Association of level of aggression and prevalent injury types, injury mechanism (trauma/overuse, activity involved)
| Injury type | Level of aggression (N=241) | Total | X2 | P value | |
| AO | AG | ||||
| Concussion | – | 1 | 1 | 7.98 | 0.63 |
| Fracture | – | 4 | 4 | ||
| Muscle rupture/strain | 3 | 19 | 22 | ||
| Abrasion | – | 2 | 2 | ||
| Other bone injury | 1 | 3 | 4 | ||
| Tendon rupture/tendinosis | – | 4 | 4 | ||
| Laceration | 2 | 2 | |||
| Dislocation | 1 | 3 | 4 | ||
| Sprain/ligament injury | 4 | 14 | 18 | ||
| Other injury | – | 1 | 1 | df=10 | |
| Total | 9 | 53 | 62 | ||
| Injury mechanism (trauma/overuse) | |||||
| Overuse | 1 | 6 | 7 | 5.47 | 0.7 |
| Trauma | 8 | 47 | 55 | df=2 | |
| Total | 9 | 53 | 62 | ||
| Injury mechanism (activity involved) | |||||
| Running | – | 4 | 4 | 15.55 | 0.41 |
| Dribbling | – | 4 | 4 | ||
| Sliding | 2 | 4 | 6 | ||
| Heading | 1 | 2 | 3 | ||
| Twisting/turning | – | 5 | 5 | ||
| Jumping/landing | 2 | 2 | 4 | ||
| Tackled by other player | 1 | 8 | 9 | ||
| Shooting | – | 3 | 3 | ||
| Falling/diving | 1 | 1 | 2 | ||
| Hit-by-ball | – | 2 | 2 | ||
| Tackling other player | – | 2 | 2 | ||
| Stretching | – | 4 | 4 | ||
| Collision | – | 6 | 6 | ||
| Kicked by other player | 2 | 5 | 7 | ||
| Unknown mechanism | – | 1 | 1 | df=15 | |
| Total | 9 | 53 | 62 | ||
AG, tendency to aggression; AO, tendency to anger.