Rapid hamstrings/quadriceps strength capacity in professional soccer players with different conventional isokinetic muscle strength ratios

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Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorGreco, Camila C.-
Autor(es): dc.creatorda Silva, Wendell L.-
Autor(es): dc.creatorCamarda, Sérgio R.A.-
Autor(es): dc.creatorDenadai, Benedito S.-
Data de aceite: dc.date.accessioned2025-08-21T21:20:11Z-
Data de disponibilização: dc.date.available2025-08-21T21:20:11Z-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2012-09-01-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/227005-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/227005-
Descrição: dc.descriptionMuscle strength imbalance can be an important factor in hamstrings muscle strain. A hamstrings/quadriceps (H/Q) strength ratio based on concentric peak torque values (H con:Q con) has traditionally been used to describe the potential for knee-joint destabilization. Because certain standard actions in soccer are explosive, the analysis of the H/Q strength ratio based on the rate of torque development (H rtd:Q rtd) might also be useful in the evaluation of joint stability. The objective of this study was to compare the H rtd:Q rtd between professional soccer players with heterogeneous values of H con:Q con. Thirty-nine professional soccer players took part in the following procedures on different days: 1) Familiarization session with the isokinetic dynamometer, and 2) Two maximal isometric actions and five maximal concentric actions at 60°·s-1 for hamstrings (H) and quadriceps (Q). Participants were ranked according to their H con:Q con ratio. The median third was excluded to form a high torque group (HTG), and a low torque group (LTG). Peak isometric (H) and concentric (H and Q) torques and rate of torque development (H) were significantly greater in the HTG group. Similarly, H con:Q con (0.68 ± 0.02 vs. 0.52 ± 0.03) and H rtd:Q rtd (0.54 ± 0.12 vs. 0.43 ± 0.16) were significantly greater in the HTG group than in the LTG group. There was no significant correlation between H con:Q con and H rtd:Q rtd. It can be concluded that H con:Q con and H rtd:Q rtd are determined, but not fully defined, by shared putative physiological mechanisms. Thus, the physiologic and clinical significance of H con:Q con and H rtd:Q rtd to an athlete's individual evaluation might be different. © Journal of Sports Science and Medicine (2012).-
Descrição: dc.descriptionHuman Performance Laboratory UNESP, Av. 24A, 1515, Bela Vista, CEP 13506-900, Rio Claro, SP-
Descrição: dc.descriptionHuman Performance Laboratory UNESP, Av. 24A, 1515, Bela Vista, CEP 13506-900, Rio Claro, SP-
Formato: dc.format418-422-
Idioma: dc.languageen-
Relação: dc.relationJournal of Sports Science and Medicine-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectInjury-
Palavras-chave: dc.subjectIsometric action-
Palavras-chave: dc.subjectMuscular torque-
Título: dc.titleRapid hamstrings/quadriceps strength capacity in professional soccer players with different conventional isokinetic muscle strength ratios-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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