Player demographics (mean, SD and number) for participants in the intervention and control arms
| Level | Age (years) | Mass (kg) | Height (cm) |
| All players | 25.5 (5.6) (n=673) | 94.4 (13.9) (n=1346) | 181.6 (7.3) (n=1355) |
| Intervention | 26.1 (5.7) (n=273) | 93.6 (13.3) (n=675) | 181.8 (7.5) (n=682) |
| Control | 25.0 (5.5) (n=400) | 95.2 (14.5) (n=671) | 181.4 (7.1) (n=673) |