The Effect of Corrective Feedback Exercise on Knee Kinematics and EMG of Lower Limbs of Female Wushu Players

Fahimeh Rashidi; Abdolrasoul Daneshjoo; Seyed Kazem Mousavi Sadati

doi:10.18502/jmr.v14i4.7721

Fahimeh Rashidi Department of Physical Education and Sport Sciences, East Tehran Branch, Islamic Azad University, Tehran, Iran.
Abdolrasoul Daneshjoo Department of Sport Science and Physical Education, East Tehran Branch, Islamic Azad University, Tehran, Iran.
Seyed Kazem Mousavi Sadati Department of Sport Science and Physical Education, East Tehran Branch, Islamic Azad University, Tehran, Iran.

DOI: https://doi.org/10.18502/jmr.v14i4.7721

Keywords: Feedback correction exercises, Knee kinematics, Knee varus, EMG

Abstract

Introduction: Recent studies have examined the risk factors associated with lower limb injuries. This study aimed to explore the effect of 12 sessions of feedback corrective exercises on the kinematic indicators of the knee and the Electromyography Activity (EMG) of the muscles of the lower limbs of female wushu players. The present study has a quasi-experimental design with a pre-test/post-test design and a control group.

Materials and Methods: In this study, 16 female wushu players were selected by the available sampling method and placed in two groups of exercise and control. The exercise group performed feedback correction exercises for 12 sessions. Before and after the knee varus exercises, we measured, pelvic drop, and EMG of the lower limb muscles of both groups in the SLS movement. The independent two-sample t-test was used to examine intergroup differences and the two-group correlated t-test was used to compare intra group sizes. To analyze the statistical data, SPSS V. 23 was used (P≤0.05)

Results: The results showed a significant difference in knee varus between the experiment group and the control group in the pre-test and there was a significant difference between the pelvic drop in the pre-test and post-test of the experiment group compared with the control. The angle of the knee varus in the exercise group showed a significant difference with the control group. The EMG results of the muscles in the pre-test and post-test were significantly different.

Conclusion: Based on the findings of the present study, the feedback correction exercise may improve motion control in wushu players. It also improved neuromuscular weakness in the subjects. According to the results and based on less muscle activity during movements, this exercise will reduce fatigue and the risk of injury.