Table 1 Estimated means and confidence intervals (CI) for peak linear accelerations and rotational velocities with respect to situational factors preceding head impact (playing zone, location on ice, puck possession, and direction of gaze), within ± 10 s of the reference time.
From: Associations between the circumstances and severity of head impacts in men’s university ice hockey
Frequency | Linear acceleration (g) | Rotational velocity (rad/s) | |||
|---|---|---|---|---|---|
Count (% of head impacts captured) | Mean (95% CI) | p value | Mean (95% CI) | p value | |
Playing zone* | n = 234 | n = 234 | 0.468 | n = 234 | 0.096 |
Offensive zone | 128 (54.7%) | 38.2 (25.3–57.7) | 14.4 (13.9–14.9) | ||
Defensive zone | 76 (32.5%) | 31.6 (25.7–38.8) | 13.6 (12.1–15.3) | ||
Neutral zone | 30 (12.8%) | 36.8 (26.5–51.2) | 17.5 (14.5–21.2) | ||
Location on ice | n = 234 | n = 234 | 0.385 | n = 234 | 0.273 |
Perimeter | 181 (77.4%) | 34.6 (31.8–37.6) | 14.4 (13.6–15.2) | ||
Open ice | 41 (17.5%) | 32.6 (26.5–40.2) | 14.1 (12.3–16.2) | ||
Near the net (crease) | 12 (5.1%) | 47.6 (30.1–75.4) | 18.8 (13.8–25.6) | ||
Puck possession* | n = 234 | n = 234 | 0.987 | n = 234 | 0.580 |
Clear possession | 30 (12.8%) | 35.2 (26.8–46.1) | 14.0 (11.7–16.8) | ||
No possession** | 204 (87.2%) | 35.1 (33.1–37.2) | 14.9 (14.3–15.5) | ||
Looking in direction of collision* | n = 234 | n = 234 | 0.706 | n = 234 | 0.919 |
Yes | 141 (60.3%) | 34.5 (31.7–37.6) | 14.7 (13.9–15.6) | ||
No | 93 (39.7%) | 36.0 (31.2–41.5) | 14.6 (13.3–16.1) | ||
