-08-21T22:00:16Z-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued2011-01-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1590/S1413-35552011005000004-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/226288-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/226288-
Descrição: dc.descriptionBackground: 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.-
Descrição: dc.descriptionPhysical Therapy Department Universidade Federal de São Carlos (UFSCar), São Carlos, SP-
Descrição: dc.descriptionSpecial Education Department Universidade Estadual Paulista 'Julio de Mesquita Filho' (UNESP), Marilia, SP-
Descrição: dc.descriptionFaculty of Health Sciences Universidade Metodista de Piracicaba (UNIMEP), Piracicaba, SP-
Descrição: dc.descriptionSpecial Education Department Universidade Estadual Paulista 'Julio de Mesquita Filho' (UNESP), Marilia, SP-
Formato: dc.format8-14-
Idioma: dc.languagept_BR-
Relação: dc.relationRevista Brasileira de Fisioterapia-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectElderly-
Palavras-chave: dc.subjectExercise-
Palavras-chave: dc.subjectHeart rate-
Palavras-chave: dc.subjectIsokinetic-
Palavras-chave: dc.subjectSurface electromyography-
Título: dc.titleTorque, sinal eletromiográfico e respostas da frequência cardíaca durante exercícios concêntrico e excêntrico em homens idosos-
Título: dc.titleTorque, myoeletric sygnal and heart rate responses during concentric and eccentric exercises in older men-
Tipo de arquivo: dc.typelivro digital-
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