Table 1.
Results of the independent-sample t-test before the experiment.
| Experimental group | Control group | t | Sig 2-tailed | |||
|---|---|---|---|---|---|---|
| Mean | Std | Mean | Std | |||
| Forehand serve | 38.78 | 3.24 | 39.23 | 3.41 | 0.78 | >0.05 |
| Backhand serve | 41.67 | 3.16 | 40.24 | 3.12 | 0.75 | >0.05 |
| Long-range serve | 42.87 | 3.62 | 41.52 | 2.98 | 0.21 | >0.05 |
| Flat ball | 38.35 | 2.87 | 38.65 | 2.93 | 0.37 | >0.05 |
| Drop ball | 36.61 | 4.27 | 37.43 | 3.42 | 0.52 | >0.05 |
| Kill ball | 32.74 | 4.75 | 31.35 | 4.25 | 0.41 | >0.05 |
| Hook ball | 38.42 | 3.26 | 39.41 | 3.95 | 0.31 | >0.05 |
| Rub ball | 40.15 | 4.37 | 42.14 | 5.21 | 0.53 | >0.05 |
| Put small ball | 38.46 | 5.27 | 37.61 | 4.17 | 0.47 | >0.05 |
| Pick ball | 39.23 | 4.92 | 39.04 | 4.16 | 0.31 | >0.05 |