Lecture 6

Question 1

Out of the following activities, which is most important for maintaining a normal blood pressure?
-Not smoking
-Not drinking alcohol
-150+ minutes of physical activity
-Healthy body weight
-Healthy diet

Answer 1

Maintaining a healthy body weight was shown to be most important for keeping a normal blood pressure than the other 4 behaviours

Question 2

How do obesity drugs like Ozempic work?

Answer 2

They mimic GLP-1 agonists, which decrease the rate of gastric emptying. This increases satiety levels

Question 3

Male vs Female essential fat %

Answer 3

Male: 3%
Female: 13%

Question 4

Hydrostatic weighing mechanism

Answer 4

Fat is less dense than water, where fat-free mass is more dense than water
-The amount of water displaced while underwater represents the individual’s fat-free mass

Question 5

What is a Bod Pod?

Answer 5

Sealed pod that weighs the individual and measures the air displacement caused by the individual in order to measures their body density and body fat %

Question 6

Bioelectric Impedance Analysis (BIA)

Answer 6

Electrical current run through individual
-Resistance (impedance) in fat tissue
-Impedance value converted to body fat %

Question 7

Errors with BIA

Answer 7

Increased skin temp lowers impedance by
2.2% per degree (C)