Estimating fat-free mass in elite-level male rowers: a four-compartment model validation of laboratory and field methods.

Unlabelled: The purpose of this study was to investigate the accuracy of fat-free mass (FFM) estimates from two-compartment (2C) models including air displacement plethysmography (ADP), ultrasound (US), near-infrared interactance (NIR), and the Jackson and Pollock skinfold equation (SKF) against a criterion four-compartment (4C) model in elite male rowers.

Methods: Twenty-three elite-level male rowers (mean± SD; age 24.6 ± 2.