Implement sports

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The purpose of this study was to kinematically analyse the luge start motion for world-class single luge athlete at an official competition. Thirteen male luge athletes were videotaped and analysed with the three-dimensional DLT method at the World Luge Championship. Athletes were assigned to two groups (fast or slow) based on their early start time. At the start bar release, the fast group showed significantly larger system CG velocity (4.3 ± 0.1 m/s, p < 0.05) than the slow group. The backward system CG velocity of the fast group tended to be larger (-2.8 ± 0.2 m/s vs. -2.6 ± 0.3 m/s, ES = 0.80), and the athletes of the fast group rotated the arms move medially and extended the elbow joint more than the slow group.