OBJECTIVE: to evaluate the performance of isokinetic muscle extensor and flexor of the knee in athletes of futsal in DO and ND members. METHODS: 23 athletes, with age 27.1 ± 3.6 years, body mass 72.7 ± 12.6kg and height 1.75 ± 6.7m participated of study. Were performed 6 maximum repetitions at 60, 120, 180 e 300º.s-1 speeds, in ascending order on the isokinetic dynamometer. We evaluated peak torque (PT), normalized PT (PTN), medium PT (PTM), mean power (MP), total work of repetition maximum (TTRM) and total work (QTT). RESULTS: in flexion movement, the PM 180º.s-1 was 6.7% higher in the DO member (p < 0.05). In extension the ND was higher than the DO (p < 0.05), as follows: PT 60º.s-1 (+7,6%), PTN 60º.s-1 (+7,0%), TTRM 120º.s-1 (+6,0%), PM 60º.s-1 (+6,6%) e 120º.s-1 (+5,2%), QTT 60º.s-1 (+6,9%) e 120º.s-1 (+7,5%) e PTM 60º.s-1 (+7,3%) e 120º.s-1 (+5,2%). Except for PM and TTRM all variables showed higher performance to 60º.s-1. CONCLUSION: despite the differences between DO vs ND, these differences did not predispose the incidence of injuries.
Athlete; muscular strength; power; muscular imbalance; knee
