CHANGE IN KINETICS OF THROWING ARM JOINTS IN ELEMENTARY SCHOOL CHILDREN DUE TO TRAINING OF A DISTANCE THROW

  • Yasuto Kobayashi
  • Michiyoshi Ae
  • Akiyo Miyazaki
  • Norihisa Fujii
  • Akira Iiboshi
  • Hideaki Nakatani
Keywords: delayed display, joint torque, mechanical work, standard motion

Abstract

The purpose of this study was to investigate effects of training with a standard motion model on the kinetics of throwing arm joints in elementary school children. Thirty-two children from sixth grade were participated in three sessions: pre- and post-training videotaping and technique training. Their throwing motions were videotaped with two high-speed cameras and analysed three-dimensionally. Through the training with the use of standard motion model as a reference, throwing distance and ball velocity significantly improved. Joint force, joint torque and mechanical work in throwing arm joints increased at the post-training. The results indicated that the use of standard motion model was useful for the improvement in throwing distance and joint kinetics of throwing arm.
Published
2016-05-05
Section
Coaching and Sports Activities