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Question 1

What is in doubly labelled water?

Answer 1

2H and oxygen -18

Question 2

How does hydrogen leave the body

Answer 2

As water in urine, sweat or vapour through breathing

Question 3

How does oxygen leave the body

Answer 3

Water and carbon dioxide

Question 4

How is co2 production estimated?

Answer 4

Difference in the rate of loss between hydrogen and oxygen

Question 5

How is energy expenditure calculated in doubly labelled water ?

Answer 5

Ratio of co2 produced to the oxygen used

Question 6

Stevens et al. 2006, 2009

Answer 6

Increase of >3% body weight = excess weight gain

Question 7

How does exercise help weight loss?

Answer 7

Increased energy expenditure

Incatrsed metabolic rate

Question 8

Visceral fat

Answer 8

Around organs, can cause illness such as type 2 diabetes

Question 9

How does PA improve health

Answer 9

Reduce risk of injury and disease
Rehires sedentary behaviour
Improved breathing, muscle strength and joint mobility

Question 10

Sedentary behaviour

Answer 10

Too much sitting

Low energy expenditure of 1.0- 1.5 METs

Question 11

Causes of beast cancer

Answer 11

High Estrogen
Hereditary
Early onset mensuration
Late onset menopause

Question 12

Estrogen

Answer 12

Short regular cycles increase risk as more time spent in the phase of high estrogen

20% decrease for every year that the start of menstration is delayed

Question 13

Menopause

Answer 13

Women who menopause before 45yrs have 1/2 the risk of developing beast cancer than those who menopause after 55