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Testing Item I ― Centre Shot ( 墊步射球 ). Player A. Player B. How to analyse movement. Player A & B Centre Shot Displacement-time Graph. Player B. Player A. Player A & B Centre Shot Velocity-time Graph. Player B. Player A. Findings (I).
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Testing Item I ― Centre Shot (墊步射球) Player A Player B
Player A & B Centre Shot Displacement-time Graph Player B Player A
Player A & B Centre Shot Velocity-time Graph Player B Player A
Findings (I) • Compared with the centre shot, the ball velocity of player B is faster than that of player A. Why? • The arm flailing action of player B is better than that of player A. • Room for improvement in arm flailing action of player A.
Testing Item II ― Player A with different shots Centre Shot Penalty Shot
Player A different shots Displacement-time Graph Penalty Shot Centre Shot
Player A different shots Velocity-time Graph Centre Shot Penalty Shot
Findings (II) • Compared with the penalty shot, the ball velocity of centre shot is more or less the same as that of penalty shot. Why? • The initial body movement of player A is ineffective to increase the initial ball velocity. • Player A has to improve his initial body movement.