Biomechanics Quick Response System Research of Vault Technical Training

Abstract

We protocol to research and develop sport biomechanics quick response system for vault technical training, which quick analyzes vault techniques of athletes by using pressure plate on vault board to collect data of step position and strength, combined with synchronous acquisition of coxa joint kinematic parameters. This is helpful to improve the technical training effective of vault gymnast. We use a regular camera to shoot the positive side of athletes. At the same time the pressure plate is placed on vault board to collect dynamic data. Use MATLAB as a development platform, and input the video image of the athletes. The software automatically recognizes tracking coxa joint colored blocks, records the coordinates, and calculates position shift, velocity and other statistics of coxa joint accordingly. Pressure plate with built-in software BioWare can export pressure data and save it as a .txt format. Through programming, MATLAB can read kinetic data of pressure plate in .txt format, and synchronically analyze vault gymnasts movement with tracking kinematics data of coxa joint trajectory. Researching and developing this system is generated from practically overcoming the difficulty in vault training. The features of this system are to collect and analyze data with simplicity and quickness. This system is mainly comprised by normal camera equipment and pressure plate, which can provide a technical diagnose report with kinematics and kinetics parameters in one time vault exercise. For coaches and gymnasts, this report can be used as reference to provide improvement comments in vault daily training, as well as enhance effectiveness and efficiency of vault technical training.