Table 3

Mean isokinetic peak torques (percentage compared with contralateral leg) and players with a greater than 10% deficit without reinjury compared with players with reinjury within 2 months of RTS

No reinjury (n=46)Reinjury (n=6)p Value
Mean peak torque
 Q conc 60°•s-199.7%104.1%0.27
 H conc 60°•s-194.9%96.7%0.76
 Q conc 300°•s-198.4%103.8%0.31
 H conc 300°•s-198.1%94.7%0.54
 H ecc96.7%90.6%0.18
10% deficit
 Q conc 60°•s-17 (15.2%)0 (0%)0.40
 H conc 60°•s-118 (39.1%)2 (33.3%)0.58
 Q conc 300°•s-112 (26.1%)0 (0%)0.19
 H conc 300°•s-113 (28.3%)1 (16.7%)0.48
 H ecc12 (26.1%)1 (16.7%)0.53
  • For the mean peak torques, the percentage is of the uninjured leg, that is, a value lower than 100% reflects a lower torque than the uninjured leg. For the 10% deficit category, the number (percentage) shown is for those athletes displaying a deficit of >10% with their uninjured leg for the individual mode of testing.

  • H conc, hamstrings concentric, H ecc, hamstrings eccentric; Q conc, quadriceps concentric; RTS, return to sport.