EFFECTS OF THREE PREPARATORY MOVEMENTS ON SIDEWARD PROPULSIVE MOVEMENT

  • Yong-Woon Kim
  • Chul-Soo Chung
  • In-Sik Shin
  • Te-Jin Yoon
  • Young-Suk Lee
Keywords: propulsion, countermovement. hopping, pre-stretch, Stretch-shortening cycle (SSC)

Abstract

This study investigated the effects of three preparatory movements (squat, countermovement and hopping) on the sideward propulsive movement. Seven subjects were analyzed in 3-D to determine how fast they reacted to external signals, using three techniques, to reacl1 an aIming spot. The hopping and the countermovement types were considered better than the squat type in the propulsion. The hopping particularly showed the shortest duration from the external signal to take-off and also recorded high extension moments due to the pre-stretch mechanism for the push-off phase.
Published
2008-03-02
Section
Coaching and Sports Activities