Table 4. Physical fitness outcomes from baseline to week 8. Outcome Group Baseline Week 4 Week 8 Δ% Difference in change vs control (95% CI) p Holm p Hedges g (95% CI) Group × time p 20-m multistage fitness test distance (m) 1v1 SSG 432.38 ± 92.41 495.24 ± 101.37 558.10 ± 131.13 +29.1 120.95 (81.38 to 160.52) < 0.001 < 0.001 2.01 (1.26 to 2.76) < 0.001 3v3 SSG 442.86 ± 88.61 537.14 ± 145.37 599.05 ± 167.15 +35.3 151.43 (111.86 to 191.00) < 0.001 < 0.001 1.72 (1.01 to 2.43) Control 436.19 ± 60.21 443.81 ± 50.84 440.95 ± 55.67 +1.1 Reference Left-hand handgrip strength (kg) 1v1 SSG 12.76 ± 5.17 14.43 ± 5.10 16.38 ± 4.84 +28.4 3.62 (2.79 to 4.45) < 0.001 < 0.001 3.09 (2.18 to 3.99) < 0.001 3v3 SSG 13.33 ± 5.08 14.86 ± 4.69 16.76 ± 4.61 +25.7 3.43 (2.60 to 4.26) < 0.001 < 0.001 1.90 (1.17 to 2.64) Control 11.24 ± 5.12 11.81 ± 4.33 11.24 ± 5.12 +0.0 Reference Right-hand handgrip strength (kg) 1v1 SSG 12.57 ± 4.80 14.81 ± 5.35 17.95 ± 5.12 +42.8 4.95 (3.78 to 6.12) < 0.001 < 0.001 2.60 (1.77 to 3.43) < 0.001 3v3 SSG 12.62 ± 4.38 14.48 ± 4.84 17.81 ± 4.04 +41.1 4.76 (3.59 to 5.93) < 0.001 < 0.001 1.90 (1.16 to 2.63) Control 11.38 ± 3.99 11.52 ± 3.54 11.81 ± 3.50 +3.8 Reference Vertical jump height (cm) 1v1 SSG 25.14 ± 4.46 26.00 ± 4.47 27.91 ± 4.14 +11.0 2.39 (1.39 to 3.39) < 0.001 < 0.001 1.11 (0.46 to 1.77) < 0.001 3v3 SSG 27.11 ± 5.04 28.98 ± 5.41 30.94 ± 5.65 +14.1 3.44 (2.44 to 4.44) < 0.001 < 0.001 1.43 (0.75 to 2.11) Control 26.03 ± 2.85 25.90 ± 2.58 26.42 ± 2.83 +1.5 Reference Standing long jump distance (cm) 1v1 SSG 160.67 ± 14.78 162.05 ± 14.61 166.00 ± 13.99 +3.3 2.76 (0.97 to 4.56) 0.003 0.003 0.97 (0.33 to 1.62) < 0.001 3v3 SSG 163.81 ± 20.40 169.19 ± 20.77 172.43 ± 19.91 +5.3 6.05 (4.25 to 7.84) < 0.001 < 0.001 1.39 (0.72 to 2.07) Control 158.48 ± 9.85 159.05 ± 9.66 161.05 ± 9.97 +1.6 Reference Values at each time point are mean ± standard deviation. Δ% was calculated from raw group means as [(week 8 – baseline) / baseline] × 100. Model estimates are week 8 difference-in-differences versus control from linear mixed-effects models including group, time, and group × time, with participant as a random intercept. Positive model estimates indicate a greater increase than control. Holm p values were adjusted across the intervention-versus-control contrasts in the physical-fitness family. Hedges’ g is the standardized between-group difference in baseline-to-week 8 change versus control. SSG = small-sided games; CI = confidence interval.