Mixed-effects model-derived change in characteristic per season played (coefficient (95% CI))
| Change per season (904 observations for 291 players) | P value | |
| Body mass (kg) | +0.512 (0.406 to 0.618) | <0.001 |
| Per cent fat (%) | −0.408 (−0.475 to –0.341) | <0.001 |
| Fat-free mass (kg) | +0.896 (0.772 to 1.020) | <0.001 |
| Maximum speed (m/s) | +0.063 (0.045 to 0.082) | <0.001 |
| Momentum (kg⋅m/s) | +12.1 (9.6 to 14.6) | <0.001 |
| Kinetic energy (J) | +77.5 (60.4 to 94.6) | <0.001 |
| Distance covered (m/game)* | +11.4 (-6.4 to 29.3) | 0.2 |
*344 observations for 142 players.