Análise isocinética das variáveis adicionais e tradicionais em jogadores de futebol amador ; Isokinetic analysis of additional and traditional variables in amateur soccer players

Introduction: Muscle imbalance in soccer players is considered a risk factor for injuries. In order to better elucidate the muscle performance analysis, the additional variables of peak torque angle, acceleration time and time to peak torque, and traditional peak torque, total work, power and extracted hamstring/quadriceps ratio were used. of the isokinetic test. Objectives: The aim of this study is to compare the isokinetic performance of the knee extensor and flexor muscles between the dominant and non-dominant sides and between different positions on the field of amateur soccer players, considering traditional and additional variables. Methodology: Fifty-five athletes performed maximal isokinetic concentric knee contractions on the dominant (LD) and non-dominant (LND) side at 60º/s and 240º/s. The positions were considered: goalkeepers, defenders, midfielders and attackers. Results: Comparisons between limbs by positions showed that goalkeepers' dominant side extensors had greater power (p value = 0.009) and attackers' dominant side flexors had greater total work (p value = 0.046) and power (p value = 0.006). at 60°/s. While the flexors on the dominant side of defenders (p = 0.042) and midfielders (p = 0.003) showed greater acceleration time at 240°/s. Conclusion: amateur soccer players have muscle imbalances between sides but not between positions on the field. ; Introdução: O desequilíbrio muscular em atletas de futebol é apontado como fator de risco para lesões. A fim de melhor elucidar a análise de desempenho muscular, foram utilizadas as variáveis adicionais de ângulo de pico de torque, tempo de aceleração e tempo para pico de torque, e tradicionais de pico de torque, trabalho total, potência e relação isquiotibiais/quadríceps extraídas do teste isocinético. Objetivos: o objetivo deste estudo é comparar o desempenho isocinético dos músculos extensores e flexores do joelho entre os lados dominante e não dominante e entre as diferentes posições em campo de jogadores amadores de futebol, considerando as ...