Table 1.
Players’ characteristics (mean ± standard deviations) according to Age Group (u10 and u12) and Birth Quarter (BQ1, BQ2, BQ3, and BQ4).
| u10 (n = 52) | u12 (n = 53) | Age Group Effect | BQ effect | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Variables | BQ1 (n = 25) |
BQ2 (n = 10) |
BQ3v (n = 9) | BQ4 (n = 8) |
BQ1 (n = 27) |
BQ2 (n = 14) |
BQ3 (n = 8) | BQ4 (n = 4) |
F (ηp2) | BF10 | F (ηp2) | BF10 | ||
| Age & Anthropometrics | Chronological Age (y) | 10.06 ± 0.09 | 9.83 ± 0.10 | 9.52 ± 0.13 | 9.35 ± 0.92 | 12.04 ± 0.08 | 11.8 ± 0.06 | 11.57 ± 0.07 | 11.27 ± 0.05 | 8667.39 (0.98) *** | >100 | 264.20 (0.89) *** | 9.132 | |
| Height (cm) | 141 ± 6 | 142 ± 7 | 138 ± 4 | 135 ± 7 | 152 ± 9 | 151 ± 6 | 156 ± 12 | 148 ± 3 | 56.705 (0.381) *** | >100 | 1.694 (0.052) | 0.65 | ||
| Weight (kg) | 34.17 ± 4.79 | 35.96 ± 6.58 | 33.44 ± 4.14 | 32.80 ± 5.26 | 38.48 ± 6.81 | 40.03 ± 5.31 | 45.91 ± 11.32 | 39.65 ± 6.32 | 29.019 (0.240) *** | >100 | 0.661 (0.021) | 0.133 | ||
| Physical Fitness | Agility T-Test (sec) | 8.09 ± 0.57 | 7.96 ± 0.38 | 8.00 ± 0.49 | 8.30 ± 0.68 | 6.87 ± 2.00 | 7.25 ± 0.42 | 7.56 ± 0.33 | 7.65 ± 0.29 | 6.699 (0.071) * | >100 | 0.598 (0.02) | 0.157 | |
| Speed 24 m (sec) | 4.59 ± 0.24 | 4.57 ± 0.26 | 4.52 ± 0.18 | 4.55 ± 0.19 | 4.22 ± 0.27 | 4.19 ± 0.24 | 4.15 ± 0.26 | 4.40 ± 0.08 | 26.435 (0.233) *** | >100 | 0.666 (0.022) | 0.114 | ||
| Endurance—TTE (min) | 6.50 ± 2.37 | 6.40 ± 1.83 | 6.11 ± 1.75 | 6.76 ± 1.51 | 8.78 ± 1.55 | 9.62 ± 1.54 | 8.68 ± 1.41 | 8.16 ± 1.16 | 20.324 (0.220) *** | >100 | 0.313 (0.013) | 0.187 | ||
| Game Intelligence | 3.19 ± 0.96 | 3.28 ± 1.08 | 3.24 ± 0.78 | 2.63 ± 1.01 | 3.25 ±0.93 | 3.20 ± 1.03 | 2.90 ± 1.45 | 2.65 ± 1.28 | 0.139 (0.001) | 0.206 | 1.059 (0.032) | 0.202 | ||
| Attentional Functioning | ANTI trials | Mean RT ANTI (ms) | 812 ± 176 | 7781 ± 142 | 864 ± 77 | 831 ± 125 | 723 ± 124 | 722 ± 11 | 659 ± 98 | 668 ± 58 | 13.937 (0.150) *** | 83.896 | 0.088 (0.003) | 0.086 |
| Mean RT SD ANTI (ms) | 153 ± 38 | 143 ± 42 | 173 ± 12 | 162 ± 28 | 148 ± 34 | 149 ± 20 | 139 ±22 | 135 ± 10 | 3.341 (0.041) | 0.5 | 0.243 (0.009) | 0.097 | ||
| Mean Error ANTI Rate (%) | 9.0 ± 9.4 | 14.6 ± 13.5 | 5.7 ± 2.4 | 5.2± 4.8 | 6.5 ± 4.5 | 6.6 ± 6.7 | 8.9 ± 8.5 | 7.8 ± 5.4 | 0.368 (0.005) | 0.452 | 0.876 (0.032) | 0.146 | ||
