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The long jump motion of 8 finalist of men`s long jump of IAAF World Championships Daegu 2011 were analysed and the kinematic characteristics of the technique were investigated. The kinematic characteristics of long jump motion of 8 finalist were as follows. In the run-up phase, the average length of 3, 2, and 1 stride were m, m, and m, respectively. The change in the height of the center of gravity was m. The average velocity of 3, 2, and 1 stride was m/s, m/s, and m/s, respectively. In the take-off phase, the horizontal velocity, the vertical velocity, the reduction of horizontal velocity was m/s, m/s, and m/s, respectively. The minimum knee angle and the take off angle was and , respectively. In the flight phase, the flight time and the maximum height of the center of gravity was s, and m, respectively. In the landing phase, the landing length was m. The body angle, the knee angle, and the hip angle was , , and , respectively. The kinematic characteristics of long jump motion with good record were shown as follows. The reduction of the horizontal velocity in the take-off phase was minimized while the velocity of the run-up were maximally maintained. The vertical velocity in the take-off phase was increased with rapidly extended knee and the high center of gravity.

Kinematic Analysis of the Men's Long Jump in the IAAF World Championships Daegu 2011