Effect of Motor Learning Strategies Exercises on Peak Hip Abduction Moment, Peak Knee Valgus Angle and Performance in Active Participants

Previous studies indicated that anterior cruciate ligament demage prevention programs have been successful in the short term. Motor learning strategies with an internal focus (IF) to body movements have traditionally been utilized, but may be less suitable than an external focus (EF) for the acquisition and control of complex motor skills required for sports. The purpose of the current study was to investigate the effect of feedback training on kinetic, kinematic, and functional factors of active subjects.

A total of 24 men (age 24.83±2.77 years, height 176.79±4.05 cm, and mass 72.20±9.30 kg) were randomly assigned to feedback and control groups. Participants completed feedback training for 8 weeks. Peak knee valgus angle was measured using 3D motion analysis during landing and peak hip abduction moment measured using isokinetic set as well as functional movement was measured by triple hop cross test. For data analysis repeated measure analysis of variance, independent-sample, and paired t tests were used.

Our findings revealed that feedback training caused significant differences in peak hip abduction moment (P=0.004) and triple hop cross test (p=0.005). However, there was no effect on peak knee valgus (P=0.117).

Our study confirms large effect size of feedback training on peak hip abduction moment and functional movement of participants. Therefore, it is recommended to use the feedback training by coaches and athletes to prevent the anterior cruciate ligament demage and increase athletic functional performance.