| Training volume | |
| n (%) | OR (95% CI) |
Gender | 671 |
|
Girl | 288 (43) | 1 |
Boy | 383 (57) | 2.1 (1.4 - 3.2)** |
Goal orientation | 670 |
|
No orientation | 136 (20) | 1 |
Junior level | 253 (38) | 1.7 (0.8 - 3.6) |
Adult level | 282 (42) | 3.6 (1.8 - 7.3)*** |
Competition level | 671 |
|
Regional /recreational | 231 (35) | 1 |
National | 424 (65) | 5.3 (3.0 - 9.3)*** |