Figure 2: Fatigue index (expressed as a percentage of the initial tension) after the implementation of a low-frequency fatigue protocol (stimulation at 4 Hz for 5 min) of the soleus muscle in situ in the placebo-treated (dashed line and ○) and vitamin E-treated (solid line and ●) rats (mean and SD, per group). *Significantly different from pre exercise values within the same group ( ). #Significantly different between placebo and vitamin E at the same time point ( ).