Peterson et al used the tri-ponderal index to assess adiposity in patients. It performs better than body mass index in adolescents. The authors are from the University of Alabama, Louisiana State University, Montclair State University, United States Military Academy, Albert Einstein College of Medicine and Verona University.
The TMI bears some relation to the Fetal and Neonatal ponderal indices.
Parameters:
(1) body weight in kilograms
(2) body height in meters
tri-ponderal mass index =
= (weight) / ((height)^3)
In Figure 4 the following equations are given but the results to not match the curves displayed.
percent body fat for men and boys =
= (-0.064 * ((TMI)^2)) + (4.226 * (TMI)) + 18.472
percent body fat for women and girls =
= (-0.056 * ((TMI)^2)) + (3.724 * (TMI)) + 8.06
The equations probably should be:
percent body fat for men and boys =
= (-0.064 * ((TMI)^2)) + (4.226 * (TMI)) - 18.472
percent body fat for women and girls =
= (-0.056 * ((TMI)^2)) + (3.724 * (TMI)) - 8.06
