Figure 4From: 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 Change in quadriceps and hamstrings peak torque following vibration. Percentage change in quadriceps and hamstrings peak torque (Nm) following vibration in the osteoarthritis and control groups. *Significant difference between groups (P = 0.011). **Significant change from zero (P < 0.05). Data are means and standard error of the means.Back to article page