Table 2.
Demography, Exposure, and Injury characteristics.
| U12 | U13 | U14 | U15 | U16 | U17 | U19 | |
|---|---|---|---|---|---|---|---|
| Players (n) | 14 | 17 | 18 | 18 | 21 | 21 | 21 |
| Age (y, SD) | 11.7 (0.4) | 12.8 (0.5) | 13.4 (0.4) | 14.5 (0.5) | 15.6 (0.5) | 16.6 (0.5) | 18.0 (0.8) |
| Stature (cm, SD) | 149.0 (7.5) | 157.5 (7.1) | 162.1 (7.3) | 169.9 (7.0) | 173.6 (6.3) | 176.7 (5.2) | 181.7 (7.8) |
| Body mass (kg, SD) | 42.5 (5.4) | 44.9 (6.0) | 49.0 (5.6) | 55.9 (6.0) | 62.4 (6.1) | 69.8 (6.7) | 75.1 (7.5) |
| Time-loss injuries (n) | 4 | 4 | 13 | 12 | 22 | 20 | 32 |
| Total time lost (days) | 38 | 86 | 294 | 257 | 629 | 148 | 1022 |
| Overall injury incidence | 1.4 | 1.2 | 2.6 | 2.3 | 2.8 | 2.6 | 4.0 |
| Mean days lost per injury (95% CI) | 9.5 (3.6–15.4) |
21.5 (0–51.7) |
22.6 (7.2–37.9) |
21.4 (6.4–36.5) |
28.6 (10–46.8) |
7.4 (5.2–9.6) |
31.9 (10.3–53.6) |
| Injury burden (95% CI) | 13.3 (5.0–21.6) |
25.8 (0–52.0) |
58.8 (18.7–94.9) |
49.2 (14.7–84) |
80.1 (28–131) |
19.2 (13.5–25) |
127.6 (41.2–214.4) |