Table 4. Pre- and posttest comparisons of the stroke effect of topspin and backspin for EG.
| Variables |
Topspin |
Backspin |
| Pretest |
Posttest |
∆% |
p-value |
Pretest |
Posttest |
∆% |
p-value |
| Large area |
13.30±4.50 |
19.00±2.06 |
42.86% |
0.008** |
10.90±3.46 |
18.90±2.13 |
73.39% |
0.007** |
| Small area |
0.60±0.97 |
4.20±0.79 |
600.00% |
0.005** |
0.40±0.69 |
4.10±1.37 |
925% |
0.005** |
| Out |
15.50±3.86 |
11.10±2.72 |
-28.39% |
0.033* |
15.40±3.42 |
10.60±4.17 |
-31.17% |
0.011* |
| Net |
1.90±1.08 |
2.10±0.96 |
10.53% |
0.798 |
2.30±1.45 |
2.00±1.03 |
-13.04% |
1.000 |
| Miss |
0.60±0.70 |
0.40±0.69 |
-33.33% |
0.527 |
1.40±1.26 |
0.30±0.18 |
-78.57% |
0.040* |
| Racket-edge stroke |
0.70±0.48 |
0.40±1.26 |
-42.86% |
0.206 |
1.40±1.64 |
0.10±0.12 |
-92.86% |
0.043* |
| Ball speed |
26.27±3.12 |
27.33±2.54 |
4.04% |
0.005** |
24.50±1.52 |
26.40±1.18 |
7.76% |
0.005** |
EG = Experimental group* p< 0.05** p< 0.01.
