What is bioelectrical impedance How does it work?

BIA measures the rate at which a painless low-level electrical current travels through your body. Based on that rate, a calculation is used to estimate fat-free mass. The device then uses other data such as your height, your gender, and weight measurements to determine your body fat percent.

How is bioimpedance measured?

Measurement of bioimpedance is obtained from the whole body and body segments separately, using single frequency, multiple frequencies and bioimpedance spectroscopy analysis. In addition to several alternative assessments method such as bioimpedance vector analysis and real time bioimpedance analysis.

What is a healthy bioelectrical impedance?

Fatty tissue creates “resistance” to the flow of electrical current, and this resistance is what produces the BIA measurement. A healthy body fat range is 15 to 25 percent of the body for women and 10 to 20 percent of the body for men.

What is bioelectrical impedance and how is it able to estimate your body fat percentage?

It is based on the difference in resistance when an electrical current is conducted through fat or lean components of the body. It can estimate whole-body fat content based on the determination of total body water content. An impedancemetry-specific equation for determining obesity has been developed [50,51].

Is BIA scale accurate?

Accuracy: Accuracy varies, with an error rate that ranges from 3.8–5\% body fat but may be higher or lower depending on the device used (3, 13 ). Instructional videos: Here are examples of inexpensive BIA devices with hand electrodes, foot electrodes and hand and foot electrodes.

Can BIA measure muscle mass?

In general, these studies found BIA to be a valid method for estimating lean body mass. In this study, we demonstrate that BIA is also an effective method for estimating SM mass.

Is bioelectrical impedance accurate?

BIA is considered reasonably accurate for measuring groups, of limited accuracy for tracking body composition in an individual over a period of time, but is not considered sufficiently precise for recording of single measurements of individuals.

What is bioimpedance used for?

Bioimpedance measurements allow for the characterization of biological media and organic tissues and have been used for detection of edema, diagnosis of skin-related diseases, detection of cancerous tissues, and monitoring of ischemia during the transplant process and even as a noninvasive and nonobstructive estimation …

What are the pros and cons of BIA?

In simple terms, the less the impedance to the electrical current, the greater the lean muscle mass, and vice versa.

• Pros: BIA is easy to measure and can be done fully clothed.
• Cons: One of the assumptions of a valid BIA assessment is that the body is adequately and consistently hydrated.

Is BIA technology accurate?

What is a good BIA score?

What is defined as normal for the proportional body cell mass in lean body mass are values in the range of 53 – 59\% for men in the age group of 18 – 75 years, and 50 – 56\% for women. These are optimal figures for BCM in the lean body mass.

Do BIA scales work?

However, they are not very accurate. A 2016 study found that the BIA method of measuring body composition is accurate when using standard, published mathematical formulas. However, the body fat scale that the researchers tested did not use accurate formulas to estimate BFP. Therefore, it produced inaccurate estimates.

How does bioelectric impedance analysis work?

Bioelectrical impedance analysis (BIA) is a method for measuring body composition based on the rate at which an electrical current travels through the body . Body fat (adipose tissue) causes greater resistance (impedance) than fat-free mass and slows the rate at which the current travels.

What is the BIA scale?

Body composition scales are sophisticated devices that use Bioelectrical Impedance Analysis (BIA) to analyze the body composition of a person. As complicated as it may sound, using these devices is surprisingly as easy as stepping onto the scale and taking the readings.

What is base impedance?

Once the base power and the base voltage are chosen, the base current and the base impedance are determined by the natural laws of electrical circuits. The base value should only be a magnitude, while the per-unit value is a phasor.

What is biological impedance analysis?

Biological Impedance Analysis is a method of assessing your “body composition” – the measurement of body fat in relation to lean body mass.