BIOMECHANICAL ANALYSIS DURING COUNTERMOVEMENT JUMP IN CHILDREN AND ADULTS

Li-I Wang, Der-Chia Lin, Chenfu Huang, and Chung-Hsien Yang.

Dept. of P. E., National Taiwan Normal University, Taipei City, TAIWAN

This study was to examine the biomechanical characteristics of children and adults during countermovement jump. Seven children and seven adult males were recruited to the study. A Peak high-speed camera (120Hz) synchronized with a force plate (600Hz) were used to record vertical jumping action. The kinetic parameters were calculated by using inverse dynamic method. Results showed that the children group had both immature joint function prior to propulsion and inadequate knee and ankle joints function during propulsion. It is concluded that a lack of formal in jumping strategy during vertical jumping for the children group when the kinetics methods was performed. This information may be employed in following studies about countermovement jump, avoiding to ignore some important information needed only by kinematic analysis, it will be more complete to apply kinetic analysis for children movement researches.