By using the methods of experiment and documentary, the data and motor photo of Liu Xiang attending Olympic and pre-Olympic games were collected and digitized. Based on the sport training practice, Liu-Xiang 110m hurdle sport techniques were investigated. Results show that the performance showing the technique characteristics of short flight time, long offending hurdle distance, short landing distance, high sprint pace frequency and the hip-hurdling style which postponed hold-down-hurdle time, enhanced hold-down-hurdle speed and decreased landing time. His knee conceding angle was small and pelvis swung rapidly.
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