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