Body Composition

Question 1

hydrostatic weighing

Answer 1

immersing the person in water and measuring the amount of water that becomes displaced
this method is used for laboratory procedures to determine bone density

Question 2

Plethysmography

Answer 2

calculates the density of the body utilizing the amount of air displacement during testing within a specialized closed chamber.

The change in pressure with in the chamber is measured and converted to the percentage of body fat using a standard equation.

Question 3

Skinfold measurements

Answer 3

method determines the overall percentage od the body fat through the measurement of nine standardized sites.

Correlation relies on the theory that the amount of subcutaneous fat is proportional to the total fat in the body.

Question 4

bioelectrical impedance analysis

Answer 4

method of assessing the body composition using small electrical currents and measures the resistance or opposition to the current flow.

This techniques is based on the principle that resistance to electrical current is inversely related to the composition of water within the body.

Question 5

body mass index

Answer 5

body mass index estimates an individuals body fat percentage and weight related health risks based on a calculation using hight and weight measurements

Question 6

normative value for body fat percentage for males

Answer 6

12-18%

Question 7

normative value for body fat percentage for females

Answer 7

18-23%

Question 8

what is the BMI classification for <18.5

Answer 8

underweight

Question 9

what is the BMI classification for 18.5-24.9

Answer 9

normal

Question 10

what is the BMI classification for 25.0-29.9

Answer 10

overweight

Question 11

what is the BMI classification for 30.0-34.9

Answer 11

obesity (class 1)

Question 12

what is the BMI classification for 35.0-39.9

Answer 12

obesity (class 2)

Question 13

what is the BMI classification for >40

Answer 13

extreme obesity (class 3)