남자 발레 무용수의 점프 동작에 관한 운동학적 분석

Abstract

For kinematic analysis on ballerino's jump motions, this study analyzed those in 2 ballerinos with height below 175 cm and the other 2 ballerinos with height over 180 cm, which all had 10- to 16-year dance career and acted as professional dancer for U ballet company without any physical damage as of this research. Here, their upright jump motion at second position was subdivided into motion 1, 2 and 3 according to jump type for imaging analysis. As a result, this study came to the following conclusions: 1. For time spent in each section, Phase 1 of Motion 1 took longest time of all, while Phase 4 of Motion 3 took shortest time of all. For off-the-ground time, Motion 3 took longest time of all, while Motion 2 took shortest time of all. 2. For horizontal displacement resulting from COG placement, Event 3 of Motion 3 showed furthest displacement. For sagittal displacement, Event 2 of Motion 1 and 2 as well as Event 5 of Motion 3 showed furthest displacement of all. And for perpendicular displacement, Subject A and B with relatively low stature showed further displacement in Phase 2 and 3 of Motion 3. 3. All the four subjects hereof showed deeper knee angle at landing moment than at jumping moment. In addition, Subject A and B showed deeper knee angle at landing moment than Subject C and D. Summing up, it was found that upon jumping motions according to No. 2 position upright jump, 2 ballerinos with height below 175cm showed shorter off-the-ground time than other 2 ballerinos with height over 180cm, but upon motions of Temps Leves Sautes Battus in Motion 3, the former ballerinos showed their COG lifted upward vertically across Phase 2 and 3, while the latter ballerinos performed motions with their COG decreasing downward across Phase 2 and 3. In addition, Motion 1 took total time comparable to Motion 3, but Motion 2 took the shortest total time of all. All the four ballerinos, whether they have height below 175cm or over 180cm, showed lower knee and hip joint angle of demiplie in landing section than in jumping section of Motion 1, 2 and 3. Conclusively, it was found that ballerinos with relatively low stature performed battu motions with gradually higher perpendicular movement rapidly but in short off-the-ground time, and took advantages of timing margin in landing motions so that they could take most ideal temps leve saute motions in esthetic aspect. On the other hand, ballerinos with relatively high stature jumped upright well with battu motions even in longer off-the-ground time, but failed to perform ideal temps leve saute motions in esthetic aspect, mainly because of insufficient timing margin in landing, compared to ballerinos with relatively low stature.