Figure 2. iEMG slopes ( M ± SD) across trials. Repeated measures ANOVAs showed that for iEMG normalized to MVC (F_2,40 = 0.71, p=0.49), the mean (F_2,40 = 1.08, p=0.35), and the y-intercept (F_2,40 = 1.0, p=0.37), there were no systematic differences across trials.