Table 1.
Gameplay characteristics categorized from video-confirmed head impacts.
| Variable | Category |
|---|---|
| Helmet Location | Front |
| Left | |
| Right | |
| Top/Crown | |
| Back | |
| Observed Direction | Front |
| Left | |
| Right | |
| Starting Stance | 2-point |
| 3- or 4-point | |
| Closing Distance | ≤5 yards |
| >5 yards | |
| Skill | Blocking |
| Engaging | |
| Tackling | |
| Striking | Striking Player |
| Player Struck | |
| Guardian Cap Impacts | None |
| Yes, 1 Player | |
| Yes, Both Players | |
| Play-type | Pass |
| Rush | |
| Individual | |
| Inside Run | |
| 1 vs. 1 |
Table 1 Categorical variables obtained from helmet-embedded accelerometers and video review.