Quiz 7 Exercise Testing And Prescription

The two-component model of body composition assessment assumes a fat-free body density of

1.10 g·cc-1

Although body fat standards vary slightly with age and activity level, which of the following ranges best represents a recommended healthy body fat percentage for adult women?

18% to 28%

A waist-to-height ratio of _____ indicates an increased health risk for both men and women of various ethnic groups.

>50

The Bod Pod relies on

Boyle's law

A BMI of 30 is equivalent to 30% body fat.

False

The larger the fat-free mass, the greater the resistance to the electrical current from BIA.

False

The recommended procedure for skinfold measurements is to let go of the fold once the jaws of the caliper are placed on the skin.

False

Which measurements or estimations are necessary for the calculation of body volume using the air displacement plethysmography method? I. residual lung volume II. thoracic gas volume III. body surface area

II and III

Which of the following is not true of dual-energy X-ray absorptiometry?

It is the preferred method for estimating total body water.

The taller the client, the greater the impedance to the flow of an electrical current through the body.

True

Which of the following is least likely to result in a measurement error when using the bioelectrical impedance method to monitor changes in body composition over a period of 6 months?

a different technician for the pre- and post measurements

Which of the following methods of body composition assessment is not considered a reference method?

bioelectrical impedance analysis (BIA)

Most skinfold prediction equations provide an estimate of

body density

Body density is defined as

body mass / body volume

Excluding all other measurements (e.g., dry weight) and conversion formulas, what is determined from the underwater weighing procedure?

body volume

Estimating body fat percentage from hydrodensitometry is an example of what model of body composition assessment?

two-component

Which of the following variables is not likely to affect the underwater weighing procedure?

whether or not the client uses a nose clip during the procedure