THE TEMPORAL SEQUENCE OF JOINT KINEMATICS IN A SIDEARM THROW OF A FLYING DISC FOR DISTANCE

Abstract

The aim of the present study was to quantify the temporal sequence of joint kinematics in a sidearm throw of a flying disc by skilled throwers. Seven skilled throwers used a sidearm motion to throw a flying disc as far as possible. Three-dimensional kinematics of the trunk, throwing-arm and disc were recorded using a motion capture system, and maximum linear and angular velocity of each joint and the disc were computed. The maximal linear velocity of the elbow occurred before than the maximal linear velocity of the shoulder. This sequence could be due to the timing of maximal shoulder adduction velocity, which occurred earlier than the maximal angular velocities of trunk. In conclusion, coaches and players should consider this temporal order when they technically coach the sidearm motion for disc throws.