Figure 2. Simulated muscle activity and measured EMG curves and the magnitude and timing correlations between simulated muscle activations and EMG. Simulated muscle activations and measured EMG curves during a full running cycle for the vastus lateralis, vastus medialis, rectus femoris, soleus, and biceps femoris long head muscles under conditions without (A) and with (B) infrapatellar straps. (C) Magnitude correlation between simulated muscle activations and EMG. (D) Timing correlation between peak simulated activations and peak EMG.