Table 3.
General data of the study population (n = 207), divided into age groups. kg: kilograms; cm: centimeters; SD: standard deviation. ** p < 0.01; *** p < 0.001.
| Age Group [Years] | n | Mean Age/SD [Years] | Median Age [Years] | Weight [kg] (Mean/SD/Range) |
Height [cm] (Mean/SD/Range) |
BMI [kg/m2] (Mean/SD/Range) |
Training Time per Week [min] (Mean/SD) |
Football Exposure [Active Seasons] (Mean/SD) |
|
|---|---|---|---|---|---|---|---|---|---|
| I | 7 to 11 | 74 | 9.9/0.9 | 10 | 37.5/8.5/ 21.9–65.3 |
143/8/ 124–161 |
18.0/2.9/ 13.7–26.9 |
229/86 | 5.7/1.7 |
| II | 12 to 14 | 77 | 12.8/0.8 | 13 | 50.2/10.2/ 32.0–76.0 |
163/10/ 142–188 |
18.8/2.7/ 12.1–27.2 |
287/71 | 7.6/1.7 |
| III | 15 to 18 | 56 | 16.6/1.3 | 17 | 68.0/10.4/ 46.1–97.4 |
178/7/ 163–197 |
21.3/2.6/ 16.1–27.0 |
243/68 | 10.9/3.0 |
| p values | I/II/III *** | I/II/III *** | I/II/III *** | I vs. II: p = 0.09 I vs. III *** II vs. III *** |
I vs. II *** I vs. III: p = 0.35 II vs. III ** |
I/II/III *** | |||