EFFECT OF FATIGUE ON MUSCLE COORDINATION IN REPEATED ALL-OUT BOUTS

  • Frantrois Billaut
  • Fabien A. Basset
  • Magali Giacomoni
  • Guy Falgairette
Keywords: sprint, high-intensity, EMG, time delay, cycling

Abstract

The aim of the present study was to analyse the fatigue occurring during repeated all-out short cycling bouts through mechanical and electromyographic (EMG) data and to focus on . inter-muscle coordination. The results showed a significant decrease in peak power output without significant modifications in the EMG activity through sprint repetitions. However, the coordination timing between agonist and antagonist muscles was reduced. In conclusion, power output decreased during high-intensity repeated sprints due to the inability of quadriceps to maintain maximal force and owing to inter-muscle coordination limitations.
Published
2008-03-25