Table 3 Estimated means and confidence intervals (CI) for peak linear accelerations and rotational velocities with respect to situational factors proceeding head impact (visible signs of concussion, penalty), 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 | |
Presence of visible sign(s) of concussion | n = 234 | n = 234 | 0.678 | n = 234 | 0.049 |
No | 209 (89.3%) | 34.7 (32.4–37.2) | 14.0 (13.4–14.7) | ||
Yes | 25 (10.7%) | 37.3 (28.2–49.2) | 17.6 (14.6–21.2) | ||
Penalization of head impact† | n = 223 | n = 223 | 0.821 | n = 223 | 0.152 |
No | 204 (92.7%) | 36.0 (30.8–42.2) | 14.2 (13.7–14.8) | ||
Yes | 16 (7.3%) | 37.8 (24.7–57.9) | 17.6 (13.6–22.7) | ||
Penalty type*,† | n = 223 | n = 223 | 0.838 | n = 223 | 0.049 |
No infraction | 207 (92.8%) | 36.0 (30.8–42.2) | 14.2 (13.7–14.8) | ||
Minor infraction | 12 (5.4%) | 35.1 (21.7–59.7) | 13.9 (10.2–18.9) | ||
Major infraction | 4 (1.8%) | 46.1 (19.9–106.6) | 28.3 (16.8–47.6) | ||
