Body weight and blood pressure. Panel A shows time-course of changes in body weight while panel B shows blood pressure of lean Zucker rats (LZR), untreated obese Zucker rats (OZR) and OZR treated with diets containing 5 and 10 mg/kg of chromium as Cr(pic)3 (i.e., OZR; 5 Cr and OZR; 10 Cr, respectively). The treatments were initiated at 6 weeks of age (i.e., time 0). Data are means ± SEM of 9-10 animals/group. * p < 0.05 compared to the other groups at the same time point.