Dietary vitamin E prophylaxis restores H-reflex depression at 7 dpi at 5 Hz. Increased amplitudes on the y axis at 5 Hz indicate less H-reflex rate depression, whereas decreased amplitudes indicate more rate depression. The H-reflex depression after increased frequency (i.e., 5 Hz) was abnormal in rats on a control diet after SCI but it was restored in rats on dietary vitamin E prophylaxis after SCI at 7 dpi (A). Higher percent changes from 0.1 Hz at 5 Hz indicate abnormal H-reflex rate depression after SCI in rats on a control diet but not in rats on dietary vitamin E prophylaxis at 7 dpi where there was a lower percent change from .1 Hz (B). (** p < 0.01 CTL SHAM vs. CTL INJ and CTL INJ vs. VIT E INJ and * p < 0.05 VIT E SHAM vs. CTL INJ; CTL SHAM n = 6, CTL INJ n = 6, VIT E SHAM n = 6, VIT E INJ n = 7)