Estudo biomecânico comparativo de aspectos cinemáticos do andar de judocas / Study biomechanics the aspect kinematics of judo athletes gait

RESUMO

The main purpose of lhe present study was to analyze the kinematics of judo athletes gait and to compare their kinematic patterns to those of healthy and sedentary subjects. We also described the anthropometric and postural parameters of Judo athletes in order to find a relationship with their sport practice. The Judo group was composed of 5 healthy university athletes (20.7±1.7 years old, 75.6± 15.2 kg, 172.8±9.7cm height and 13±1.9 years of practice). The subjects signed an agreement term and then participated in an experimental protocol which consisted of 4 stages. Initially, they answered a questionnaire regarding their training history and past injuries. In the second stage. anthropometric measures were taken, such as their Cormic Index to obtain important information about the subject proportionality (mean CI.53.6±1.9) and the BMI. Their posture was evaluated by observation in the third stage. The Judo athletes presented their knee varum, trunk rotation and scoliosis. In the last stage, we evaluated gait kinematics using the Motion Analysis System. The subjects were asked to walk naturally along an established route of approximately lO m in length while being filmed by optical-electronic cameras. The joint angles, step and stride length, velocity and temporal aspects during gait were represented as mean and standard deviation. The statistical comparative analysis was done using the t test and lhe level of significance was established by PC< 0.05. The results indicated that there were no signiflcant differences between control and Judo groups considering the linear parameters of the gait. But there were significant differences between groups considering angular aspects of the gait. We also observed higher variability (coefficient of variation) in joint angles during the Judo gait. The data analysis allowed us to suggest that there seems to exist a relationship between Judo athletes posture andtheir gait pattern, highlighted by their kinematic parameters