Figure 1.

Peak GH and cIMT. A, Peak stimulated GH is negatively associated with cIMT on univariate analysis. Men are depicted with open diamonds, whereas women are depicted with closed squares. B, Relative GHD was determined by peak stimulated GH of 4.2 μg/liter or less on standard GHRH-arginine stimulation test. cIMT is significantly different across groups by overall ANOVA (P = 0.01). Between-group comparisons with Tukey-Kramer post hoc tests show that cIMT is similar between normal-weight and obese GHS subjects (P = NS) but significantly different between normal-weight and obese subjects with relative GHD (P < 0.05).