Week 6

Question 1

Obesity kills more people than…

Answer 1

1. Underweight
2. Malnutrition

Question 2

BMI

Answer 2

assess body weight

Question 3

BMI Formula

Answer 3

weight (kg) / height (m^2)

Question 4

Hydrostatic Weighing

what is it, how does it measure and disadvantages

Answer 4

• criterion method for body comp
• measure weight difference between air and water
• expensive, timely and uncomfortable

Question 5

Skinfolds advantages

Answer 5

• quick, non-invasive and inexpensive

Question 6

Skinfolds Disadvantages

Answer 6

• cannot predict overall % of body fat
• hard to take skinfolds from obese
• subcutaneous fat does not correlate well with total body fat (fat around intestines)

Question 7

WHR Values

Answer 7

Men = 0.95
Women = 0.8

Question 8

Increased risk associated with waist girth in men

Answer 8

• asthersclerosis
• insulin resistance
• glucose intolerance
  type 2 diabetes
• lipid profile abnormalities
• coloerectal cancer

Question 9

Bioelectrical impedance

what is it (3 points)

Answer 9

weak electrical signal through body
- body fat % from electrical resistance
- relies on fluid levels

Question 10

DEXA

what is it, what does it do and disadvantage

Answer 10

low does radiations
- safe to use
measure regional levels of bone mineral, fat and lean mass
- very expensive

Question 11

Microscopic Banding

Answer 11

• sleeve placed at pyloric sphincter controlling gastric emptying
• sleeve gastrectomy

Question 12

Incretin

Answer 12

• class of hormones in energy balance control
• glucagon like peptide (GLP-1)
• glucose dependant insulinotropic polypeptide (GIP)

Question 13

Ozempic

Answer 13

one class of incretin (GLP-1 agonist) stimulating same receptors

Question 14

Tirzepatide

Answer 14

dual cretin (stimulate GLP-1 and GIP receptor hormones)

Question 15

GIP

Answer 15

• decrease food intake
• increase insulin/glucagon

Question 16

GLP-1

Answer 16

• make you feel full longer
• increase satiety
• increase insulin
• decrease gastric emptying and food intake

Question 17

effect of tirzepatide

Answer 17

• 7% fat loss / 17kg decrease absolute change
• 7% LBM gain / 6kg decrease absolute change

increase fat mass loss and less fat free mass lost with drop in some skeletal muscle mass and drop in fat mass

Question 18

intramuscular fat depots

Answer 18

fat around skeletal muscle themselves

Question 19

Incretin and Resistance Exercise

Answer 19

lower change in body weight and increased lean mass (more fat mass lost)

Question 20

BMI underweight

Answer 20

less than 18.5

Question 21

BMI normal weight

Answer 21

18.5 - 24.9

Question 22

BMI overweight

Answer 22

25 - 29.9

Question 23

BMI obese

Answer 23

30+