Analysis Of The Kinematic Characteristics Of China's Three Elite Female Hammer Thrower

The women hammer event was founded in the year of 1994 by IAAF,and set the women hammer word record.it was ranked as the word championship event in 1999 and as Sydney official event in 2000.until 1998,it has been the official competition event in the China.with the development of the event,until 2006,the women hammer word record has been broken by Russian athletes by three times,the result is up to 77.80m.today seven athletes' results is more than 75m,the Russian athletes dominate the women hammer event.Their technical style delegates the technical chrematistic of women hammer event including high-speed rotation and well rotation rhythm;fine over equipment small body screw degree;late lift early drop;high-speed preliminary swing up rotation technique,which is deserved by learned and researched by us. Since 1994,Chinese women hammer event was increasingly developing,compared with Russia,the Chinese women hammer event shows slow developing speed,both two countries' gap has been increasing large,and the total level of the Chinese women hammer event is dropping,in the early half year of 2006,the athlete named by zhang wen xiu achieves the results for 71.58m in the zheng zhou,whose result ranks out of the 50^th place,which result is never seen in the China.In order to increase the sport level of the women hammer event and win the well rank in the 2008Beijing Olympic games,the discussion on the sport training and sport technique is a very important task.In the meanwhile,The study on the material of the complete technique action on the women hammer is relatively lack.Thus,this paper makes some analysis on the time parameter,speed parameter,track parameter and angle parameter for the three elite women hammer throwers in the china by three dimension video and show kinematic characteristic on the elite women hammer throwers.we can conclude that the total techniques of the three hammer throwers are consistent with the modern throwing technique characteristic;during the hammer throwing,they have formed their individual technical style;total rotation speed and single &double support are up to world level;rotation rhythm is not rationalization including the accelerate speed of the first and second circle is very fast and the third forth circle is not obvious,resulting in the poor speed increment;the ratio both the vertical speed and horizontal speed is not right.The accelerating "Toward back" is poor during the double support phrase of the rotation process,resulting in the poor throwing results;the delivery phrase of the throwing technique exists in obvious deficiency including short time,small range,small speed increment.thus,in the future hammer training,we should solve the deficiency of the hammer throwing technique,in order to improve the result for the Chinese women hammer throwers.