Table 3. Changes in selected athletic performance variables from pre- to post-training for each group. Variable VL10 (n = 14) VL30 (n = 14) Change p-value Hedges’ g (95% CI) Pre Post Pre Post VL10 VL30 Smith machine squat 1RM (kg) 78.9 ± 12.4 86.2 ± 11.5 80.9 ± 11.9 91.0 ± 12.2 9.2% 12.54% 0.001 -0.23 (-0.35-to 0.10) Squat jump height (cm) 31.1 ± 2.0 33.6 ± 2.1 31.2 ± 2.3 33.1 ± 2.4 7.80% 6.18% 0.127 +0.23 (-0.07 to +0.52) Countermovement jump height (cm) 35.1 ± 1.9 38.6 ± 2.7 35.4 ± 2.3 38.1 ± 2.5 9.76% 7.46% 0.058 +0.37 (+0.01 +0.75) Standing long jump distance (cm) 195.4 ± 14.0 201.7 ± 12.7 194.7 ± 10.2 199.6 ± 10.2 3.25% 2.49% 0.031 +0.12 (+0.01 to +0.23) 30-m sprint time (s) 5.522 ± 0.208 5.463 ± 0.205 5.503 ± 0.170 5.469 ± 0.168 1.07% 0.61% 0.006 +0.13 (+0.04 to +0.22) Values are mean±SD. Percentage changes indicate improvements and were calculated as [(post−pre)/pre] × 100, except for 30-m sprint time, for which [(pre − post)/pre] ×100 was used. The reported p values refer to the group×time interaction from the 2×2 mixed-design ANOVA. Hedges’g represents the standardized between-group difference in pre-to-post change using the pooled baseline SD; positive values favor VL10 and negative values favor VL30. 1RM, one-repetition maximum; CI, confidence interval; VL10, 10% velocity-loss group; VL30, 30% velocity-loss group.