Effects of a Bridge Exercise with Added Motion on Muscle Activity and Pelvic Angle in Young Male Adults with Uncontrolled Lumbopelvic Rotation

Abstract

This study aimed to investigate the effect of a bridge exercise with added motion on muscle activity and pelvic angle in young male adults with uncontrolled lumbopelvic rotation. Twenty young male adults with uncontrolled lumbopelvic rotation were randomly assigned to a bridge exercise group with hip abduction and a bridge exercise group with pelvic rotation. The subjects participated in the designated training for 20 min a day, five times a week. The intervention lasted two weeks, and both groups were instructed to refrain from exercise other than training during the two-week intervention period. The muscle activity of the internal oblique muscle and the rectus abdominis muscle was measured on the leg lifting side, and the external oblique muscle on the supporting side. Data were collected from the subjects. The results showed that both groups significantly increased the muscle activity of the internal oblique muscle and the external oblique muscle, and that the pelvic rotation angle significantly decreased. Similar to the existing one-leg bridge exercise with hip abduction, the one-leg bridge exercise with pelvic rotation increased the activity of the muscles related to rotation and decreased the rotation angle of the pelvis. Therefore, the one-leg bridge exercise with pelvic rotation can be an effective method for reducing lumbopelvic instability.