TABLE 2

Frequency of Recorded Impacts and Resultant Linear Acceleration, Rotational Acceleration, and HITsp of Head Impacts Sustained

No. of Collisions (%)Linear Acceleration, gRotational Acceleration, rad/s2HITsp
Mean (95% CI)PaMean (95% CI)PaMean (95% CI)Pa
Body collision type
    Along playing boards421 (63.2)20.7 (19.4–22.2).0361367.7 (1295.6–1443.9).00315.5 (14.7–16.3).055
    Open iceb245 (36.8)22.4 (20.6–24.3)Reference1564.7 (1440.3–1699.9)Reference16.3 (15.3–17.3)Reference
Anticipation
    Anticipated564 (84.7)21.1 (19.5–22.8).1351414.3 (1330.6–1503.3).13815.8 (15.0–16.6).755
    Unanticipatedb102 (15.3)22.6 (20.9–24.5)Reference1550.0 (1377.4–1744.2)Reference15.5 (14.2–17.1)Reference
Overall impression
    Anticipated, good315 (47.3)20.7 (19.1–22.5).0981409.4 (1303.0–1524.4).14515.6 (14.6–16.5).990
    Anticipated, poor249 (37.4)21.4 (19.6–23.4).2791420.4 (1312.4–1537.3).18416.1 (15.2–17.0).491
    Unanticipatedb102 (15.3)22.6 (20.9–24.5)Reference1550.0 (1377.4–1744.2)Reference15.5 (14.2–17.1)Reference
Total66621.5 (20.8–22.3)1441.1 (1386.6–1497.7)15.8 (15.4–16.3)
  • a P values are relative to the reference category used in the random-intercepts, general mixed linear model analyses.

  • b Reference category used in mixed linear models.