| Alertness Index RT (ms) | 35 ± 53 | 56 ± 52 | 76 ± 61 | 51 ± 78 | 38 ± 68 | 48 ±65 | 63 ± 27 | 60 ± 42 | 0.024 (0.000) | 0.226 | 1.143 (0.042) | 0.282 | ||
| Alertness Index Error Rate (%) | −3.3 ± 11.7 | 5.4 ± 7.4 | −0.2 ± 7.6 | 2.9 ± 2.7 | 1.3 ± 5.3 | −0.5 ± 6.3 | 4.4 ± 6.3 | −3.1 ± 12.4 | 0.109 (0.001) | 0.27 | 1.007 (0.037) | 0.185 | ||
| Orienting Index RT (ms) | 23 ± 28 | 24 ± 63 | 33 ± 38 | 25 ± 41 | 34 ± 33 | 31 ± 31 | 44 ± 21 | 38 ± 27 | 1.288 (0.016) | 0.501 | 0.286 (0.011) | 0.102 | ||
| Orienting Index Error Rate (%) | 1.9 ± 6.9 | 2.5 ± 4.6 | −0.6 ± 2.8 | 2.3 ± 2.1 | 1.7 ± 6.5 | 0.9 ± 4.1 | 3.5 ± 3.4 | 5.3 ± 8.7 | 0.789 (0.016) | 0.232 | 0.373 (0.014) | 0.102 | ||
| Control Index RT(ms) | 74 ± 49 | 80 ± 39 | 72 ± 23 | 79 ± 46 | 67 ± 42 | 69 ± 31 | 71 ± 18 | 51 ± 52 | 1.248 (0.016) | 0.372 | 0.107 (0.004) | 0.082 | ||
| Control Index Error Rate (%) | 7.8 ± 8.6 | 15.2 ± 16.6 | 1.9 ± 5.2 | 4.5 ± 5.8 | 3.4 ± 6.3 | 5.9 ± 7.9 | 6.9 ± 6.5 | 3.9 ± 4.7 | 1.157 (0.014) | 0.921 | 2.101 (0.174) | 0.377 | ||
| VE Trials | Mean RT HIT (ms) | 888 ± 2204 | 812 ± 203 | 999 ± 90 | 879 ± 145 | 799 ± 143 | 757 ± 118 | 730 ± 168 | 734 ± 116 | 11.119 (0.123) *** | 20.971 | 0.763 (0.027) | 0.172 | |
| Mean RT SD HIT (ms) | 173 ± 31 | 149 ± 55 | 181 ± 29 | 171 ± 29 | 160 ± 31 | 136 ± 24 | 155 ± 30 | 148 ± 18 | 4.852 (0.058) * | 2.305 | 2.821 (0.093) * | 1.589 | ||
| Hits (%) | 64.9 ± 31.0 | 60.3 ± 36.5 | 80.0 ± 18.2 | 78.9 ± 19.4 | 70.9 ± 27.5 | 74.6 ± 21.3 | 64.8 ± 26.2 | 65.1 ± 24.8 | 0.092 (0.001) | 0.24 | 0.159 (0.006) | 0.092 | ||
| False Alarms (%) | 7.1 ± 10.1 | 8.4 ± 10.7 | 5.8 ± 5.5 | 6.0 ± 4.6 | 5.7 ± 4.4 | 3.4 ± 4.6 | 6.6 ± 6.6 | 7.6 ± 6.4 | 0.307 (0.004) | 0.366 | 0.079 (0.003) | 0.085 | ||
| AV trials | AV RT (ms) | 661 ± 105 | 610 ± 78 | 653 ± 118 | 602 ± 73 | 556 ± 93 | 536 ± 82 | 542 ± 54 | 547 ± 116 | 22.22 (0.207) *** | >100 | 0.697 (0.025) | 0.172 | |
| AV SD (ms) | 127 ± 54 | 98 ± 24 | 136 ± 43 | 133 ± 43 | 98 ± 33 | 90 ± 35 | 72 ± 16 | 66 ± 9 | 15.37 (0.153) *** | >100 | 0.844 (0.03) | 0.204 | ||
Note: Results of ANOVAs (F value and estimated effect sizes) and Bayesian analyses (Bayes factors, BF10) are included. * p < 0.05, ** p < 0.01, *** p < 0.001.