Associations of age and body mass index with hydration and density of fat-free mass from 4 to 22 years

Most body composition techniques assume constant properties of fat free mass (FFM) (hydration and density) regardless of nutritional status, which may lead to biased values. To evaluate the interactive associations of age and body mass index (BMI) with hydration and density of FFM. Data from subjects aged between 4 and 22 years old from several studies conducted in London, UK were assessed. Hydration (HFFM) and density (DFFM) of FFM obtained...