An Analysis On The Hurdling Techniques Of The World-class Chinese Male 110m Hurdler

Introduction
Hurdle athlete Liu Xiang who is 20 years old is hope of Chinese track and field events. He got the copper medal of
2003 World Champion in Paris. For the sake of preparing the 2004 and 2008 Olympic games and overtaking the
advanced level in the world, it is necessary to analyze and compare Liu Xiang’s technique in order to find weakness of
it and to train with pertinency and to improve the level of Chinese hurdle.

Research objects and methods
The research objects are Allen Johnson、Terrence Trammell、LIU Xiang, the top 3 hurdle athletes of 2003 Paris World
Championship. The video which is 50f/s of male 110m hurdle was analyzed and accounted.

Research results
The score of the 110m hurdle consists of dividing hurdle time on the whole. The average dividing hurdles time of Liu
Xiang from 2nd hurdle to 10th hurdle is 1.03s. The average dividing hurdle time from 2nd hurdle to 10th hurdle of the top 2
hurdle athletes of WTC are 1.018s and 1.024s.
The average dividing hurdles velocity of Liu Xiang from 2nd hurdle to 10th hurdle is 8.88m/s. The average dividing
hurdles velocity from 2nd hurdle to 10th hurdle of the top 2 hurdle athletes are 8.98m/s and 8.93m/s. The maximum
dividing hurdles velocity of Liu Xiang is 9.14m/s which is the same as that of the top 2 hurdles athletes of WTC. Liu
Xiang had just one velocity of 9.14m/s, but Johnson had 4 and Terrence Trammell had 3.
The time of unsustained phase is the important index of the striding hurdle technique of athlete. We compared the
average time of unsustained phase from 1st to 10th hurdle of Chinese athlete Liu Xiang and that of world excellent
athletes. The average time of unsustained phase of world excellent athletes is 0.33s, the shortest is 0.32s. The average
time of unsustained phase of Liu Xiang is 0.35s, the shortest is 0.34s. The longer time of unsustained phase shows the
problem of striding technique which is the weakness of Liu Xiang.

Conclusion
Comparing Chinese male 110m hurdle athlete Liu Xiang with Johnson and Terrence Trammell. The average dividing
hurdles time is longer and velocity is lower. The maximum velocity between hurdles is the same but time is less.
The time of unsustained phase of Liu Xiang is longer. This shows the problem of striding technique which is the
problem of technique and weakness of Liu Xiang. And it’s also the key to overtake world advanced level. Liu Xiang’s
time of three strides between the hurdles is a little better than Johnson and Terrence Trammell. That shows Liu Xiang’
frequency of strides is his advantage.
Liu Xiang’s sprinting ability is a little better than Johnson and Terrence Trammell.

References
[1]. Dapena, J. (1991). Hurdle clearance Technique. Track and Field. Quart. Rev.116:3,710-712
[2]. Milan Coh, (2003) Colin Jackson’s Hurdle clearance Technique. Track Coach3,5161-5167

NOTA: O texto com a iconografia está no anexo.

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