Table 2.
Comparison of strength and power performance assessment for within- and between-group (mean ± SD)
| Assessment | Intervention | Pre | Post | Δ(%) | p value | ES |
|---|---|---|---|---|---|---|
| 1RM (kg) | VRT | 123.18 (27.67) | 168.09 (27.12) | 36.5% | < 0.001 | 1.58 (Large) |
| CRT | 130.67 (14.84) | 172.89 (16.08) | 32.3% | < 0.001 | 2.60 (Large) | |
| Δ(%) | -6.1% | -2.9% | ||||
| p value | 0.476 | 0.646 | ||||
| ES | 0.31 | 0.2 | ||||
| CMJ (cm) | VRT | 48.96 (6.33) | 55.29 (8.34) | 12.9% | 0.002 | 0.82 (moderate) |
| CRT | 46.03 (5.29) | 48.60 (6.10) | 5.6% | 0.02 | 0.43 (small) | |
| Δ (%) | 6% | 12.1% | ||||
| p value | 0.283 | 0.06 | ||||
| ES | 0.48 | 0.86 | ||||
| SJ (cm) | VRT | 41.81 (4.13) | 50.76 (6.06) | 21.4% | < 0.001 | 1.66 (Large) |
| CRT | 39.40 (3.96) | 44.47 (3.68) | 12.9% | < 0.001 | 1.26 (moderate) | |
| Δ (%) | 6.1% | 14.1% | ||||
| p value | 0.202 | 0.014 | ||||
| ES | 0.57 | 1.17 | ||||
| SBJ (cm) | VRT | 268.36 (16.42) | 276.27 (20.91) | 2.9% | 0.029 | 0.40 (small) |
| CRT | 256.22 (19.01) | 261.44 (16.99) | 2% | 0.094 | 0.28 (trivial) | |
| Δ (%) | 4.7% | 5.7% | ||||
| p value | 0.143 | 0.104 | ||||
| ES | 0.66 | 0.74 | ||||
| 10 m sprint (s) | VRT | 1.73 (0.08) | 1.72 (0.07) | -0.6% | 0.466 | -0.13 (trivial) |
| CRT | 1.78 (0.09) | 1.77 (0.07) | -0.6% | 0.689 | -0.12 (trivial) | |
| Δ (%) | -2.8% | -2.8% | ||||
| p value | 0.213 | 0.153 | ||||
| ES | -0.57 | -0.68 | ||||
| 20 m sprint (s) | VRT | 3.01 (0.13) | 3.00 (0.12) | -0.3% | 0.709 | -0.08 (trivial) |
| CRT | 3.10 (0.13) | 3.11 (0.14) | 0.3% | 0.729 | 0.07 (trivial) | |
| Δ (%) | -2.9% | -3.5% | ||||
| p value | 0.161 | 0.076 | ||||
| ES | -0.66 | -0.81 |
RM: repetition maximum; CMJ: countermovement jump; SJ: squat jump; SBJ: standing broad jump; VRT: variable resistance training; CRT: constant resistance training; ES: effect size.