effect of a four-week core stability training program on the kinetic parameters in athletes with functional ankle instability during single-leg drop landing

Introduction: this study aimed to investigate the effect of a 4-week core stability training program on landing kinetic parameters in athletes with functional ankle instability during a single-leg drop landing exercise. methods: this study used a pre-post quasi-experimental design and was conducted in the biomechanics laboratory. a total number of 24 athletes with functional ankle instability participated in two experimental (n=12) and control (n=12) groups. the experimental group performed core stability training for 4 weeks. the kinetic variables (maximum vertical ground- reaction force [grf], maximum shear grf, and time to peak vertical grf) were measured with force plate at the frequency of 400 hz, in the pre-test and post-test. the obtained data were compared using analysis of covariance (ancova) and multivariate analysis of covariance mancova in spss v. 18. results: in the experimental group, all variables significantly differ between the pre-test and posttest. also, the ancova and mancova indicated significant differences between the experimental and control groups in all variables. conclusion: the results indicated that the core stability training improved the kinetic parameters of landing in people with functional ankle instability; thus, it can reduce the reinjury risk of the ankle.