Effect of gender on training-induced vascular remodeling in SHR. S.L. Amaral and L.C. Michelini. Braz J Med Biol Res 2011; 44: 814-826.

Figure 3. Effects of hypertension and training on resting values of mean arterial pressure and on arteriolar wall-to-lumen ratio in different tissues of sedentary (S) and trained (T) normotensive (WKY) and spontaneously hypertensive (SHR) female rats. Mean values correspond to 20-30 arterioles in the myocardium and kidney and 5-15 arterioles in the skeletal muscles taken from 4-8 rats per group. *P < 0.05 vs WKY (two-factor ANOVA). Right panels, Photomicrographs taken from transverse sections of gastrocnemius muscle arterioles of sedentary (s, upper micrograph) and trained (t, lower micrograph) SHR. Arrows indicate wall thickness; bar = 25 mm. Adapted from Ref. 26, with permission.