女子F42级跳远运动员张海原起跳阶段运动学特点分析.pdf

27 5 沈 阳体 育 学 院学 报 Vol27 No5 2008 10 Journal of Shenyang Sport University Oct.2008 F42 1 2 1 闫红光, 孙宝全,吴松林 ( 1 , 110102; 2 , 110102) :, F42 2007 ,,F42 ;, ,, , ,,, , :F42 ;; :G8233 :A :1004- 0560(2008) 05- 0081- 03 Kinematics Characteristic Analysis on Takingoff Stage of a Female Grade F42 Long Jump Athlete Zhang Haiyuan 1 2 1 YAN Hongguang , SUN Baoquan , U Songlin (1Dept.of Human Sports Science,Shenyang Sport University,Shenyang 110102, Liaoning,China; 2P.E.Department,Shenyang Sport University, Shenyang 110102,Liaoning,China) Abstract This paper used motion image analytical method,which recorded a female grade F42 long jump athlete Zhang Haiyuan on nonprostheticwinning the gold medal inthe 2007 Nanjing selectionsmatch.Theanalyticresultswerecompared to wearing aprosthetic.Theresultsindicatedthat there were differences between grade F42 long jump normal athlete and nonnormal ones onthe parametersof kinematics.The vertical speed fluctuationsof Zhang Haiyuan gravity center on non prostheticarelargerthan herson prosthetic.However,thelarger extent of gravity changedestroysthecontinuityof motion. It isbad to improveathleticperformance,so the authors suggest thatZhang Haiyuan shouldbeonprostheticas soon aspos sible.If she is still on nonprosthetic,she should increase the exercises of spring ability and strength of lower limb spring andlimb swing in order to improve the speed of approach and board. Sheshould speedup swing amplitude and speed of both arms in order to increasetakeoff velocity and keep takeoff velocity, achievedthe aim of improving the performanceof sports. Key words Gr