Table 3.
Peak linear acceleration and peak rotational acceleration for VHIs by game scenario, direction of contact, and the intent of the tackler.
| n | Median (g) | 95% CI | Median (rad/s2) | 95% CI | |
|---|---|---|---|---|---|
| Game specific scenario | |||||
| Primary Carrier | 88 | 22.9 | 15–34.3 | 1,652 | 1,200.3–2,845.5 |
| Secondary Carrier | 25 | 19.4 | 16.7–24.4 | 1,262 | 875–2,493 |
| Primary Tackler | 188 | 20.6 | 14.4–32.1 | 1,724 | 1,199.8–2,764.8 |
| Secondary Tackler | 77 | 23.8 | 16.9–40.7 | 1,914 | 1,204–3,045 |
| Scrum | 2 | 18 | 15.5–20.5 | 901 | 857–945 |
| Ruck | 205 | 21.4 | 16.1–33.6 | 1,604 | 1,113–2,749 |
| Maul | 55 | 25.7 | 16.2–34.6 | 1,648 | 1,244.5–2,548 |
| Other | 15 | 20.3 | 18.1–30.9 | 1,347 | 1,057.5–2,958 |
| Direction of contact | |||||
| Side | 154 | 21.1 | 14.9–36.7 | 1,752 | 1,199.3–2,963.8 |
| Angle | 186 | 23.7 | 16.2–32.8 | 1,697.5 | 1,191.3–2,759 |
| Front | 200 | 20.9 | 15.4–33.7 | 1,761 | 1,175.5–2,772.5 |
| Above | 52 | 23.8 | 16.1–38.3 | 1,566 | 1,012.3–2,277 |
| Back | 63 | 22.6 | 14.9–33.4 | 1,524 | 1,023.5–2,340 |
| Intent of tackler (primary or secondary) | |||||
| Active Tackle | 158 | 21.6 | 15.8–35.8 | 1,636 | 1,200.3–2,870 |
| Passive Tackle | 131 | 21.5 | 15.2–33.8 | 1,759 | 1,147–2,755.0 |
| Wrap Tackle | 58 | 20.4 | 14.3–31.8 | 1,860 | 1,246.8–2,968.8 |
CI, confidence interval; rad/s2, radians per second squared.