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The purpose of this study was to investigate the kinetic factors of Stefan holm`s take-off motion and provide the technical data. Collected data of the subject(height: 181 cm, weight: 71 kg, record: 230 cm) were used for the last two strides and take-off phase. The results were as follows: The vertical impulse force was 2044.8 N which was 2.49 times and the anterior-posterior impulse force was -1306.4 N which was 1.88 times of the subject`s weight. The take-off leg angular velocities() were switched drastically from clockwise to count clockwise direction between two-step touchdown and take-off. The highest jerk of the take-off foot was 368.97 m/s3 during the two step take-off and the take-off foot made an impact to the ground with 1225.07 m/s3 during the one step touchdown.

Analysis of Impulse Force and Kinematic Factors of the Limbs during Stefan Holm's Take-off Phase and Penultimate Stride of High Jump