Table 4

Muscle injury rate in different muscle groups following a full match exposure (≥90 min) categorised depending on short-term match congestion

Short-term match congestion (number of days between match exposures)
≤3 days4 days5 days6 days7–10 days
Hip/groin muscle injury rates
 Hip/groin muscle injuries, n (% of injuries)71 (10%)76 (11%)43 (16%)24 (8%)67 (9%)
 Hip/groin muscle injury rate/1000 hours (95% CI)2.4 (1.9 to 3.1)2.7 (2.1 to 3.3)3.9 (2.9 to 5.3)1.9 (1.3 to 2.8)2.0 (1.6 to 2.5)
 Hip/groin muscle injury rate ratio (95% CI)Reference group1.09 (0.79 to 1.51) 1.61 (1.10 to 2.35) 0.78 (0.49 to 1.24)0.82 (0.59 to 1.15)
Thigh muscle injury rates
 Thigh muscle injuries, n (% of injuries)171 (24%)174 (25%)65 (23%)58 (20%)161 (21%)
 Thigh muscle injury rate/1000 hours (95% CI)5.9 (5.1 to 6.8)6.1 (5.3 to 7.1)5.9 (4.7 to 7.6)4.6 (3.6 to 6.0)4.8 (4.1 to 5.6)
 Thigh muscle injury rate ratio (95% CI)Reference group1.04 (0.84 to 1.28)1.01 (0.76 to 1.35)0.79 (0.58 to 1.06)0.82 (0.66 to 1.02)
Lower leg muscle injury rates
 Lower leg muscle injuries, n (% of injuries)31 (4%)43 (6%)13 (5%)9 (3%)31 (4%)
 Lower leg muscle injury rate/1000 hours (95% CI)1.1 (0.7 to 1.5)1.5 (1.1 to 2.0)1.2 (0.7 to 2.0)0.7 (0.4 to 1.4)0.9 (0.7 to 1.3)
 Lower leg muscle injury rate ratio (95% CI)Reference group1.42 (0.89 to 2.25)1.12 (0.58 to 2.13)0.67 (0.32 to 1.41)0.87 (0.53 to 1.43)
  • Injury rate ratios were analysed between short-term match congestion groups using ≤3 days as reference.

  • Values in bold indicate significant difference compared with ≤3 days.