Skinfold calipers measure the thickness of your subcutaneous fat the fat underneath the skin at certain body locations. The forearm circumferenceis only needed to calculate the body fat of women.
Pdf Design And Development Of Device To Measure Body Fat
Body fat measurement circuit. Divide your fat mass by your body weight and multiply by 100 to calculate percent body fat. In the example 3607 divided by 140 times 100 calculates a percent body fat of 2576 percent. No electrical current is involved. In this article we describe the range of methods include those that a person can try at home. Measurements are taken at either 3 or 7 different sites on the body. By measuring that impedance the device can calculate the percentage of body fat.
The measuring tape you bring around your waist should sit tightly but it shouldnt dig into your skin. There are various ways to measure the percentage of body fat and some are more high tech than others. Use a tape measure to determine your waist wrist hip and forearm circumference. Then input your gender and measurements below to receive a body fat index based on average values. Lm weight fm bmi method. Using body fat calipers.
The bmi numbers are way too general to be really useful says tammy callahan marketing manager of life measurement inc which. Hydrostatic weighing and other high tech machines are expensive and almost impossible for a layperson to access. But others feel that body fat percentage is really the way to go. The body fat index is not an indicator of fitness level since the calculation is made with no regard to height or weight. Dont pull your stomach in either. Another method for calculating an estimate of body fat percentage uses bmi.
Fat mass fm formula. For example if your waist is 30 your hips are. Put your tape around the thickest part of your forearm close to your elbow. For more accurate measurements of body fat the use of instruments such as bioelectric impedance analysis or hydrostatic density testing is necessary. Calipers are a pinch an inch way to measure body fat. To calculate body fat percentage add your waist and hip measurements and then subtract the neck measurement to determine your circumference value.
There are also hand held devices and scales which measure body fat but these are often inaccurate. Fm bf weight lean mass lm formula. For our purposes the easiest and most accurate choice is the caliper method. The amount of water found in body tissues impedes or obstructs the electrical current to a different extent depending on whether the tissue is fat muscle or bone.
Gallery of Body Fat Measurement Circuit
