쇼트트랙 스피드 스케이트 운동 시 하지 관절각 분석

Abstract

A Study on Joint Angle of Lower Extremity during Short Track Speed Skating

Jung Hoon Park

Department of Physical Education The Graduate School Pukyong National University Directed by Professor Yong Jae Kim Ph. D.

Abstract

This study, which is conducted on two groups of skilled people and unskilled people, is purposed to analyze joint angle of lower extremity during short track speed skating, in order to find out efficient body position and propose ideal training method. Targeting 8 people who are skilled in short track speed skating and 8 people who are not skilled in it, this study analyzes three dimensional images using super-high speed camera to compare differences between these two groups of people. In this study, 6 sections of body positions including right foot push-off, right foot recovery, right foot basic position, left foot push-off, left foot recovery, and left foot basic position were analyzed using 8 super-high speed cameras of VICON. These body positions were analyzed in order to find out joint angles of the hip joint, the knee joint, and the ankle joint. As a result of the analysis, it was found out that there were differences between groups of skilled people and unskilled people in terms of lower extremity's joint angles such as angles of the hip joint, the knee joint, and the ankle joint.

1. It was detected that there was no significant difference in terms of the angle of the hip joint, but the section 4 of the inner and outer parts of the left hip angle showed significant difference (p＜ .05).

2. As to the angle of the knee joint, most of the sections exhibited significant difference (p＜ .01), and the section 1 of the right kneed joint (inner part/outer part) showed significant difference (p＜ .001). However, the section 4 and 5 of the left knee joint presented no significant difference.

3. In the case of the angle of the ankle joint, there was no significant difference between the plantar flextion and the dorsiflextion of left and right ankle joints. But, the section 1 and 2 of the plantar flextion and the dorsiflextion of left and right ankle joints showed significant difference (p＜ .001).