To compare the estimation of body fat between bioelectrical impedance analysis bia and dual energy x ray absorptiometry dexa in overweight african american female adolescents. Bioelectrical impedance bia bia is one of the quickest and easiest methods for predicting body fat.
Body Fat Testing Through Bioelectrical Impedance Bia
Body fat measurement bia. In total 54. Skinfold measurements have been used to estimate body fat for over 50 years skinfold calipers measure the thickness of your subcutaneous fat the fat underneath the skin at certain body. Body fat scales provide a rough estimate of a persons bfp. However the convienience of this method comes at a price of accuracy. The amount of essential fat differs between men and women and is typically around 2 5 in men and 10 13 in women. In part 2 you learned about underwater weighing and in part 3 you learned about the bod pod.
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. A 2016 study found that the bia method of measuring body composition is accurate when using. According to willett and co workers 2006 bia or bioelectrical impedance analysis involves passing a weak current across the extremities hands and feet to measure body composition. However they are not very accurate. So for example a man who is 42 years old and weighs 185lbs would have 26 body fat if his skin measurement from his thigh was 31mm chest 30mm and abs 24mm. Now lets talk about bia.
Body fat includes essential body fat and storage body fat. It is necessary fat that maintains life and reproductive functions. In part 1 of this series you learned about how body fat testing is a prediction not a measurement. Another way to calculate the percentage of fat mass in your body is to use bioelectric impedance analysis bia. Bioelectrical impedance analysis bia is a commonly used method for estimating body composition in particular body fat and muscle massin bia a weak electric current flow through the body and the voltage is measured in order to calculate impedance resistance of the body. In a group of men using strength training to lose weight changes in body fat measured by underwater weighing and bia agreed reasonably well.
Most body water is stored in muscle. But in those who lost weight using cardiovascular exercise bia underestimated fat loss and overestimated the loss of fat free mass. Essential body fat is a base level of fat that is found in most parts of the body.
Gallery of Body Fat Measurement Bia
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