Table 1.
Annual Number of Head Impacts Sustained by Players During Practices, Games, and Over an Entire Season
| Practices | Mean | Standard deviation | Median | Minimum | Maximum |
|---|---|---|---|---|---|
| Linemen | 509.4 | 239.6 | 494 | 64 | 1463 |
| Quarterbacks | 146.0 | 69.6 | 165 | 43 | 227 |
| Receivers, cornerbacks, and safeties | 204.0 | 105.9 | 189 | 32 | 463 |
| Tight ends, running backs, and linebackers | 335.2 | 179.3 | 340 | 22 | 742 |
| Kicker | 5 | n/a | n/a | n/a | n/a |
| Games | |||||
| Linemen | 364.6 | 265.9 | 336 | 15 | 1164 |
| Quarterbacks | 320.6 | 203.5 | 315 | 6 | 545 |
| Receivers, cornerbacks, and safeties | 189.8 | 160.7 | 149.5 | 11 | 651 |
| Tight ends, running backs, and linebackers | 290.8 | 186.9 | 249 | 11 | 703 |
| Season totals | |||||
| Linemen (n=41) | 868.3 | 434.9 | 872 | 73 | 2235 |
| Quarterbacks (n=4) | 466.6 | 243.2 | 519 | 49 | 662 |
| Receivers, cornerbacks, and safeties (n=28) | 372.3 | 236.9 | 318 | 45 | 895 |
| Tight ends, running backs, and linebackers (n=27) | 619.3 | 296.9 | 617 | 74 | 1140 |
| Kicker (n=1) | 5 | n/a | n/a | n/a | n/a |
Positions are not mutually exclusive, as some players may have played multiple positions in different years.