INVESTIGATING OF FORCES, TORQUES AND WORK THROUGH BIOMECHANICAL INDIRECT MEASUREMENTS OF BACKWARD SOMERSAULT

Abstract

The purpose of the study was to investigate the forces and the torque to the joints in different steps in backward somersault using direct measurement method and simple biomechanical relationships proposed by Shahbazi et al. (1998). The experiment were carried out with 15 experienced children aged 11±2 SD years. Each subject performed three backward somersaults with round off. The experiments were filmed and recorded by a 25 Hz, video camera. Therefore two dimensional kinematics analysis yielded the valuable mechanical parameters which confirmed the results achieved by sophisticated force platform and three dimensional analysis systems.