Fig. 5
From: Morphological examination of pelvic floor muscles in a rat model of vaginal delivery
Ratio of Type I, IIa, and IIb fibers in the Icm and representative ATPase (pH 10.2) staining of the CSA of the Pcm from the sham, 1 W, 2 W, and 4 W groups. The ratio of Type I was significantly lower in the 2 and 4 W groups versus the sham group (p < 0.01). Ratios of Type IIa and IIb did not differ significantly between the four groups. ATPase (pH 10.2)-stained cross section of the rat Pcm: the sham group (A), 1 W group (B), 2 W group (C), and 4 W group (D). CSA, cross-sectional area; ATPase, myosin adenosine triphosphatase; Icm, iliococcygeus muscle; sham group, sham-operated group; 1 W group, 1 week after vaginal distention; 2 W group, 2 weeks after vaginal distention; 4 W group, 4 weeks after vaginal distention. Values are the mean. Statistical analysis ANOVA, Steel–Dwass multiple comparison test. **Indicates a statistically significant difference (p < 0.01 versus the sham group). Scale bar = 100 μm