The goal is to obtain the measurement of perimeter of the body part with the tape in contact with but not depressing the skin. There are formula from the us department of defense to compute body fat percentage using girth measurements and height.

Body Composition Testing Science For Sport
Girth measurement body composition. If a plastic or cloth tape is used it should be checked regularly against a metal tape as others may stretch over time. Fraction of an inchcm. Waist girth greater than 102 cm men and greater than 88 cm women waist to hip ratio greater than 095 men and greater than 086 women waist to hip ratio. Girth measurements can be used in determining body size and composition and to monitor changes in these parameters. Girth measurements are determined to the closest line marking ie. As a general risk factor there are girth measurements that are used as a guideline to show an increased risk of heart disease.
Mcardle 2nd ed 1983. Equations derived from nutrition weight control and exercise f. There are different formula for males and females. Measuring body fatpercentage is an easy method of discovering correct body weight and composition. Beneath the skin is a layer of subcutaneous fat and the percentage of total body fat can be measured by taking the girth measurements at selected points on the body with a measuring tape. A quick google search will reveal a number of different ways to measure body mass and composition.
The girths are measured with the tape perpendicular 90 degrees to the length of the bone or body segment. Flexible metal tape measure and pen for marking the skin. Body fat buttock circumference x 105 abdominal circumference x 090 forearm circumference x 300 190 the individual participates in more than 240 minutes of vigorous activity per week for information on proper technique and procedures for taking girth measurements click here. The females require girths of the neck waist and hip. Predicting body fat from girth. The males require girth measures of the neck and abdominal girth.
This measurement includes all of the elements of your body bones blood organs muscles and fat. At any rate these 9 indicators are some of the most important factors to consider. Weight is an overall measure of your body mass.