Influence of lateral pelvic movement exercises on hip joint muscle activity

Abstract

[Purpose] The purpose of this research is to compare the influence of various standing postures on the pelvic movement direction and gluteus medius activity of the opposite side with the pelvis fixed by passive resistance during lateral pelvic movement exercises, in order to gain electromyographic evidence for closed kinetic chain (CKC) exercise methods for hip abductor muscle training. [Subjects] The subjects were 20 healthy adults. [Method] The exercise task of moving the pelvis laterally to the left was performed with both thighs internally rotated, externally rotated, and in the neutral position, with maximum load and a load of half the body weight on the right leg. [Result] The muscle activity of the right gluteus medius was greatest when the movement task was performed with internal rotation of the thighs and maximum load. [Conclusion] Even though the exercise of moving the pelvis laterally with the pelvis fixed in one-leg standing is difficult, its possibility in abductor muscle CKC training is electromyographically supported.