Kinematics of the racket tip | Drive volley (Mean ± SD) |
Groundstroke (Mean ± SD) |
p-value | Effect size | |
---|---|---|---|---|---|
Velocity at impact (m/s) |
Horizontal velocity | 21.79 ± 1.90 | 24.63 ± 2.44 | .00 |
1.30 |
Vertical velocity | 13.05 ± 1.52 | 10.91 ± 1.55 | .00 |
1.39 | |
Resultant velocity | 25.46 ± 1.87 | 26.99 ± 2.42 | .01 |
0.71 | |
Swing duration of each phase (s) |
Preparation | 0.11 ± 0.03 | 0.15 ± 0.04 | .01 |
1.07 |
Early Acceleration | 0.03 ± 0.01 | 0.02 ± 0.01 | .17 | 0.33 | |
Late Acceleration | 0.01 ± 0.00 | 0.01 ± 0.00 | .17 | 0.32 | |
Early Follow-through | 0.01 ± 0.00 | 0.01 ± 0.00 | .04 |
1.00 | |
Late Follow-through | 0.04 ± 0.01 | 0.03 ± 0.01 | .04 |
0.72 | |
Average Velocity (m/s) |
Preparation | 1.98 ± 0.70 | 1.95 ± 0.59 | .82 | 0.05 |
Early Acceleration | 6.01 ± 2.09 | 6.59 ± 2.04 | .16 | 0.28 | |
Late Acceleration | 15.97 ± 2.91 | 17.39 ± 2.33 | .03 |
0.54 | |
Early Follow-through | 15.19 ± 1.89 | 16.71 ± 2.02 | .01 |
0.78 | |
Late Follow-through | 6.61 ± 1.34 | 7.91 ± 1.99 | .03 |
0.77 |