comparison of the effect of linear and nonlinear pedagogy on risk factors of acl injury: emphasis on kinetic variables in basketball landing

In this study, the effect of linear and non-linear training methods on kinetic variables in basketball landing was investigated, and changes in force and moment from pre-test to post-test were evaluated. the present study was a quasi-experimental experiment, and clinical research method. participants were 24 students who were selected from kharazmi university by available methods. they practiced basketball skills in two groups of linear and non-linear for 16 sessions. in the linear method, the presentation of patterns and feedback was used for training, and in the non-linear method, the manipulation of constraints was used. the variables measured included vgrf, knee flexion/extension moment, knee valgus moment, and ankle dorsiflexion moment. the results of the covariance analysis showed that the nonlinear method has a significantly better effect on all kinetic variables compared to the linear method (p<0.05). the results of this study consider nonlinear methods as an effective strategy in clinical settings, and emphasize on the role of constraint manipulation in practice and learning environments, and highlight that nonlinear methods, with focusing on exploration and search for solutions, to prevent acl injuries efficiently by affecting kinetic variables.