| （1.Postdoctoral Station，South China Normal University，Guangzhou 510006，China；2.Xi’an University of Physical Education，Xi’an 710068，China) Abstract: By using such methods as sports biomechanical test and analysis, the author analyzed the performance and technical changes of WANG Zheng as an excellent Chinese female hammer thrower over the years, and revealed the fol-lowing findings: with her performance improved, technically, at each turn, the time used and the instrument track produced by WANG Zheng at the double support stage showed a gradual increase, and the proportion increased gradually, while the time used and instrument track produced at the single support stage showed a gradually shortening trend, her technique tended to be rational; at the moment she released the instrument, the angle decreased gradually, the instrument’s horizontal velocity increased gradually, its vertical velocity decreased gradually, her final power explosion parameter mode was more rational; at the current stage, she had the following main problems: at turns 3 and 4, her knee joint stretching amplitude was too great, and her shoulder muscles stretching amplitude was insufficient, which need to be improved, moreover, the in-strument’s bevel angle was on the big side, and the instrument’s peak position was on the high side.
Key words: competition and training；hammer throwing technique；female hammer thrower；WANG Zheng |
