| （1.Department of Physical Education，Xianyang Normal University，Xianyang 712000，China；2.Ruiquan Junior High School，Weinan 714000，China） Abstract: By basing their study subjects on excellent Chinese female shot putters LI Mei-ju, LI Ling, LIU Xiang-rong and GONG Li-jiao, by means of literature data, 3D photography and video analysis, coupled with the principle of tech-nical diagnosis of sport, the author performed a comprehensive analysis on the technical characteristics, mutual assis-tance conditions and momentum transfer characteristics of their left and right lower limb movement from the perspec-tive of kinematics . Main conclusions: 1) when the right leg lifted off, the timing for kicking and swinging by LI Mei-ju and LIU Xiang-rong was not ideal, and the amplitude of their buttock moving backward was insufficient; 2) when the right leg lifted off, the left leg movement chain of these four players was damaged to different extents, not in confor-mity with the principle of the human movement chain; 3) when the right leg lifted off, the effect of right leg momentum transfer of other players except LI Mei-ju was good, in conformity with the principle of the human movement chain; 4) when the right leg stood, the right hip speed of GONG Li-jiao was significantly on the low side; 5) at the end of the gliding stage, these four players, especially LI Ling, had a too high center of gravity.
Key words: kinesiology；women’s shot put；gliding stage；lower limb moving technique；kinematical analysis |
