Body mass index at 11 years and bone mass at age 18: Path analysis within the 1993 Pelotas (Brazil) birth cohort study

We investigated whether Body Mass Index (BMI) at 11 years old has a direct effect on bone mass at age 18 operating through alterations to bone growth and development, or whether the association is mediated by concurrent BMI, fat mass (FM), and fat free mass (FFM).