THE HORIZONTAL VELOCITY ANALYSIS IN THE MOMENT OF TAKE-OFF FOR LONG JUMP TRIAL

Abstract

In the present paper it is presented a method used to find out one of the influence parameter that determinate the jump distance during the long jump trial. The performances obtained the athletes depends on some parameters as: the length of the run-up, the take off force and time, the mass center angle vs. horizontal direction, the mass centre balancing position during the flight through the air, and the correct landing position. The used data were obtained using a video record based on image processing. Using special markers attached on athletes it was obtained the trajectory of the jumpers and some important parameters as horizontal and vertical velocities in the moment of the take-off. The founded parameter was the horizontal velocity of the global mass centre of the athlete in the moment of take-off.