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. Author manuscript; available in PMC: 2018 May 1.
Published in final edited form as: Sports Med. 2017 May;47(5):1003–1010. doi: 10.1007/s40279-016-0607-9

TABLE 1.

Cases by Position

Sport Position Exposed Cases
(N = 90)
Non-Exposed Cases
(N = 148)
Football

Defensive Back 8 14
Defensive Line 10 18
Linebacker 12 19
Offensive Line 9 16
Running Back 10 14
Wide Receiver 17 25
Lacrosse

Attack 1 1
Defender 6 10
Midfielder 2 4
Soccer

Attack 1 1
Defender 6 10
Midfielder 5 10
Basketball

Guard 1 2
Forward 3 4