Specific Aim 2: To determine if a multidisciplinary fitness and nutrition program, when compared with a matched, WLC group will show a change in whole body assessment including a decrease in fat mass, an increase in percent lean body mass, and a decrease in percent body fat, as measured utilizing dual-energy X-ray absorptiometry Hypothesis 2a: Compared to baseline and matched controls, children randomized to a 10 week multidisciplinary fitness and nutrition program will show improved whole body assessments including.