Skip to main content

Table 2 Kinetics and kinematics during gait, step activity and cross-over hop.

From: Knee kinematics and kinetics in former soccer players with a 16-year-old ACL injury – the effects of twelve weeks of knee-specific training

  Reference group Corresponding side ACL group injured side at baseline ACL group injured side at 12 w follow-up P-value
GAIT     
VGRF (BW) a 1.09 ± 0.1 1.12 ± 0.1 1.12 ± 0.1 0.448
Peak knee flexion at loading response (degrees) 17 ± 3 18 ± 4 18 ± 3 0.097
Knee extensor moment (Nm/kg), (internal moment) 0.42 ± 0.1 0.44 ± 0.2 0.49 ± 0.2 0.197
STEP ACTIVITY     
VGRF (BW) b 1.59 ± 0.2 1.66 ± 0.1 1.58 ± 0.2 0.119
Peak knee flexion of supporting limb (degrees) 52 ± 6 48 ± 9 50 ± 9 0.130
Knee extensor moment (Nm/kg), (internal moment) 0.56 ± 0.2 0.44 ± 0.3 0.54 ± 0.2 0.084
CROSS-OVER HOP     
VGRF (BW) b 1.88 ± 0.1 1.86 ± 0.2 1.85 ± 0.2 0.337
Peak knee flexion during landing (degrees) 49 ± 7 44 ± 6 48 ± 5 0.015
Knee extensor moment (Nm/kg), (internal moment) 1.49 ± 0.4 1.28 ± 0.5 1.55 ± 0.6 0.008
  1. a) VGRF in gait was measured during the first 25% of the gait cycle. b) VGRF in step and cross over hop were measured during the initial contact with the force plate of the step over limb.
  2. Mean ± SD for kinetics and kinematics during gait, step activity, cross-over hop for the reference group and the ACL group before and after the 12 week training programme. The paired samples t-test was used to compare the ACL group at baseline and at the 12 week follow-up.