Comparison of 7-site and 3-site Skinfold Assessments
7 Site Procedure
Skinfold procedures use measurements of subcutaneous fat from different parts of the body to estimate overall body fatness. A larger number of sites theoretically provides the best estimate but requires more time so balance is needed between accuracy and convenience.
The Jackson and Pollock (1978), 7-site procedure was one of the more popular assessments, but the simpler 3-site procedure has been found to be almost as accurate for most people. Note that the sites differ for males and females to account for differences in body fat distribution.