장애인 크로스컨트리 스키 5km 경기 시 남자 좌식 선수의 스키동작에 대한 운동학적 요인 평가
Kinematic Parameters Assessment on Skiing Motion of Male Sit Athletes during a 5km Ski Cross Country Race
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초록
본 연구는 크로스컨트리 스키 좌식 경기 시 남자 좌식 선수들의 스키 동작에 대한 운동학적 분석을 통하여 경기력 관련 스키동작 요인을 규명하고자 하였다. 자료 수집은 2016년 평창 노르딕 스키 아시안컵 대회의 2.5km 순환 코스에서 이루어진 5km 좌식 경기를 대상으로 하여 이루어졌다. 자료 분석을 위해 평지 구간과 오르막구간 (9.0°)의 주로에 수직이 되도록 비디오카메라를 설치하여 선수들의 동작을 촬영하였다. 경기에 참여한 9명 선수 중 LW 12 등급 선수 5명에 대하여 동작분석이 이루어졌다. 각 선수들의 랩 구간별 운동학적 변인의 차이를 규명하기 위해 Wilcoxon 부호순위검정을 실시하였다. 평지 구간에 비하여 오르막 구간에서 속도, 거리, 시간이 감소하였으며 푸시거리 비율과 푸시시간 비율은 증가하였다(P<.05). 1st 랩 구간과 2nd 랩 구간의 운동학적 변인들의 차이는 푸시시간의 비율 이외에는 차이가 없는 것으로 나타났다. 평지구간에서 사이클 시간, 몸통각도, 팔꿈치 각도와 평균속도 간에 상관관계가 있는 것으로 나타났다(p<.05). 기록향상을 위해서는 이러한 운동학적 변인들을 향상시키기 위한 지속적인 기술 연습 및 트레이닝이 필요하다.
Abstract
The purpose of this study is to investigate the kinematic analysis of the skiing behavior of the male athletes during cross - country skiing. The data collection was conducted on a 5 km left-lap race at the 2016 Pyeongchang Nordic Ski Asian Cup in a 2.5 km round course. For data analysis, a video camera was installed perpendicular to the flat section and the uphill section (9.0 °). The motion analysis was performed on 5 players of LW 12 class among 9 players who participated in the game. The Wilcoxon sign rank test was used to determine the differences in the kinematic variables of each athlete. The speed, distance, and time decreased in the uphill section compared to the flat section, and the push distance ratio and the push time ratio increased (P <.05). The difference between the kinematic variables of 1st lap and 2nd lap was not different except the ratio of push time. There was a correlation between cycle time, trunk angle, elbow angle and mean velocity in the flat zone (p <.05). Continuous skills training and training to improve these kinetic variables are needed to improve the record
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