Kinematics Of Male Elite Hammer Throwing Technology

Of the long cast Open in2012, the top three men’s hammerthrower (Wang Shi Zhu，Guo Kun, Sun Xiao) race to shoot. Using the3-DSignalTecvideo analysis software system for analytical analysis, these three players accordingto the principle of Hammer technology, sports biomechanics theory throwingtechnique to do a complete diagnosis and analysis to get their pre-swing, rotation andfinally forcibly kinematics parameters. With the world elite men’s hammer throwerkinematic parameters were compared to identify a lack of technical aspects, draw themain problems and gaps exist in our men’s hammer throw motion technology, so asto provide a theoretical basis for the teaching and training of the hammer throw, todemand as soon as possible to improve athletic performance, narrowing the gap toreach world-class levels as soon as possible so that our men’s hammer throw.Methods: literature data,3-D camera analytical method, comparative method.Results:(1) three athletes pre-placed time varies, but compared with the theoutstanding foreign athletes XieDiHe pre-swing time of1.06s, long time. Hammerball incremental (2) pre-swing phase incremental biggest stage of all stages of thethrowing technique, a big gap between the three athletes at this stage with foreignathletes, the largest increment king Guests building14.92m/s is far behind theXieDiHe create world record pre-swing speed of17.60m/s.③3athletes rotatingTotal long time. WANG Shi-built four-circle rotation time gradually reduce thedecline rate is obvious that he has strong acceleration capability in a rotating, whilethe other two athletes of the time lapse rate is relatively low, even negativeincremental accelerated obvious.④3athletes in addition to every dawn outsideevery lap and total rotation of single, double support d/s ratio is less than1.⑤therotating stage our athletes with the increase in the number of rotations, the ability toaccelerate more and more weak, greatly limit the final shot speed.⑥in the changein the average single support start and end time of three athletes left knee angle29.67°,42.80°and foreign elite athletes Litvin Ivanov, a difference of13.13°single support each circle start and end The moment left knee angle changedifference compared Litvin Ivanov but also small about10°.⑦in the bevelangle change on the first lap and the second lap, the the our athletes variationssmaller, respectively, to4.40°,3.50°,6.10°, and foreign elite athletes Litvin Ivanov reached13°.⑧3Ming athletes last exertion stage used are0.32s and0.34s,0.38s, are longer than XieDiHe’s0.27s;⑨three athletes in the final shotspeed ranked first of WANG Shi-built speed to23.77m/s, followed by Guo Kun of20.84m/s, and every dawn20.74m/s, and foreign excellent athletes XieDiHe lastshot compared to the speed of30.70m/s [13], the largest gap reached9.96m/s.