Study | Competition (season[s]) | Positional group | Type of collision recorded | Frequency of collisions (n=) mean (±SD) | Relative frequency of collisions (n min−1=) mean (±SD) |
---|---|---|---|---|---|
Austin et al. [46] | NRL (2008) | Hit-up forwards | Tackles and ball carries | 33.2 (NR) | NR |
 | Adjustables | Tackles and ball carries | 17.8 (NR) | NR | |
 | Outside backs | Tackles and ball carries | 8.2 (NR) | NR | |
Cummins et al. [26] | NRL (NR) | Hit-up forwards | Tackles | 21.5 (6.1) | 0.52 (0.09) |
 |  | Ball carries | 8.9 (3.7) | 0.20 (0.03) | |
 |  | Tackles and ball carries | 30.5 (9.6) | 0.78 (0.11) | |
 | Wide-running forwards | Tackles | 20.6 (5.0) | 0.39 (0.10) | |
 |  | Ball carries | 7.9 (3.7) | 0.20 (0.10) | |
 |  | Tackles and ball carries | 29.8 (6.2) | 0.57 (0.20) | |
 | Adjustables | Tackles | 16.7 (12.8) | 0.41 (0.20) | |
 |  | Ball carries | 4.9 (4.6) | 0.10 (0.00) | |
 |  | Tackles and ball carries | 21.7 (12.3) | 0.49 (0.20) | |
 | Outside backs | Tackles | 7.0 (6.1) | 0.08 (0.07) | |
 |  | Ball carries | 11.2 (2.0) | 0.10 (0.02) | |
 |  | Tackles and ball carries | 18.3 (5.4) | 0.21 (0.06) | |
Dempsey et al. [8] | SL (2011–2012) | Backs | Tackles | 13.4 (9.5) | 0.16 (0.11) |
 |  | Ball carries | 11.9 (5.2) | 0.15 (0.08) | |
 | Forwards | Tackles | 25.5 (8.4) | 0.47 (0.23) | |
 |  | Ball carries | 10.5 (3.6) | 0.20 (0.10) | |
Fletcher et al. [70] | SL (2012) | Hit-up forwards | Tackles | 24.0 (13.0) | NR |
 |  | Ball carries | 8.5 (5.0) | NR | |
 |  | Tackles and ball carries | 32.0 (15.0) | 0.60 (0.30) | |
 | Adjustables | Tackles | 14.0 (12.0) | NR | |
 |  | Ball carries | 4.0 (4.0) | NR | |
 |  | Tackles and ball carries | 21.0 (12.0) | 0.30 (0.30) | |
 | Outside backs | Tackles | 8.0 (10.0) | NR | |
 |  | Ball carries | 9.0 (4.0) | NR | |
 |  | Tackles and ball carries | 19.0 (9.0) | 0.30 (0.10) | |
Gabbett and Ryan [71] | NRL (2008–2009) | Team | Tackles | 24.0 (NR) | NR |
Gabbett et al. [49] | NRL (2008–2010) | Hit-up forwards | Tackles (total defensive) | 23.0 (21.0,25.0)* | NR |
 |  | Ball carries (total attack) | 13.0 (11.0,15.0) * | NR | |
 |  | Tackles and ball carries | 36.0 (32.0,40.0) * | NR | |
 | Wide-running forwards | Tackles (total defensive) | 30.0 (26.0,34.0) * | NR | |
 |  | Ball carries (total attack) | 17.0 (13.0,21.0) * | NR | |
 |  | Tackles and ball carries | 47.0 (42.0,52.0) * | NR | |
 | Adjustables | Tackles (total defensive) | 19.0 (15.0,23.0) * | NR | |
 |  | Ball carries (total attack) | 10.0 (7.0,13.0) * | NR | |
 |  | Tackles and ball carries | 29.0 (26.0,32.0) * | NR | |
 | Outside backs | Tackles | 11.0 (9.0,13.0) * | NR | |
 |  | Ball carries | 13.0 (12.0,14.0) * | NR | |
 |  | Tackles and ball carries | 24.0 (22.0,27.0) * | NR | |
Gabbett et al. [50] | NRL (2008–2011) | Team | Tackles | 17.1 (9.1) | NR |
 |  | Ball carries | 8.8 (2.8) | NR | |
King et al. [41] | International (2008) | Game | Tackles and ball carries | 620.6 (NR) | NR |
 | Backs | Tackles | 377.0 (22.9) | NR | |
 |  | Ball carries | 285.7 (21.6) | NR | |
