Impedance is a measure of the degree a substance resists the flow of electrical current of a given voltage. This gives you a true indicator of your inner health and when monitored over time can show the impact of any fitness regime or weight loss program. Impedance measurements provide a quite accurate picture of electrolyte water contained in tissue. The same goes for ascites because it is not part of the lean body mass. You simply step on the scale and the tool measures both your body weight and your estimated fat percentage. Therefore if a person is more muscular there is a high chance that the person will also have more body water which leads to lower impedance.
Administered solutions however are detected immediately. Impedance is greatest in fat tissue which contains only 10 20 water while fat free mass which contains 70 75 water allows the signal to pass much more easily. Bioelectrical impedance is measured when a very small electrical signal carried by water and fluids is passed through the body. In bia a weak electric current flows through the body and the voltage is measured in order to calculate impedance of the body. Since the advent of the first commercially available devices. They are capable of extracting complex impedance vectors at a single test condition or while sweeping source parameters like frequency amplitude and dc bias.
Such scales work with the help of sensors underneath. However the convienience of this method comes at a price of accuracy. Bia involves running a light electrical current through your body. Body fat scales are easy to use. Most body water is stored in muscle. Bioelectrical impedance analysis is a commonly used method for estimating body composition in particular body fat and muscle mass.
Impedance measurement instruments are employed for development characterization and test of sensors electronic components electrochemical cells and materials. They run a light electrical current through your body measure the degree of resistance or impedance to the flow of the current then use this information to estimate your body fat percentage 2. The symbol zdenotes impedance and is measured in ohms. Fat free mass contains mostly water while fat contains very little water. How accurate are body fat scales. Body fat percentage scales use a method known as bioelectrical impedance bia to estimate your body composition.
In simple terms impedance measures the effective resistance to current flow through the body by applying a small alternating current. Orally ingested water which has not yet been absorbed by the body is not measured. Bioelectrical impedance bia bia is one of the quickest and easiest methods for predicting body fat. Tanita monitors bring you fast accurate body composition results using the latest advanced bio electrical impedance analysis bia technology first developed by tanita in 1992.
Gallery of Impedance Body Measurement
