Publicado
15-01-2024

Conventional Ratio of Knee Flexors and Extensors Obtained Using an Isokinetic Dynamometer and Isoinertial Devices

Relación convencional de flexores y extensores de la rodilla obtenida mediante un dinamómetro isocinético y dispositivos isoinerciales

Rácio flexor-extensor do joelho convencional obtido a partir de um dinamómetro isocinético e de dispositivos isoinerciais

DOI: https://doi.org/10.15332/2422474X.9708
Igor Leandro da Silva Carvalho
Danielli Braga de Mello
Rugero Anderson Vaz Bulzing
Giullio César Pereira Salustiano Mallen da Silva
Juliana Brandão Pinto de Castro
Jurandir Baptista da Silva
Vicente Pinheiro Lima
Guilherme Rosa
Rodolfo de Alkmim Moreira Nunes
Rodrigo Gomes de Souza Vale

Resumen (es)

Este estudio tuvo como objetivo analizar los valores de relación convencionales de flexores y extensores de rodilla obtenidos mediante dinamometría isocinética (IsoRatio), torque ajustado en la prueba de 5RM (Ratio5RM) y valores absolutos de 5RM (Ratio5RML). Quince varones (28.47 ± 5.78 años; 78.30 ± 6.59 kg; 1.79 ± 0.65 m) realizaron un test de 5RM en máquinas de extensión y curl de piernas. Los movimientos de flexión y extensión de la rodilla se realizaron a una velocidad angular de 60°/s. No hubo diferencias entre los protocolos. El análisis de regresión mostró que la Ratio5RML se correlaciona con la relación isocinética (r=0.649; p=0.009). La prueba t pareada no mostró diferencias entre los valores obtenidos de la relación isocinética y de la relación predicha por la ecuación. Los resultados sugieren que el test de 5RM realizado en máquinas isoinerciales se puede estimar la relación convencional e identificar el desequilibrio entre los músculos flexores y extensores de la rodilla.

Palabras clave (es): dinamometría isocinética, ejercicio, fuerza muscular, pruebas de repetición máxima, relación isquiotibiales a cuádriceps

Resumen (en)

This study aimed to analyze the conventional ratio values of knee flexors and extensors obtained using an isokinetic dynamometer (IsoRatio), an adjusted torque test of 5RM (Ratio5RM), and absolute values of 5RM (Ratio5RML). Fifteen male volunteers (28.47 ± 5.78 years; 78.30 ± 6.59kg; 1.79 ± 0.65m) performed a 5RM test on leg extension and leg curl machines. The volunteers executed knee flexion and extension movements at 60°/s angle speed without significant differences between protocols. Regression analysis showed that the Ratio5RML correlates with the isokinetic reference ratio (r=0.649; p=0.009). The result of the paired t-test showed no significant difference between the means of the isokinetic ratio and the ratio predicted by the equation. The results of the present study suggest that the 5RM test performed with isoinertial machines can be used to estimate conventional ratio and identify imbalance between the knee flexors and extensors muscles.

Palabras clave (en): Exercise, Hamstring to quadriceps ratio, Isokinetic dynamometry, Repetition maximum tests, Muscle strength

Resumen (pt)

Este estudo teve como objetivo analisar os valores das razões convencionais de flexores e extensores de joelho obtidos pela dinamometria isocinética (IsoRatio), torque ajustado no teste de 5RM (Ratio5RM) e valores absolutos de 5RM (Ratio5RML). Quinze voluntários do sexo masculino (28.47 ± 5.78 anos; 78.30 ± 6.59kg; 1.79 ± 0.65m) realizaram um teste de 5RM em aparelhos de extensão e flexão de joelhos, que foram realizados em velocidade angular de 60°/s. Não houveram diferenças significativas entre os protocolos. A análise de regressão mostrou que Ratio5RML se correlaciona com a razão isocinética de referência (r=0.649; p=0.009). O resultado do teste t pareado não mostrou diferença significativa entre as médias da razão isocinética e a razão prevista pela equação. Os resultados do presente estudo sugerem que o teste de 5RM realizado em máquinas isoinerciais pode ser utilizado para estimar razão convencional e identificar desequilíbrio entre os músculos flexores e extensores do joelho.

Palabras clave (pt): dinamometria isocinética, exercício, força muscular, relação isquiotibiais/quadríceps, testes de repetições máximas
Igor Leandro da Silva Carvalho, Rio de Janeiro State University

Master's in Exercise and Sport Sciences, Rio de Janeiro State University, Rio de Janeiro, Brazil. icarvalho.personal@gmail.com: https://orcid.org/0009-0007-2568-6394

Danielli Braga de Mello, Escola de Educação Física do Exército

Ph.D. in Public Health, Army Physical Education School, Rio de Janeiro, Brazil. danielli.mello@gmail.com: https://orcid.org/0000-0003-3609-0004

Rugero Anderson Vaz Bulzing, Ministério da Defesa

Ph.D. in Physical Education, Army Physical Fitness Training Center, Rio de Janeiro, Brazil. ecofisio@gmail.com: https://orcid.org/0000-0001-9249-0614

Giullio César Pereira Salustiano Mallen da Silva, Rio de Janeiro State University

Master's in Exercise and Sport Sciences, Rio de Janeiro State University, Rio de Janeiro, Brazil. giulliocesar.gc@hotmail.com: https://orcid.org/0000-0001-8701-8550

Juliana Brandão Pinto de Castro, Rio de Janeiro State University

Ph.D. in Exercise and Sport Sciences, Rio de Janeiro State University, Rio de Janeiro, Brazil. julianabrandaoflp@hotmail.com: https://orcid.org/0000-0002-5656-0782

Jurandir Baptista da Silva, Rio de Janeiro State University

Ph.D. in Exercise and Sport Sciences Rio de Janeiro State University, Rio de Janeiro, Brazil. profjurandirsilva@hotmail.com: https://orcid.org/0000-0001-6905-4822

Vicente Pinheiro Lima, Rio de Janeiro State University

Ph.D. in Exercise and Sport Sciences, Rio de Janeiro State University, Rio de Janeiro, Brazil. professorvicentelima@hotmail.com: https://orcid.org/0000-0002-7534-265X

Guilherme Rosa, Federal Rural University of Rio de Janeiro

Ph.D. in Sciences, Federal Rural University of Rio de Janeiro, Rio de Janeiro, Brazil. guilhermerosa@ufrrj.br: https://orcid.org/0000-0002-1173-5534

Rodolfo de Alkmim Moreira Nunes, Rio de Janeiro State University

Ph.D. in Health Sciences, Rio de Janeiro State University, Rio de Janeiro, Brazil. rodolfoalkmim@gmail.com: https://orcid.org/0000-0001-9707-2649

Rodrigo Gomes de Souza Vale, Rio de Janeiro State University

Ph.D. in Health Sciences, Rio de Janeiro State University, Rio de Janeiro, Brazil. rodolfoalkmim@gmail.com: https://orcid.org/0000-0001-9707-2649

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Cómo citar

da Silva Carvalho, I. L., Braga de Mello, D., Vaz Bulzing, R. A., Pereira Salustiano Mallen da Silva, G. C., Pinto de Castro, J. B., Baptista da Silva, J., Pinheiro Lima, V., Rosa, G., Moreira Nunes, R. de A., & Gomes de Souza Vale, R. (2024). Relación convencional de flexores y extensores de la rodilla obtenida mediante un dinamómetro isocinético y dispositivos isoinerciales. Cuerpo, Cultura Y Movimiento, 14(1), 59-77. https://doi.org/10.15332/2422474X.9708

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