Angular Velocity

Angular velocity is ‘the rate of change in angle of the thrower’ (Blazevich, p.16).

de Subijana, et.al. states that the sequence of body movements during a serve were ‘first the elbow extension, second the internal rotation of the upper arm with the lower arm pronation, and finally the wrist action occurred. The angular velocity of the upper arm internal rotation reached 2418.5%s in males and 1348.7%s in females’ (de Subijana, et.al., p.4). ‘It is immediately apparent that if we play a sport where we swing a bat or racket that we will obtain a higher velocity if we swing with our arm outstretched, as long as reaching out doesn’t slow our movement down.’ (Blazevich, p.22). This can influence a tennis serve. Obviously as Blazevich stated an outstretched arm will obtain a higher velocity.