Comparison of the Effects of Exercises with and without Feedback on Lower Extremity Kinematics During Jump Landing Tasks in Men with Selected Motor Control Defects: A Randomized Clinical Trial

Abstract

Objective Deficient movement patterns can alter the kinematics of lower limb during landing jump tasks, potentially leading to non-contact anterior cruciate ligament injuries. The aim of this study is to investigate the impact of an eight-week kinematic feedback training program on male athletes exhibiting selected movement control issues during jumping tasks. Methods This study is a randomized clinical trial conducted before and after the intervention. Thirty-four male recreational athletes with movement control deficiencies were chosen based on predetermined criteria and randomly assigned to either a control or feedback group in a 1:1 ratio. Kinematic variables were recorded in the sagittal and frontal planes while participants performed jumping and landing tasks before and after a two-month jump training program, with feedback provided to the feedback group and not to the control group. Data analysis utilized two-way analysis of variance and Bonferroni tests for each movement task, with significance set at P < 0.05. Results Results from the statistical analysis revealed that the eight-week feedback training program significantly influenced hip, knee, and ankle kinematics in athletes with motor control deficiencies during jump-landing tasks. Additionally, feedback was effective in reducing knee valgus. Conclusion The findings demonstrate that feedback effectively impacts kinematic parameters in both sagittal and frontal planes, suggesting its potential utility in correcting incomplete movement patterns during jump-landing tasks.

Keywords

• external feedback
• motor control deficiency
• kinematics
• dynamic knee valgus
• jump-landing