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Table 3 Characteristics of collisions during match-play recorded by video notational analysis

From: Quantifying the Collision Dose in Rugby League: A Systematic Review, Meta-analysis, and Critical Analysis

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
  1. Data are reported as mean ± standard deviation (SD) unless otherwise stated. *Data are reported as mean (±95% confidence intervals) as SD was not able to be determined due to insufficient information. Game results for both teams involved at the game level, NR not reported, NRL National Rugby League, NYC National Youth Competition, NSWCup New South Wales Cup, QCup Queensland Cup, SL Super League, Team results at the individual team level