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The purpose of this study was to evaluate the kinematic characteristics of and hurdle clearances during the final of the 110-m hurdles at the IAAF World Championships, Daegu 2011. To this end, the hurdling motions of the top 4 ranked male hurdlers in the competition were analyzed. A total of 12 cameras were used to record their motions, with a sampling frequency of 120 Hz. The cameras were calibrated using control objects that covered all of the lanes (1st~8th lanes). After analyzing all the data, we arrived at the following results. In the take-off phase, all athletes revealed similar take-off times (CT), and similar distances from the take-off to hurdleto (L1) and hurdle to landing (L2). In particular, Turner, ranked , had an inconsistent L2 and may need further training to correct it. In the flight phase, Richardson, ranked , showed the longest flight distance, whereas Xiang, who was ranked , showed the highest CG height from the hurdle. For the step patterns, to increase the pitch frequency, Richardson and Xiang used shorter 3-step lengths than Turner and Oliver.

Kinematic Analysis of Hurdle Clearance Technique for 110-m Men's Hurdlers at IAAF World Championships, Daegue 2011