Body fat % Calculation Last Post 26 Apr 2013 08:22 AM by Tech Support. 4 Replies.
 Author Messages
Robert

New Member
Posts:38

 12 Dec 2011 08:50 AM my wife checked her body fat % using the zone calculator, it came up with 18% body fat. When we used 4 other type formulas we came up with 33%, 30.4%, 28.3% and 26.9%. we used the Deurenberg 1&2 formula, the Gallagher formula, and the Jackson Pollock formula. Deurenberg formula 1 (1.20 x BMI) + (0.23 x Age) - (10.8 x Gender) - 5.4 her results 33.0% Deurenberg formula 2 (1.29 x BMI) + (0.2 x Age) - (11.3 x Gender) - 8 her results 30.4% Gallagher formula (1.46 x BMI) + (0.14 x Age) - (11.6 x Gender) - 10 her results 28.3% Jackson Pollock formula (1.61 x BMI) + (0.13 x Age) - (12.2 x Gender) - 13.9 her results 26.9% Gender 1 for male 0 for female I have 3 questions, why the difference between the zone and the others? What is the Zone formula? Which one is the correct formula Bob
Tech Support

Posts:735

 13 Dec 2011 03:06 PM As you have experienced there are numerous formulas to determine % body fat and all offer varying results. Methods such as hydrostatic weighing and DEXA scanning are the accepted and most accurate methods. "The Zone" Appendix B; tables used to determine body fat percentage were based on Dr. Michael Eades book, "Thin So Fast." The table is based on a formula, not observation. You may find Dr. Eades bibliography to Chapter 4 to be of interest. He cites the work of Penrose, K.W.et. al."generalized body composition prediction equation for men using simple measurement techniques" Medicine and Science in Sports and Exercise" 17, no. 2 (1985) Also the work of Fisher, A. Garth, "The Complete Book of Physical Fitness" Salt Lake City; Brigham University Press, 1979 We hope you find this helpful.
jaffney

New Member
Posts:1

 15 Apr 2013 08:50 AM Can you please provide the actual formula that the zone website uses to calculate body fat percentage?
austine

New Member
Posts:2

 26 Apr 2013 04:01 AM [quote] Posted By jaffney on 15 Apr 2013 09:50 AM Can you please provide the actual formula that the zone website uses to calculate body fat percentage? [/quote] hai jaffney ! When you calculate body fat percentage you want to know about body fat chart . Classification Women Men Essential Fat 10-12% 2-4% Athletes 14-20% 6-13% Fitness 21-24% 14-17% Acceptable 25-31% 18-25% Obese 32% plus 25% plus .
Tech Support