method of body composition analysis based on electrical conductance and the greater electrical conductivity of fat-free mass.
This is a rapid and noninvasive method used to evaluate body fat. A low-level electrical current is passed through the body, and the impedance, or opposition to the flow of the current, is measured with a BIA. Because fat tissue has less water to conduct an electrical current, the more body fat a person has, the more resistance there will be to the current. Although sources of error include technician's skill, environmental factors, subject factors, and the equation used, BIA has about a three- to four-percent margin of error.
A test for measuring various bodily characteristics, including body fat and body cell mass.
measures total body water by sending a harmless amount of an electric current through the body. Mathematical equations translate the percent body water measure into an indirect estimate of body fat and lean body mass.
A body composition test that works by sending a small electrical signal through the body, enabling the amount of fat, muscle and other lean tissue to be measured.
a method to calculate percentage of body fat by measuring electrical resistance due to the water content of the body.
(BIA) (im-PEE-dance) A way to estimate the amount of body weight that is fat and nonfat. Nonfat weight comes from bone, muscle, body water, organs, and other body tissues. BIA works by measuring how difficult it is for a harmless electrical current to move through the body. The more fat a person has, the harder it is for electricity to flow through the body. The less fat a person has, the easier it is for electricity to flow through the body. By measuring the flow of electricity, one can estimate body fat percent.
Bioelectrical impedance analysis (BIA) is a commonly used process for estimating body composition. It has come into favor in recent years due to its role in estimating body fat. BIA actually determines the electrical impedance of body tissues, which provides an estimate of total body water (TBW).