THE STUDY OF THE OPTIMAL EXCHANGE TECHNIQUE IN 4X100M RELAY

  • Bai-Ming Zhang
  • Danny Chu
Keywords: 4x100m relay, kinematic, go mark

Abstract

The objective of this study was to determine the baton passing distance i.e. the distance between the ‘go’ mark and start line of acceleration zone for three baton passes. The motion was video filmed (50Hz) during a local athletic meet. Selected video materials were processed using a kinematic system to calculate the centre of gravity (C.G.) of the runners. A plot of C.G. velocity against different distance ranges of 0m to 40m and 70m to 100m for each runner was made. Based on the plots, the ‘go’ mark for three exchange sessions could be established. The results of the study established that the distance from the start line of the outgoing runner to the ‘go’ mark selected by the runners was usually much shorter than the optimal distance.
Section
Equipment / Instrumentation