The effect of German Knee Association training program (STOP X program) on knee condition and balance of adolescent soccer players with dynamic knee valgus

This study aimed to determine the effect of the German Knee Association training program on knee alignment and balance of adolescent soccer players with dynamic knee valgus. In this study, 30 adolescent soccer players with dynamic knee valgus defects were randomly divided into control and training groups. In this study, the squat test, landing-jump test, bass stick, and Y balance test were used to evaluate the variables. After determining the variables in the pre-test, the subjects in the training group performed Stop X exercises for 8 weeks, and the control group participated in the team's physical fitness program during this period. To investigate the differences, the paired t-test, ANCOVA test was used at a significance level of 0.05. In terms of intergroup comparison, a significant difference was observed between the control and training groups in all variables (except for the knee flexion variable at the moment of impact) (p ≤ 0.05). According to the results, it can be concluded that Stop X exercises have affected these people. Instructors and specialists are recommended to use this program to prevent injuries.