만성 발목 불안정성에 대한 엉덩관절 훈련프로그램이 자세제어와 발목기능에 미치는 영향

Abstract

This study aimed to investigate the effects of hip joint training on static and dynamic posture control and ankle joint function in individuals with chronic ankle instability (CAI) and to provide useful information on various rehabilitation strategies. A total of 25 subjects who met the criteria for International Ankle Consortium were participated in this study and they were applied 6-week training program consisting of neuromuscular training and hip (EG, n=12) or ankle (CG, n=13) joint training program. Before and after applied 6-week training program, the static and dynamic posture control and ankle joint function on their injured leg were examined. The static posture control consisted of total length (TL), sway velocity (SV), and envelope area (ENV) of the conter of pressure (COP) on stable and unstable surface with eyes open and closed, and lower quarter Y-balance test (YBT-LQ) was performed to measure dynamic posture control. The ankle joint function was tested using 4 hop tests. The result is as follows :

1. After 6-week training program, the TL and SV of COP in both groups were significantly reduced during one leg standing on stable surface with eyes closed. And in only CG, they were significantly reduced on unstable surface with eyes closed.

2. The ENV of COP in only CG was reduced during both one leg standing on stable and unstable with eyes closed after 6-week training program. And after the training program, it of CG was lower compared to EG.

3. The score of YBT-LQ after the application of 6-week training program was significantly higher in both EG and CG.

4. After 6-week training program, the ankle joint function using 4 hop test was improved in both EG and CG.

This study showed that 6-week hip training program improved the static and dynamic posture control and ankle joint function similar to conventional ankle training, and the hip training program had a positive effect on chronic ankle instability (CAI).