AN ELECTRONIC TELEMETRY SYSTEM USING A LAPTOP FOR INVESTIGATION OF KINEMATIC AND KINETIC STUDIES OF SPRINTERS

Abstract

The purpose of this study was to design an electronic telemetry system in order to investigate kinematics and kinetic characteristics of sprinters. Ten FM transmitters with the frequency range of 98-108 MHz have been designed and constructed for time interval capturing in conjunction with an adequate interface including a FM receiver and pulse shaping, and a laptop computer. With the help of C program, we could profit the internal clock of the computer. A video camera at 30 Hz was also used to capture data for investigation of reaction, stopping and take-off mean forces of each leg. The kinematics curves showed that how the sprinters ran a 100m run, when they reached their maximum speed, how long they could maintain this speed, and when the acceleration begins to be negative, while the kinetic results showed that in maximum speed, the longer the stride length is, the larger are the forces.