Body Comp Assessment

Question 1

What does BMI involve?

Answer 1

Height and weight (kg/m^2)
Overweight = 25-29
Obese 30 or more

Question 2

What will girth measurements determine?

Answer 2

Relative fatness for different populations. Good for determining patterns of fat distribution.

Question 3

Fat-free body mass (FFM)

Answer 3

All residual lipid-free chemicals and tissues, including water, muscle, bone, CT, internal organs

Question 4

Lean body mass (LBM)

Answer 4

FFM PLUS essential body fat

Question 5

Relative body fat %

Answer 5

FM expressed as a % of total body mass

Question 6

Why is BMI not really accurate?

Answer 6

It doesn’t account the body composition.

Question 7

In general do women or men have more body fat?

Answer 7

Women

Question 8

Fat helps with…

Answer 8

Nerves and body function

Question 9

How many times more should women have in body fat than men?

Answer 9

4x

Question 10

Skinfolds measured with calipers by

Answer 10

Skin plus subcutaneous fat
Plus in different equations to determine body comp
Potential errors involved

Question 11

What is the gold standard for body composition?

Answer 11

DEXA

Question 12

What does skinfold measures

Answer 12

Skin fold thickness, subcutaneous ad visceral fat to figure out body fat

Question 13

Best way to measure with bioelectrical impedance analysis (BIA)

Answer 13

Laying down with electrodes on hands and feet

Question 14

BIA resistance influences…

Answer 14

More fat more resistance
More lean mass travels less resistance
Hydration status
More water lower body fat
Skin temperature

Question 15

Hydrostatic Weighing computes body volume as the difference between…

Answer 15

Body mass measured in air and
Body weight measured during water submersion

*Body volume equals loss of weight in water

Question 16

What happens when you don’t blow air all the way out and don’t account for it?

Answer 16

Accounts for fat due to the residual volume (RV)

5% error

Question 17

CT uses…

Answer 17

Radiation

Question 18

Bod Pod

Answer 18

Measures body volume and know weight in order to calculate for density

Question 19

Leptin

Answer 19

Crucial hormone in BW regulation
- how much one eats
- how much energy one expends
Ultimately one’s BW

Question 20

What happens when there’s an absence in leptin?

Answer 20

Continual hunger and marked obesity

Question 21

Adipocyte Hypertrophy vs Hyperplasia

Answer 21

Hypertrophy - existing adipocytes enlarge or fill with fat

Hyperplasia - total adipocyte # increases

Question 22

Leptin pathway

Answer 22

Leptin moves from fat cells into bloodstream and signals hypothalamus to reduce or stop the drive to eat

Question 23

The number of adipocyte cells is mainly created during

Answer 23

Childhood