Table 1. Detailed scores of movement initiation; backswing duration; forward swing duration; and ball speed.
Initiation move Backswing Forward swing Ball speed
Server (s) Ball machine (s) Server (s) Ball machine (s) Server (s) Ball machine (s) Server (kph) Ball machine (kph)
Mean .42 .37 .51 .56 .16 .17 112.5 113.8
SD .04 .02 .05 .04 .02 .02 11.6 11.4
Min. .34 .34 .48 .50 .14 .14 91.0 96.4
Max. .48 .42 .62 .60 .20 .20 134.5 130.3
Range .14 .08 .14 .10 .06 .06 43.5 33.9