Figure 3From: Mechanisms of quadriceps muscle weakness in knee joint osteoarthritis: the effects of prolonged vibration on torque and muscle activation in osteoarthritic and healthy control subjects Pre-vibration quadriceps and hamstrings peak torque (Nm) in the osteoarthritis and control groups. MVC, maximum voluntary isometric contraction at 90° of knee flexion. *Significant difference between groups (P = 0.005). Data are means and standard deviations.Back to article page