Groups | Before intervention | After intervention | Δ |
K1 | 17.37 ± 2.83 | 12.05 ± 2.69 | −5.33 ± 3.55 |
K2 | 14.90 ± 2.95 | 17.44 ± 3.34 | 2.54 ± 4.01 |
K3 | 15.06 ± 2.76 | 11.34 ± 2.91 | −3.71 ± 4.98 |
K4 | 13.81 ± 2.92 | 10.30 ± 1.65 | −3.51 ± 2.76 |
K5 | 15.69 ± 3.2 | 14.30 ± 1.48 | −1.39 ± 4.34 |
K6 | 16.24 ± 4.47 | 10.21 ± 5.20 | -4.19 ± 5.34 |