The comparison of the amount of EMG activity of the selected involved muscles in hip strategy in female athletes while standing on one leg on shuttle balance and wobble board

Use of shuttle balance which has recently been produced in Iran seems to be beneficial in exercise programs for prevention of sports injuries and facilitating recovery. The purpose of this study was to compare the amount of the electromyography activity of the muscles involved in hip strategy while standing on one leg on shuttle balance and wobble board. In this comparative study we measured the amount of EMG activity of selected muscles (rectus femoris, hamstring, rectus abdominis and erector spine, as the most important involved muscles in hip strategy), in 15 female students of faculty of physical activity and sport sciences of Tehran university by surface electromyography during standing on one leg on shuttle balance and wobble board. The findings were compared using multivariate variance analysis. The results showed a significant difference between shuttle balance and wobble board in regard to the amount of EMG activity of involved muscles in hip strategy(P=0.001). Also the results showed that the rectus abdominis muscle on wobble board and the rectus femoris and hamstring muscles on shuttle balance had significantly more electromyography activity (P<0.05). There was no significant difference in erector spine EMG activity between the two devices (P>0.05). It seems that standing on shuttle balance can lead to higher electromyography activity in the muscles of knee joint (rectus femoris and hamstring). So we recommend use of shuttle balance in balance training programs.