Biodynamic characteristics of vertical and drop jumps

Milan Čoh; Mitja Bračič; S. Peharec; P. Bačić; Milovan Bratić; Marko Aleksandrović

doi:10.12697/akut.2011.17.02

Milan Čoh Faculty of Sport, University of Ljubljana, Ljubljana, Slovenia
Mitja Bračič Faculty of Sport, University of Ljubljana, Ljubljana, Slovenia
S. Peharec Peharec Polyclinic for Physical Medicine and Rehabilitation, Pula, Croatia
P. Bačić Peharec Polyclinic for Physical Medicine and Rehabilitation, Pula, Croatia
Milovan Bratić Faculty of Sport and Physical Education, University of Niš, Serbia
Marko Aleksandrović Faculty of Sport and Physical Education, University of Niš, Serbia

DOI: https://doi.org/10.12697/akut.2011.17.02

Keywords: diagnostics, kinematics, dynamics, vertical jump, drop jump

Abstract

The aim of the study was to establish the main kinematic and dynamic parameters that generate the efficiency of vertical and drop jumps. The take-off power was assessed using the following tests: countermovement jump, counter-movement jump with arm swing, jump, drop jump and continuous jump. Kinematic and dynamic parameters of vertical and drop jumps were established using two separate forceplates Kistler Type 9286A and a synchronised 3-D kinematic system CCD SMART-600E. The athlete model was defined with 17 markers sensitive to infra-red light. It was established that the main generators of efficiency in vertical and drop jumps included: take-off velocity, eccentric-concentric time, eccentric impulse, ground contact time and ankle flexion.