컴퓨터 디자인 기반 모노스키 버킷 사용에 따른 장애인 알파인 스키 선수의 운동학적 특성 변화 연구: 사례 연구

Abstract

ssistive Technology Service Center of Seoul, Republic of KoreaReceived 15 November 2014 Received in revised form 3 December 2014 Accepted 10 December 2014 ABSTRACT The purpose of the study was to investigate the effect of CAD (Computer Aided Design) based alpine mono-ski bucketdesign on disabled ski athletes’ kinematic characteristics. Two national team ski athletes with LW11 disabilities (Loco-motion Winter Classification) category for sit ski participated in both pre and post experiment. Both of the subjects per-formed 3 trials of carved turn on a ski slope under two conditions. Where, subject “A” performed pre experiment withpersonal bucket and post experiment with the newly developed CAD based bucket whereas, Subject “B” as control subjectperformed both pre and post experiment with his personal bucket. For the experiment, 24 Infrared cameras were positionedon the ski slope which covered the path of the ski turn. Also, motion capture suit with reflective markers were worn byboth subjects. In the result, decrement in medial/lateral displacement of COM, anterior/posterior displacement of COM,flexion/extension angle of trunk as well as velocity losing rate of COM was observed in subject “A” when using the newlydeveloped CAD based bucket. In contrast, no larger effect on performance was observed when using personal buckets. Inconclusion, the findings obtained from the study indicated effectiveness of newly developed CAD based bucket by reducingexcessive movement of hip and trunk which is an important factor to perform an effective turn. Keywords :