Question

Which of the following is not a method of calculating percentage of body fat? A.Bioelectrical impedence B.Body mass index C.Skinfold measures D.Underwater weighing

Answer 1

Body mass index is the actual measurement of body fat, not a method with which to measuring it.

Answer 2

Body mass index is the correct answer.

C. It might not be St. Patrick’s Day, but get ready to be pinched! Perhaps the most accessible method for measuring body composition, a skin fold assessment can be done using either three, four or seven sites (meaning parts of the body). The technician pinches the skin and then uses the skin caliper device to measure the thickness of the skin fold for each site.Each protocol has specific sites for testing spread across the body commonly including the chest, arm, abdominals and thigh. Then, after plugging the numbers into a formula, practitioners can estimate body composition.

Although the name might sound a bit intimidating, bioelectrical impedance is far removed from shock therapy. In fact, users won’t even feel a thing. A. Bioelectrical impedance scales range from the simple (a normal scale with electrodes under each foot) to the complex (a scale that has handholds with additional electrodes). Regardless of the machine, the devices work by sending tiny electrical impulses through the body and measuring how quickly those impulses return. Since lean tissue conducts electrical impulses quicker than fatty tissue, a faster response time is correlated with a leaner physique.

D. If the thought of getting dunked underwater suits your fancy, this might be the method for you. Hydrostatic weighing, commonly referred to as underwater weighing, compares a subject’s normal bodyweight (outside the water) to their bodyweight while completely submerged. Using these two numbers and the density of the water, operators can accurately nail down the subject’s density. This number is then used to estimate body composition.