 | Forwards | Tackles | 623.0 (29.4) | NR | |
 |  | Ball carries | 238.1 (19.6) | NR | |
 | Hit-up forwards | Tackles | 386.5 (23.3) | NR | |
 |  | Ball carries | 340.9 (32.4) | NR | |
 | Adjustables | Tackles | 404.8 (23.8) | NR | |
 |  | Ball carries | 224.3 (26.2) | NR | |
 | Outside backs | Tackles | 208.6 (17.1) | NR | |
 |  | Ball carries | 434.9 (36.6) | NR | |
NRL (2008) | Game | Tackles and ball carries | 650.8 (NR) | NR | |
 | Backs | Tackles | 343.6 (22.5) | NR | |
 |  | Ball carries | 257.2 (19.8) | NR | |
 | Forwards | Tackles | 656.4 (31.2) | NR | |
 |  | Ball carries | 229.7 (18.7) | NR | |
 | Hit-up forwards | Tackles | 378.5 (23.6) | NR | |
 |  | Ball carries | 366.3 (34.1) | NR | |
 | Adjustables | Tackles | 451.0 (25.7) | NR | |
 |  | Ball carries | 199.1 (12.9) | NR | |
 | Outside backs | Tackles | 170.5 (15.9) | NR | |
 |  | Ball carries | 434.6 (37.0) | NR | |
King et al. [28] | NRL (NR) | Game | Tackles (completed) | 590.0 (50.0) | NR |
 | Backs | Tackles and ball carries (completed and missed) | 14.6 (7.7) | NR | |
 | Forwards | Tackles and ball carries (completed and missed) | 27.1 (8.3) | NR | |
McLellan and Lovell [60] | NRL (NR) | Team | Tackles | 19.9 (10.5) | NR |
 |  | Ball carries | 12.2 (3.6) | NR | |
 | Backs | Tackles | 10.7 (8.9) | NR | |
 |  | Ball carries | 11.7 (4.6) | NR | |
 | Forwards | Tackles | 26.1 (15.3) | NR | |
 |  | Ball carries | 13.8 (5.2) | NR | |
McLellan et al. [38] | NRL (NR) | Team | Tackles | 14.9 (10.5) | NR |
 |  | Ball carries | 10.2 (3.8) | NR | |
 | Backs | Tackles | 10.7 (8.0) | NR | |
 |  | Ball carries | 9.7 (3.5) | NR | |
 | Forwards | Tackles | 20.1 (11.3) | NR | |
 |  | Ball carries | 10.9 (4.2) | NR | |
Sirotic et al. [32] | NRL (2004–2005) | Team | Tackles | NR | 0.25 (0.16) |
 |  | Ball carries | NR | 0.15 (0.08) | |
NSWCup (2004–2005) | Team | Tackles | NR | 0.28 (0.16) | |
 |  | Ball carries | NR | 0.15 (0.08) | |
Sirotic et al. [63] | NRL (2004–2005) | Backs | Tackles | NR | 0.12 (0.09) |
 |  | Ball carries | NR | 0.11 (0.04) | |
 | Forwards | Tackles | NR | 0.41 (0.07) | |
 |  | Ball carries | NR | 0.25 (0.09) | |
Sperenza et al. [64] | QCup (2014) | Team | Tackles | 18.0 (NR) | NR |
 | Backs | Tackles | 13.2 (8.5) | NR | |
 | Forwards | Tackles | 24.3 (6.5) | NR | |
Twist et al. [66] | SL (2010) | Backs | Tackles | 13.6 (7.9) | 0.2 (0.10) |
 |  | Ball carries | 11.6 (3.4) | 0.1 (0.04) | |
 |  | Tackles and ball carries | 25.2 (8.0) | 0.3 (0.10) | |
 | Forwards | Tackles | 25.5 (13.7) | 0.5 (0.20) | |
 |  | Ball carries | 12.7 (6.1) | 0.3 (0.10) | |
 |  | Tackles and ball carries | 38.2 (18.7) | 0.7 (0.30) | |
Woods et al. [1] | NRL (2016) | Game | Tackles | 314.3 (15.9) | NR |
 |  | Ball carries | 164.3 (13.5) | NR | |
SL (2016) | Game | Tackles | 336.1 (11.8) | NR | |
 |  | Ball carries | 179.0 (8.1) | NR | |
Woods et al. [68] | NRL (2016) | Game | Tackles | 325.0 (39.7) | NR |
 |  | Ball carries | 170.2 (19.8) | NR | |
NYC (2016) | Game | Tackles | 283.4 (35.6) | NR | |
 |  | Ball carries | 147.2 (17.4) | NR |