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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.
Professional athletes are featured prominently and are used to test the limits of the human body. In addition, host John Brenkus also participated in cases where an "average Joe" was required. The Lead Engineer throughout the Sport Science series has been Dr. Cynthia Bir, Professor of Biomedical Engineering at Wayne State University in Detroit ...
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
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]
A body fat meter is a tool used to measure the body fat to weight ratio in the human body. Different meters use various methods to determine the ratio. They tend to under-read body fat percentage. In contrast with clinical tools like DXA and underwater weighing, one relatively inexpensive type of body fat meter uses the principle of ...
A wide variety of body composition measurement methods exist. The gold standard measurement technique for the 4-compartment model consists of a weight measurement, body density measurement using hydrostatic weighing or air displacement plethysmography, total body water calculation using isotope dilution analysis, and mineral content measurement by dual-energy X-ray absorptiometry (DEXA). [1]
Weight cutting is the practice of fast weight loss prior to a sporting competition. It most frequently happens in order to qualify for a lower weight class or to meet the maximum weight limit in their weight class if one exists (usually in combat sports or rowing, where weight is a significant advantage) or in sports where it is advantageous to weigh as little as possible (most notably ...
The National Aerobic Championships was a competition of aerobic gymnastics started in 1984 in the United States. Founded by Sports Fitness International, it was the first major championship in the sport predating the Aerobic Gymnastics World Championships by 11 years.