Figure 5. Mean values and standard deviations of the limb symmetry index of MVIC of knee extensor muscles at 30° (Ext 30°) and 90° (Ext 90°), and knee flexor muscles at 90° (Flex 90°) and 60° (Flex 60°), at T3, T4 and T5. * p < 0.05, ** p < 0.01.