Fat and fat-free mass index references in children and young adults: assessments along racial and ethnic lines

Fat-free mass index (FFMI) and fat mass index (FMI) are superior to BMI and fat percentage in evaluating nutritional status. However, existing references fail to account for racial/ethnic differences in body composition among children.Our goal was to produce age-based normative references for FFMI and FMI in children for specific racial/ethnic groups.Body composition, weight, and height were measured in 1122 normal healthy children aged 2-21 y....