Table 1. Ball-head impact exposure based on sex and age. |
|
Total Ball-Head Impacts |
Total Players |
Ball-Head Impacts per Player |
Ball-Head Impacts per Game |
95% CI |
Range (min-max) |
U12 Girls |
30 |
240 |
0.13 ± 0.07 |
3.00 ± 1.70 † ,# |
1.78-4.22 |
1-6 |
U12 Boys |
101 |
254 |
0.40 ± 0.16 |
10.10 ± 3.90 † ,# |
7.31-12.89 |
4-17 |
U13 Girls |
54 |
300 |
0.18 ± 0.13 |
5.40 ± 4.20 † |
2.4-8.4 |
2-16 |
U13 Boys |
133 |
294 |
0.45 ± 0.24 |
13.30 ± 7.45 # |
4.46-9.34 |
4-25 |
U14 Girls |
69 |
288 |
0.24 ± 0.11 |
6.90 ± 3.41 † |
4.46-9.34 |
3-12 |
U14 Boys |
192 |
298 |
0.64 ± 0.24 |
19.20 ± 7.44 † |
13.88-24.52 |
8-34 |
Females |
153 |
828 |
0.18 ± 0.11 |
5.10 ± 3.56 § |
3.83-6.37 |
1-16 |
Males |
426 |
846 |
0.50 ± 0.24 |
14.20 ± 7.34 § |
11.57-16.83 |
4-34 |
U12 |
131 |
494 |
0.26 ± 0.19 |
6.55 ± 4.67 * |
4.36-8.74 |
1-17 |
U13 |
187 |
594 |
0.31 ± 0.23 |
9.35 ± 7.15 |
6.01-12.69 |
2-25 |
U14 |
261 |
586 |
0.44 ± 0.28 |
13.05 ± 8.46 * |
9.09-17.01 |
3-34 |
Total |
579 |
1674 |
0.34 ± 0.24 |
9.65 ± 7.33 |
7.76-11.54 |
1-34 |
|
Ball-Head Impacts per Game and Ball-Head Impacts per Player: mean ± standard deviation; CI=confidence interval; |
† U14 boys > U12 girls, U12 boys, U13 girls, U14 girls; |
# U12 boys, U13 boys > U12 girls. |
|