Decrease in games played (year 1, year 2) | Decrease in playing time (year 1, year 2) | Decrease in performance (year 1, year 2) | |
NBA | |||
Amin et al 12 | NR | 5.11*, 4.42* (MPG) | 4.57*, 4.38* (PER) |
Minhas et al 13 | 25.8*, 16.5* | NR | 3.9*, 3.4* (PER) |
Trofa et al 14 | 24*, 23.2* | 52.8*, 53.6* (% of minutes) | 3.8*, 3.5* (PER) |
Lemme et al 3 | NR | NR | 2.9* (PER average) |
Khalil et al†15 | 20.2*, 19.7* (year 3) | 7.74*, 8.2* (year 3) (MPG) | 3.9*, 4.2* (year 3) |
NFL | |||
Trofa et al 14 | 2.1*, 2.2 (n.s.) | 0.9 n.s., 2.1 n.s. (starts) | 3.1*, 2.8* (SAV) |
Jack et al‡16 | DL 2.2*, other positions n.s. (games/season) | NR | RB* and LB*, other positions n.s. |
Mai et al‡17 | 2.7*, year 2 and 3 n.s. | NR | Year 1*, years 2 and 3 n.s. |
Yang et al 18 | 2.8*, 1.3 (n.s.) | NR | NR |
Parekh et al§19 | 5.5 (3-year average) | NR | Decreased |
NCAA football | |||
Wise et al 22 | NR | NR | Qualitative stats by position group |
MLB | |||
Trofa et al 14 | 43.4 n.s., 16.4 n.s. | 133.7 n.s., 209.9 n.s. (innings) | 88% (n.s.), 112% (n.s.) (BA or 1/ERA) |
Saltzman et al¶21 | 25.2 | 71% (average PA) | 44% of WAR |
Soccer | |||
Trofa et al 20 | 5 n.s., 6.1 n.s. | 79 n.s., 72* (% of minutes) | 1.5 n.s., 2.6 n.s. (goals) |
Grassi et al 23 | Year 1*, year 2 n.s. | NR | NR |
Listed as the first and second season the player was able to RTP unless noted otherwise.
*Represents statistically significant value.
†Performed analysis at 1 and 3 years after injury.
‡Jack et al 16 and Mai et al 17 evaluated performance individually based on position-specific formulas.
§Parekh et al 19 did not perform statistical analysis and compared games and statistics defined as ‘power rating’ 3 years before and after injury.
¶Saltzman et al 21 did not perform statistical comparisons for pre-injury and post-injury and all stats averaged over 3 years.
BA, batting average; DL, defensive lineman; ERA, earned runs average; LB, linebackers; MLB, Major League Baseball; MPG, minutes per game; NCAA, National Collegiate Athletic Association; NR, not reported; n.s., not significant; PA, plate appearances; PER, player efficiency rating; RB, running backs; SAV, season approximate value; WAR, wins above replacement.