드롭랜딩 시 만성적인 발목관절불안정성에 대한 운동역학적 특성 비교

Abstract

The purpose of this study was to compare the kinetic variables between both legs during drop landing in chronic ankle instability individuals. Fifteen individuals with chronic ankle instability(right leg) performed five repetitions of a single leg landing task. Furthermore, the analyzed variables included the peak vertical force(PVF), elapsed time, and the dynamic postural stability index (DPSI; medial-lateral [ML], anterior-posterior [AP], and vertical [V]) in the initial contact phase. Paired t-tests were used to compare variables between both legs. The Elapsed time to the PVF in CAI leg(right) showed more less time than that of the normal leg(left). Also, PVF showed increased higher force at CAI than that of normal leg. MLSI, APSI, and DPSI showed higher index at CAI than that of normal leg during drop landing. It is understandable to protect tissues from mechanical injuries by the sacrifice of certain postural stability in CAI leg. Identifying these potential differences may enable clinicians to assess chronic ankle instability and design rehabilitation protocols specific to the impairment.