Click on image to view larger version.

Figure 2 Forearm blood flow (FBF) response to three doses of (A) acetylcholine (ACh) and (B) sodium nitroprusside (SNP) following eight weeks of inactivity (open circle) or eight weeks of exercise training (closed square) (n = 16). Forearm blood flow is expressed as the percentage change in the ratio of infusion arm to noninfusion arm flows relative to the baseline period preceding the administration of ACh. Values are means ± SE. Vasodilation to ACh was significantly increased by exercise training (p < 0.05, two-way analysis of variance). The difference in response to SNP was not significant (p = 0.6, ANOVA).