Milan Coh¹, Matej Supej¹, Milan Zvan¹, Stojan Burnik¹

¹Faculty of Sport, University of Ljubljana, Slovenia

BIODYNAMICAL PROFIL OF THE TAKE-OFF ACTION IN HIGH JUMP

Sport Mont 2010, VIII(23-24), 12-19

Abstract

The aim of this study was to identify the key dynamic and kinematic parameters of the take-off action in the high jump. The authors studied a single elite athlete (personal record 2.31m) using a direct measurement method, i.e. a force plate, to measure the dynamic parameters and a synchronised 3D video system to measure the kinematic parameters. They were able to collect and calculate data on 49 variables. Given that the study was focused on just one athlete, generalisation of the results can only be limited. However, this was a very specific experiment where the results clearly have theoretical and practical value for biomechanical research of high jump technique modelling. Their findings include that the jumper studied developed the highest ground reaction force in the eccentric phase of the take-off. The ground reaction force in the vertical direction exceeded his body weight by 5.6 times. In the concentric phase, the maximum ground reaction force was 9% lower than in the eccentric phase. They were also able to identify large ground reaction forces in the horizontal and lateral directions, which are manifested in extreme loading on the ankle joint of the jumper’s take-off leg during the take-off action.

Keywords

hight jump, technique, kinematic, dynamic, take-off action

View full article
(PDF – 150KB)