Kinematics of football's overhead throwing

Title Kinematics offootball's overhead throwing Aim of research The main aim of the research was to find out of the differences between two ways of soccer throw in from point of the movement performance. We eYaluated speed of the ball during the phase ofrelease, distance ofthe throw and the trajectory of flying the ball which has stated like the criterion of performance. Movement pattem was observed by means of the spatio-temporal interaction. Methods Observed group was formed by n = 13 soccer skilled soccer players. They executed oYerhead soccer throw-in by two ways: 1) static throw-in, 2) throw-in after run up. All throws was executed in line with rules of the soccer throw-in. The speed of the ball was stated by means of radar gun STALKER. The horizontal distance and trajectory of flying phase of the ball was diagnostified by 2D kinematics analysis and evaluation of the throwing technique was realized by 3D spatial video analysis. Results The comparison of the two ways of soccer throw-in shows that higher speed of the ball during the phase of releasing and longer distance of throw was in favour of the way after run up thro\\ing. We found out the some differences between intraindiYidual attempts of the throws. It seems, that the key phase ofthis movement is backswing phase over the head and forward swing..