Impact characteristics from video review of game impacts greater than 70 g, n=122
| Frequency, n (%) | |
| Activity during impact | |
| No ball possession | |
| Loose ball situation | 35 (28.7) |
| Defending/Delivering a check | 39 (32.0) |
| Hit by shot or deflection | 4 (3.3) |
| Setting a pick | 4 (3.3) |
| Face off | 2 (1.6) |
| With ball possession | |
| Attacking | 35 (28.7) |
| Preparing to pass/clear the ball | 3 (2.5) |
| Helmet impact location | |
| Front | 46 (37.8) |
| Back | 9 (7.4) |
| Bottom | 13 (10.7) |
| Top | 13 (10.7) |
| Right | 15 (12.3) |
| Left | 26 (21.3) |
| Impact source | |
| Stick | 11 (9.0) |
| Ball | 4 (3.3) |
| Opponent’s body | 94 (77.0) |
| Opponent’s helmet | 9 (7.4) |
| Ground | 4 (3.3) |