Figure 7
From: Physiological models of body composition and human obesity
Plot of the fat fraction as a function of 1/density for Caucasian + Black + Hispanic females ages 18 to 31 (top), 32 to 50 (middle) and 51 to 90 (bottom). The black line is the optimal least square linear fit to the data. The other lines are predictions using the the Siri I (eq. (13), blue), Siri II (eq. (14), red) and Brozek (eq. (15), green) relations.