| Summary: | 碩士 === 國立臺北教育大學 === 體育學系碩士班 === 96 === Purpose:The purpose of this study was to investigate the changes in kinematical and dynamic parameters during two different kinds of handball overarm throwing. Subject:The object of study is Tan Chong Sheng(age: 30, height:192.5cm, weight: 102.1kg). Method: In this study, two CPL MS25K high-speed cameras (200 Hz) and two ATMI force plate were used to record simultaneously kinematical and dynamic parameters of two different kinds of handball shooting. By adopting Kwon 3D movement analysis software to process the film with Three Dimension Direct Linear Transformation (3D-DLT), kinematical parameters such as body center-of-gravity position, speed, displacement, maximal angles,angles at ball release, and maximal angular velocities of the joint movements and their timing during the throw could be obtained. With the help of amplifier, signals obtained by force plate reached 16-frequency multi-functional receive box and A/D analog-digital signal transfer.By adopting DASY LAB6.0 software to process original signals with correction modular and low-pass filtering (10 HZ), three dimension ground reaction force could be obtained. Then, using body weight (BW) as standardization basis, force and impulse values of ground reaction force of the right and left foot could be worked out.Result: (1)The kind of overarm throwing with sloping body shows greater knee joint angle, angular velocities, and ground reaction force of the left foot .(2) The kind of overarm throwing with not sloping body shows greater hip joint angle, hip angular velocities,trunk joint angle,and trunk angular velocities.(3) The shoulder and elbow angular velocities of the kind of overarm throwing with not sloping body is faster than the kind of overarm throwing with sloping body.(4) The wrist joint angular velocities of the kind of overarm throwing with sloping body is faster than the kind of overarm throwing with not sloping body. Conclusions: Handball Players use the kind of overarm throwing with sloping body could have better performance if they can control body center-of-gravity steadily, and enhance wrist joint angular velocities.
Key words: wrist joint angular velocities; trunk angular velocities; open kinetic chain
|
|---|
