드롭 랜딩 시 팔의 위치에 따른 발레 무용수들의 하지분절 충격흡수 전략 차이

Abstract

Purpose: The purpose of this study is to investigate the difference rthough analysis of kinematic and kinetics variables to determine how ballet dancers absorb the impact on the human body during drop landing to minimize injury.BR Method: Twelve female ballerinas in their twenties (age: 21.83±1.85 years, height: 161.82±4.86㎝, weight: 51.47±6.55㎏, experience: 9.67±2.77 years old) who were familiar with jumping and landing movements were studied. To analyze the motion of the lower extremity for the drop landing motion, a 3D motion analysis was performed using 18 infrared cameras (Qualasiys7+, SWE), and the ground reaction force was obtained using a ground reaction force measuring device (Kistler 9287BA).BR Results: The results of this study are as follows. 1) There was a stisatically significant difference in the maximum and minimum angles of the hip joint during single-leg rdop landing according to the position of the arm (p＜.05). 2) There was a statistically significant difference in the range of motion of the hip joint during single-leg drop landing according to the position of th earm (p＜.05). 3) There was a statistically significant difference in ankle angular velocity during single-leg drop landing according to the position of the arm (p＜.05). 4) There was no statistically significant difference in the amount of change in the moment of the lower extremity joint during single-leg drop landing according to the position of the arm (p＞.05). 5) There was no statistically significant difference in the maximum ground reaction force value during singleleg drop landing according to the position of the arm (p＞.05).BR Conclusion: Therefore, as a result of this study, there was no differenc ein both feet during one drop landing depending on the position of the arm, and it seems that the ballet dancer makes a stable landing by increasing the flexion movement of the hip joint.