earticle

영어

The aim of this study was to determine the effects of resistance direc-tion in hip joint stabilization exercise on change in lateral abdominal muscle thickness in healthy adults. Twenty-six healthy adults were ran-domly allocated to either a hip stabilization exercise by hip straight re-sistance group (n=12) or a hip diagonal resistance group (n=14). The outcome measures included contraction thickness ratio in transversus abdominis (TrA), internal oblique (IO) and external oblique, and TrA lat-eral slide were assessed during the abdominal drawing-in maneuver by b-mode ultrasound. The researcher measured the abdominal muscle thickness of each participant before the therapist began the interven-tion and at the moment intervention was applied. There was a signifi-cant difference in lateral abdominal muscle thickness between the straight resistance exercise of hip joint group and the diagonal resis-tance exercise of hip joint group. Significant differences were found between the two groups in the percentage of change of muscle thick-ness of the TrA (P=0.018) and in the thickness ratio of the TrA (P=0.018). Stability exercise accompanied by diagonal resistance on the hip joint that was applied in this study can induce automatic contraction of the IO and TrA, which provides stability to the lumbar spine.