리듬체조의 720도 에띠��드 (double pivot attitude)동작 분석 = Motion Analysis of Double Pivot Attitude Motion in the Rhythmic Sport Gymnastics

다국어 초록 (Multilingual Abstract)

The purpose of this study is to perform the basic information for improving the skill of double pivot attitude.
For this study, national champion skilled 4 female rhythmic sport gymnastics were selected as subjects.
From the cinematographic analysts to DLT, The method was used to obtain in
3-dimentional coordinates of the body landmarks.
1. As for each phase necessary time, the necessary time and total necessary time of subject JET showed 0.97 sec., 1.98 sec. from slowly than others at STR-AMX. But the subject KMT was showed necessary time 0.77 sec. total necessary time 1.87 sec. faster than others.
2. The position of knee was changed JET 102.0cm, KBY 110.8cm, KEA 94.0cm, KMJ 119.2cm to vertical direction. The position of hip joint was changed JET
107.9cm, KBY 119.4cm, KEA 109. 9cm, KMJ 124.5cm to vertical direction at LKM
3. When turning is about to be performed, it is considered that the turning is possible well stabilized for there does not generate the horizontal acceleration attributable to draft-away of the body.
4. As for a speed changes of right wrist joint and elbow joint, the speed of right wrist joint has obtained 2.69 2.16 m/s at AMX, the speed of elbow has obtained 2.63 0.72 m/s.
5. As for a change of angle at each phase after AMX, the left knee angle of subject KBY and KMJ became narrow to 76.4∼94.0 . Subject JET and KEA keep the good performance to 102.9∼141.8 . The hip joint of angle keep the good performance to JEJ 99.3∼107.3 , KBY 99.5∼105.3 , KEA 98.3∼100.7 , KMJ 95.0∼102.2 .
To summarize above, to efficiently performed at the double pivot attitude motion in the rhythmic sport gymnastic. a moving range of center gravity has small to maintain higher stability. After AMX phase, she had maintain knee angle 100.7∼97.1 , hip joint angle 98.0∼103.1 , but total necessary time at each phase had performed 1.93 0.06 sec. slowly than mean.