Body Composition

Question 1

Body composition

Answer 1

the relative percentage of body weight that is comprised of fat and fat-free tissue

Question 2

Health body fat %

Answer 2

Males: 12-18%
Female: 18-23%

Question 3

Densitometry

Answer 3

Hydrostatic weighing: submerge person in water and calculate the displaced water
Plethysmography: measurement of air displacement (pressure)

Question 4

Anthropometry

Answer 4

Skinfold measurement: measurement of skin folds, subcutaneous fat = total body fat

Question 5

Bioelectrical Impedance Analysis (BIA)

Answer 5

electrical currents measure the resistance or opposition to the current flow

Question 6

BMI

Answer 6

• measurement of weight and height and identifies increased risk for mortality/morbidity
• overestimates fat in muscular/athletes
• underestimates fat in older adults/those with muscle loss

Question 7

Underweight BMI

Answer 7

<18.5

Question 8

Normal BMI

Answer 8

18.5-24.9

Question 9

Overweight BMI

Answer 9

25-29.9

Question 10

Obesity (Class 1) BMI

Answer 10

30-34.9

Question 11

Obesity (Class 2) BMI

Answer 11

35-39.9

Question 12

Obesity (Class 3) BMI

Answer 12

> 40

Question 13

Waist Circumference Procedure

Answer 13

• snuggly place tape at level of iliac crest at the end of normal exhalation
• not necessary to measure on those with BMI >35