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Bioelectrical impedance analysis. Bioelectrical impedance analysis (BIA) is a method for estimating body composition, in particular body fat and muscle mass, where a weak electric current flows through the body, and the voltage is measured in order to calculate impedance (resistance and reactance) of the body. Most body water is stored in muscle.
BRI had similar accuracy in predicting % body fat and % fat volume as existing indices, such as the BMI. [1] As the conventional index associated with obesity research, the BMI has numerous drawbacks, as it is unable to distinguish between muscle and fat, is inaccurate in predicting body fat percentage, and has poor ability to predict the risk ...
Stayhealthy, Inc. is a privately held corporation that creates web-enabled healthcare monitoring products. It was founded in the dot-com era by CEO John Collins, and produces devices that monitor and measure such aspects of one's health like blood pressure, heart rate, body weight, body mass index, body composition, body fat (adipose tissue), visual perception, and calories burned.
In males, mean percentage body fat ranged from 23% at age 16–19 years to 31% at age 60–79 years. In females, mean percentage body fat ranged from 32% at age 8–11 years to 42% at age 60–79 years. But it is important to recognise that women need at least 9% more body fat than men to live a normal healthy life. [ 2 ]
In physical fitness, body composition refers to quantifying the different components (or "compartments") of a human body. [ 1 ] The selection of compartments varies by model but may include fat, bone, water, and muscle. [ 2 ] Two people of the same gender, height, and body weight may have completely different body types as a consequence of ...
Human body weight. A person's waist-to-height ratio – occasionally written WHtR[a] – or called waist-to-stature ratio (WSR), is defined as their waist circumference divided by their height, both measured in the same units. It is used as a predictor of obesity-related cardiovascular disease. The WHtR is a measure of the distribution of body fat.
Hydrostatic weighing, also referred to as underwater weighing, hydrostatic body composition analysis and hydrodensitometry, is a technique for measuring the density of a living person's body. It is a direct application of Archimedes' principle , that an object displaces its own volume of water.
The BAI is calculated as: [2] Hip circumference (Pearson correlation coefficient, R = 0.602) and height (R = −0.524) are strongly correlated with percentage of body fat.. Comparing BAI with "gold standard" dual-energy X-ray absorptiometry (DXA) results, the correlation between DXA-derived percentage of adiposity and the BAI in a target population was R = 0.85, with a concordance of C_b = 0