Table 2 Maximum principal strains (%) resulting from exemplar physical reconstructions of common head impacts specific to ASF field position.

From: A novel repetitive head impact exposure measurement tool differentiates player position in National Football League

Field Position

Event Type

Collapsed

Helmet

Shoulder

Hip

Ground

Mean MPS with 95% CI

QB

24.1, [15.9, 32.3]

11.9

—

27.4, [19.5, 35.3]

25.4, [19.7, 31.1]

RB

25.3, [18.7, 31.9]

16.3, [13.4, 19.2]

10.4, [4.5, 16.3]

18.0, [12.0, 24.0]

17.1, [11.8, 22.5]

WR

22.5, [0.139, 31.1]

14.1, [13.5, 14.7]

8.7, [4.9, 12.5]

25.2, [18.1, 32.3]

21.8, [16.9, 26.7]

TE

19.5, [14.4, 24.6]

17.0, [13.3, 20.7]

11.5, [3.8, 19.2]

22.7, [14.8, 30.6]

19.1, [15.8, 22.4]

OL

12.7, [8.3, 17.1]

14.1, [9.3, 18.9]

7.5, [3.7, 11.3]

20.8, [12.1, 29.5]

14.3, [11.1, 17.5]

DL

19.7, [14.0, 25.4]

17.6, [13.3, 21.9]

9.6, [0.8, 18.4]

12.5, [8.3, 16.7]

16.3, [13.4, 19.2]

LB

18.4, [14.3, 22.5]

18.3, [10.1, 26.5]

21.3, [7.6, 35.0]

17.3, [10.5, 24.1]

18.3, [14.9, 21.7]

DB

0.242, [17.8, 30.6]

18.0, [12.2, 23.8]

14.9, [0.5, 29.3]

23.5, [16.7, 30.3]

21.1, [17.1, 25.1]

  1. Results are presented as sample means. Values in square brackets indicate 95% Confidence Intervals.
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