Bioelectrical Impedance Analysis For Body Fat Measurement

It is based on the difference in resistance when an electrical current is conducted through fat or lean components of the body.

Bioelectrical impedance analysis for body fat measurement. A non federal nonadvocate 13 member panel representing the fields of nutrition pediatrics surgery public health biomedical engineering epidemiology and biostatistics. Quantities of fat mass and fat free mass by running a small electrical current through the body. The current study aimed to compare the estimates of body fat percentage bf by performing bioelectrical impedance analysis bia and dual energy x ray absorptiometry dxa in a sample of obese or overweight chinese adults who participated in a weight loss randomized control trial stratified by gender to determine whether or not bia is a valid measurement tool. Bia or bioelectrical impedance analysis is a non invasive measurement of body fat lean muscle mass and hydration.

To provide physicians with a responsible assessment of bioelectrical impedance analysis bia technology for body composition measurement. Bioelectrical impedance analysis bia is able to make an estimation of body composition eg. Bioelectrical impedance analysis bia is a safe and cost efficient method that avoids exposure to radiation and is used to measure body composition 49. A number of methods are available for determining body fat percentage such as measurement with calipers or through the use of bioelectrical impedance analysis.

Bioelectrical impedance analysis bia is a method for measuring body composition based on the rate at which an electrical current travels through the body. Most body water is stored in muscle. The body fat percentage is a measure of fitness level since it is the only body measurement which directly calculates a persons relative body composition without regard to height or weight. A small current is used to measure the resistance at difference frequencies against the various tissues in the body eg fatlipid has a high resistance to the flow of current therefore shows a high impedance reading.

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Body fat adipose tissue causes greater resistance impedance than fat free mass and slows the rate at which the current travels.

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