A marathoner expends ~3000 kcals of energy over the course of 26 miles. Assuming

ID: 3508691 • Letter: A

Question

A marathoner expends ~3000 kcals of energy over the course of 26 miles. Assuming that the marathon was run at an RQ of 0.85 what is the total O2 uptake in L over the course of the marathon?

158 L

617 L

541 L

625 L

Question 22

How long would it take to burn 100 grams of carbohydrate while exercising at a VO2 of 1.5 liters/min and an RER of 0.77?

1 hour, 32 minutes

3 hours, 20 minutes

4 hours, 11 minutes

5 hours, 17 minutes

A half-marathoner expends 1600 kcals of energy over the course of 13 miles. Assuming that the half-marathon was run at an RQ of 0.85. Secondly, if the body fat stores in the individual were 8kg what is the net amount of fat left in adipose tissue depots at the end of the event?

7.912 kg

6.0 kg

6.5 kg

158 L

617 L

541 L

625 L

Explanation / Answer

0.71

0.75

0.80

0.85

0.90

0.95

1.00

4.69

4.74

4.80

4.86

4.92

4.99

5.05

Kcal consumed = VO2 X energy expenditure

3000= VO2 X 4.86

3000 / 4.86 = VO2

617.28 litre is VO2, so the answer is "c"

RER /RQ Energy expenditure Kcal/L02