Table 2 Selected charateristics of the 31 critical incidents on the head in 100 games
| Â | total number (percentage) |
|---|---|
Position of player | |
 Defender | 15 (48.4%) |
 Midfield player | 11 (35.5%) |
 Striker | 5 (16.1%) |
Area on field | |
 Midfield | 19 (61.3%) |
 Outer track | 7 (22.6%) |
 Pentalty area | 5 (16.1%) |
Minute of the match | |
 min 0 to 15 | 0 (0) |
 min 16 to 30 | 10 (32.3%) |
 min 31 to 45 | 6 (19.3%) |
 min 46 to 60 | 2 (6.4%) |
 min 61 to 75 | 10 (32.3%) |
 min 76 to 90 | 3 (9.7%) |
Playing situation | |
 Free play | 28 (90.3%) |
 Free kick | 2 (6.5%) |
 Corner | 1 (3.2%) |
Match score | |
 Draw | 11 (36.7%) |
 Opponent team leading | 10 (33.3%) |
 Own team leading | 9 (30.0%) |
Basic action of the player | |
 Air time | 28 (90.3%) |
 Running | 2 (6.5%) |
 Standing | 1 (3.2%) |
Heading duel | |
 Yes | 29 (93.5%) |
 No | 2 (6.5%) |
Body contact | |
 Direct contact | 30 (96.8%) |
 No contact | 1 (3.2%) |
Affected head area | |
 Occipital | 10 (32.3%) |
 Facial | 8 (25.8%) |
 Frontal | 8 (25.8%) |
 Parietal | 5 (16.1%) |
Direction of attack | |
 Back | 11 (37.9%) |
 Front | 11 (37.9%) |
 Side | 6 (20.7%) |
 Both sides | 1 (3.4%) |
Contact to the ground | |
 No contact with ground | 27 (87.1%) |
 One leg | 3 (9.7%) |
 Two legs | 1 (3.2%) |
Type of contact | |
 Collision with opponent player | 19 (61.3%) |
 Hit by opponent player (elbow) | 6 (19.4%) |
 None | 3 (9.7%) |
 Collision with team player | 1 (3.2%) |
 Collision with ball | 1 (3.2%) |
 Hit by team player | 1 (3.2%) |
Affect on player | |
 Able to leave the field on both feet | 20 (64.5%) |
 No treatment | 9 (29.0%) |
 Carried off | 2 (6.5%) |