L3 - exercise

Question 1

how much O2 consumed per min at rest

Answer 1

250 ml/min

Question 2

how much CO2 produced per min at rest

Answer 2

200 ml/min

Question 3

what is VO2max

Answer 3

max amount of O2 that a person can use during exercise

Question 4

How many molecules of O2 are consumed and CO2 produced for each molecule of glucose that is fully metabolized?

Answer 4

6 for both

Question 5

Considering your answer to the last question, is it the same situation if we metabolize fatty acids instead of glucose?

Answer 5

no

• fat have lower O2 so have to utilise more O2 molecules to make co2 and water
• less molecules of co2 produced as it goes through beta oxidation
• ratio of RQ for fats is 0.7

Question 6

What is the ratio CO2:O2 usually called

Answer 6

co2 produced/ o2 consumed

Question 7

ratio CO2:O2 - why is it useful?

Answer 7

tells us whether its areobic or anaerboic repsiration

Question 8

how can you measure heart rate

Answer 8

ECG

Question 9

how can you use douglas bags

Answer 9

• to calculate RER or RQ of co2/o2

Question 10

how to work out VO2max

Answer 10

using a graph with o2 consumption against exercise intensity
- the point where the graph flattens out - thats the VO2max