Lecture 12

Question 1

what is DIT / TEF

Answer 1

diet induced thermogenesis

Question 2

what is the thermic effect of feeding, and what proportion of daily energy expenditure does it account for

Answer 2

food intake, cold stress, thermogenic drugs

10%

Question 3

what is the thermic effect of physical activity depend on, and what proportion of daily energy expenditure does it account for

Answer 3

duration and intensity

15-30%

Question 4

what is resting metabolic rate (3) and what does it depend on

Answer 4

• sleeping metabolism
• basal metabolism
• arousal metabolism

fat free mass, gender, thyroid hormones, protein turnover

Question 5

what proportion of daily energy expenditure does resting metabolic rate account for

Answer 5

60-75%

Question 6

what uses more energy to maintain itself, fat or muscle ?

Answer 6

muscle uses more energy just to maintain itself

Question 7

what is 1 MET

Answer 7

the energy expenditure of an individual at rest,

which is usually equivalent to ~3.5mL/kg/min

Question 8

why is average daily energy expenditure lower in females

Answer 8

less fat free mass

Question 9

what does leptin do and where is it produced

Answer 9

produced in adipose tissue (relative to amount)

is an appetite depressant

Question 10

what is grehlin and where is it produced

Answer 10

an appetite stimulant

• produced in the stomach, pancreas

Question 11

what does grehlin counteract

Answer 11

counteracts leptin

Question 12

what other roles does grehlin have apart from appetite and what is it secreted with

Answer 12

brain function, learning, secreted with growth hormone

Question 13

does the length of exercise effect your excess post exercise oxygen consumption

Answer 13

yes the longer you have been exercising, the greater the EPOC