Body Composition Unit4

Question 0

Fat free mass

Answer 0

Lipid free chemicals

Water bone muscle connective tissue organs

Question 1

Fat mass

Answer 1

Absolute amount of body fat

Includes extract able lipids

Question 2

Relative body fat percentage

Answer 2

FM expressed as a percentage of total body mass

Question 3

Adipose tissue

Answer 3

Adipose tissue is specialized for storage through triglycerides

Question 4

2 types of fat cells

Answer 4

White-most fat stored in nuclei are flat

Brown-small fat droplets better for generating heat tribal role in weight maintenance

Question 5

Adipocytes

Answer 5

Once fat cells are created they cannot be naturally removed
Size only decreases
Increase in size= hypertrophy
Increase in number= hyperplasia

Question 6

Body fat regulation

Answer 6

Sex hormones
Local factors
Genetics

Question 7

Fat cells

Answer 7

Flows in and out of cells in the form of molecules called fatty acids
Store fat in triglycerides
Glycerol+3fatty acids= triglycerides

Question 8

Lipogenesis

Answer 8

Is the deposition of fat
Converted to triglycerides
Insulin plays a huge role in liopgenic process
Stimulates lipoprotein release

Question 9

Lipolysis

Answer 9

The chemical decomposition and release of fat from adipose tissue
When additional energy is required

Question 10

HSL

Answer 10

Hormone sensitive lipase

Hydrolysis the triglyceride into free fatty acids and glycerol

Question 11

Essential fat

Answer 11

Fat in heart kidneys lungs liver bone marrow muscles
Men 3%
Women12%

Question 12

Storage Fat

Answer 12

Fat accumulation in adipose tissue
12-15%
Total fat=storage+essential

Question 13

Location of adipose tissue

Answer 13

Subcutaneous adipose tissue-beneath the skin

Visceral adipose tissue- internal

Question 14

Direct assessment of body composition

Answer 14

Involves chemical analysis of the body

Human cadaver

Question 15

Body mass index

Answer 15

Body mass divided by height squared

Question 16

Anthropometry

Answer 16

Standard techniques to quantify or predict body size

Limb circumferences height and weight

Question 17

Body density

Answer 17

Body mass per unit of body volume

Question 18

Densitometry

Answer 18

Water displacement to estimate body density

Question 19

BMI

Answer 19

Still does not account for % body fat

Lean muscular can be labeled as overweight

Question 20

BMI classifications for adults

Answer 20

Underweight 30
Class1=30-34.9
Class2=35-39.9
Class3>40

Question 21

Android

Answer 21

Male
Upper body, neck, abdominal 
Internal
Hard fat
Apple

Question 22

Gynoid

Answer 22

Female
Lower body, thighs, butt
Subcutaneous 
Soft fat
Pear

Question 23

Android vs gynoid

Answer 23

Android = greater risk for cardiovascular disease compared to gynoid

Question 24

Underwater weighing

Answer 24

The gold standard

Question 25

DEXA

Answer 25

Easiest one

Question 26

Air displacement plethysmograph

ADP

Answer 26

Bod pod
Uses air displacement
Mass determined by stepping on scale
Error +-3

Question 27

Skin fold thickness

Answer 27

Ski fold thickness is measured in millimeters with precision CALIPERS
Skin fold is primarily determined by subcutaneous fat layer

Question 28

Bio electrical Impedance Analysis

BIA

Answer 28

BIA is an easily administer technique that determines TOTAL BODY WATER

Question 29

BIA

Answer 29

Lean mass and BF% can then be estimated via prediction equations

Assumes body is a cylinder of constant cross sectional area and uniform density

Question 30

Practical Applications

Answer 30

There is perfect method to assess body composition