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
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.
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.
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.
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