Table 2.
Mean data ± standard deviation for each age group and effect sizes between groups.
| Test | U-18 | U-16 | U-14 | ES U-18 vs. U-16 | ES U-18 vs. U-14 | ES U-16 vs. U-14 |
|---|---|---|---|---|---|---|
| SLCMJR (cm) | 11.9 ± 2.6 | 11.7 ± 3.08 | 10.4 ± 2.34 | −0.07 (trivial) | −0.57 (small) | −0.51(small) |
| SLCMJL (cm) | 11.9 ± 3.2 | 11.8 ± 2.86 | 10.1 ± 2.77 | 0.02 (trivial) | −0.66 (moderate) | −0.76 (moderate) |
| As CMJ (%) | 10.9 ± 5.96 | 11.6 ± 8.47 | 12.1 ± 8.34 | 0.09 (trivial) | 0.16 (trivial) | 0.05 (trivial) |
| SLHR (cm) | 123.1 ± 12.6 | 123.6 ± 18.6 | 113.7 ± 10.2 | 0.11(trivial) | −0.63 (moderate) | −0.74 (moderate) |
| SLHL (cm) | 124.1 ± 3.6 * | 123.1 ±13.5 | 114.5 ± 8.95 | 0.04 (trivial) | −0.72 (moderate) | −0.90 (moderate) |
| As SLH (%) | 3.68 ± 3.01 | 5.11 ± 4.19 | 5.77 ± 4.19 | 0.04 (trivial) | 0.57 (small) | 0.15 (trivial) |
| 180° CODR (s) | 2.96 ± 0.14 | 2.99 ± 0.14 | 3.07 ± 0.13 | −0.03 (trivial) | 0.40 (small) | 0.90 (moderate) |
| 180° CODL (s) | 2.95 ± 0.14 * | 2.98 ± 0.13 ** | 3.12 ± 0.15 | −0.01(trivial) | 0.80 (moderate) | 0.74 (moderate) |
| As COD (%) | 2.57 ± 1.77 | 2.91 ± 2.31 | 3.32 ± 2.20 | 0.16 (trivial) | 0.37 (small) | 0.17 (trivial) |
| 10 m (s) | 2.05 ± 0.10 | 2.08 ± 0.10 | 2.12 ± 0.10 | −0.29 (small) | 0.23 (small) | 0.69 (moderate) |
| 20 m (s) | 3.57 ± 0.17 | 3.63 ± 0.17 | 3.66 ± 0.14 | −0.32 (small) | 0.72 (moderate) | 1.13 (moderate) |
| 30 m (s) | 5.04 ± 0.25 | 5.12 ± 025 | 5.16 ± 0.20 | −0.32 (small) | 0.60 (moderate) | 0.48 (small) |
| 40 m (s) | 6.53 ±0.34 | 6.62 ± 0.34 ** | 6.84 ± 0.26 | −0.27 (small) | 1.03 (moderate) | 0.87 (moderate) |
Note: SLCMJ: Single leg countermovement jump; SLH: Single leg hop test; 180° COD: 5 + 5 sprint test with a 180° change of direction; L: Left; R: Right; ES: Effect size. U-18: Under 18; U-16: Under 16; U-14: Under 14. * Significant difference (p < 0.05) between U-18 and U-14 players. ** Significant difference (p < 0.05) between U-16 and U-14 players.