Tackling Obesity

Question 1

What is the most important aspect of energy expenditure?

Answer 1

BMR

Question 2

In terms of weight loss, what is the difference between diet and exercise?

Answer 2

Dieting is certainly better for quick results, however exercise gives better long-term results.

Question 3

Rank the contribution of the following organs and tissues to BMR in a reference male: liver, brain, heart, kidneys, muscle, adipose, other.

Answer 3

muscle
liver
brain
other
heart
kidneys
adipose

Question 4

What is T3?

Answer 4

Thyroid hormone - elevates metabolic rate

Question 5

What reduces T3 concentration, diet or exercise?

Answer 5

Diet

Question 6

What is referred to as the ‘hunger hormone’?

Answer 6

Ghrelin (produced by stomach)

Question 7

What does it mean to say ghrelin is pulsatile?

Answer 7

It spikes when we eat food

Question 8

What is the opposite hormone to ghrelin?

Answer 8

Leptin - produced by adipose tissue and is an insulin desensitiser (makes you eat less) - anorexigenic hormone

Question 9

What effects do dieting and exercise have on ghrelin?

Answer 9

Causes ghrelin levels to increase. Diet causes a greater increase.

Question 10

Exercise training increases circulating ghrelin on what condition?

Answer 10

That weight loss also occurs.