Mechanical impacts analysis in judoists body of different weight categories

This study aimed to analyze the impacts generated in different body regions of judoists of different weight categories during falls cushioning. Four black belt judoist, with at least 14 years of experience, participated in this study: three “uke” half-light, half-middle and half-heavy categories were thrown in “ippon-seoi-nage” technique by a “tori” with 77 kg. A triaxial Brüel and Kjaer accelerometer was alternately fastened with straps in the “uke” fist, hip and ankle to verify the impacts. Descriptive statistics, one way ANOVA and Tukey test were applied, with p≤0.05. The bigger impact magnitudes occurred in vertical axis, in the fist and for the half-middle category judoist; the impact times were larger in the hip for all athletes and in vertical axis. According to Macaulay criteria, the impact values founded represents severe injury risks in fist and ankle and moderate risk in judoists hip. Initiatives should be taken to reduce the damage due to impact during judo training and competitions.