The first aim of this study was to determine the effect of the RRP on body weight, body fat percentage, lean and fat mass, BMI, and waist circumference. At the completion of phase I, significant reductions were seen in most anthropometric measures, including body weight (P<.001), body fat percentage (P<.001), fat mass (P<.001), BMI (P<.001), and waist circumference (P<.001). Lean mass did not significantly change (P>.99). Similarly, at the end of phase II, participants demonstrated significant reductions in body weight (P<.001), body fat percentage (P<.001), fat mass (P<.001), BMI (P<.001), and waist circumference (P < .001). As during phase I, lean mass did not significantly change (P=.111). No further significant reductions were observed after phase II, but the changes observed initially in body composition parameters were robust enough to persist after 1 year of program participation. Also, no anthropometric measures significantly changed from 100 days to 1 year (P>.05).