RELATIVE JOINT MOMENT CONTRIBUTION TO THE POWER GENERATED IN A MARTIAL ARTS KICK – INFLUENCE OF SKILL LEVEL

  • Sílvia Cabral
  • António P. Veloso
  • Vera Moniz-Pereira
Keywords: induced power analysis, roundhouse kick, karate, biomechanics

Abstract

The purpose of this study was to analyse whether athletes of different skill level present different relative joint moment contributions to the power generated in a martial arts kick. This investigation was carried out using the induced power analysis, a method based on the dynamic coupling inherent to ultiarticulated systems. The comparison was done among three male karatekas, considered to be experienced, intermediate and novice. The results show that the hip extension moment was the major contributor in the production of mechanical energy in the kicking foot at impact. Similarly the hip internal rotation and ankle dorsiflexion moments worked to build up the foot’s energy for most of movement. The experienced athlete seems to benefit more from these by potentiating the moments produced in these joints.