<P> Once body density has been calculated from the data obtained by hydrostatic / underwater weighing, body composition can be estimated . The most commonly used equations for estimating the percent of body fat from density are those of Siri and Brozek et al.: </P> <P> Siri (1956): Fat% = (4.950 / Density - 4.500) × 100 </P> <P> Brozek et al. (1963): Fat% = (4.570 / Density - 4.142) × 100 </P>

Do two individuals with the same body volume displace equal amounts of water in a hydrostatic scale