Effect of basketball match simulation on peak torque and functional torque ratio of stabilizing muscle of the ankle

• Autor(a) principal: Castro, Alex
• Data de Publicação: 2012
• Outros Autores: Crozara, Luciano Fernandes, Karuka, Aline Harumi, Spinoso, Déborah Hebling, Hallal, Camilla Zanfolini, Marques, Nise Ribeiro, Gonçalves, Mauro
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Revista Brasileira de Ciência e Movimento (Online)
• Texto Completo: https://portalrevistas.ucb.br/index.php/rbcm/article/view/2390
• topic: Exercício

The aim of this study was to analyze the effect of Basketball match work simulation on peak torque (PT) of ankle evertor and invertor muscles and on eccentric evertor/concentric invertor torque ratio (EVEECC/INVCON). Ten healthy college basketball players, without mechanics or functional ankle instability performed a laboratory-based protocol representative of work rates observed during basketball match-play. The test was composed of a succession of intermittent physical effort equally distributed in four periods of 10 minutes each, considering the mechanical and physiological demands of a basketball match-play. Prior to the start of the trial (Evaluation 1) and after 2° (Evaluation 2) and 4° (Evaluation 3) period, the subjects performed five maximal isokinetic concentric and eccentric contractions of ankle invertors and evertors muscles, separated by two minutes rest, at 60 °/s and 120 °/s. After testing for normality of data distribution with the Shapiro-Wilk test, was used the ANOVA repeated measures and post-hoc Bonferroni test for comparison of variables between assessments. Was adopted p < 0.05. There was no significant difference for EVEECC/INVCON torque ratio between assessments. However, there was a decrease in PT EVEECC at 60º/s and 120º/s for the Evaluation 2 when compared to Evaluation 1. There was a reduction of PT INVCON values in relation to Evaluation 1, compared to Evaluation 2 at 60°/s and to Evaluation 3 at 120°/s. Given these results, we conclude that the progress of simulation basketball match-play lead a reduction on PT of the ankle evertors and invertors muscles. Key words: Sprains and Strains; Muscle Strength; Joint Instability; Isokinetic Dynamometer.