L3-5;C5

Question 1

What can the haldane equation NOT measure?

Answer 1

This transfer cannot measure the inspired rate of oxygen

Question 2

What will always be the same concentration during inspired and expired factors?

Answer 2

The concentration of nitrogen is always the same during inspiration and expiration

Question 3

What is the respiratory exchange ratio? What is the RER for glucose?

Answer 3

This is a factor that predicts substrate use of kilocalories/O2 efficiency
RER for one mole of glucose is 1.0
RER is also an indicator of which fuel (carbohydrate or fat) is being metabolized to supply the body with energy.

Question 4

When intensity is maintained, this causes a _____ ______ so we use RER ratio.

Answer 4

Steady state

Question 5

More intense interval exercise= ________ RER

Answer 5

Increased RER

Question 6

What is Resting Metabolic Rate?

Answer 6

This is the minimum amount of energy required by the body to sustain basic cellar fucntion

Question 7

As muscle mass _______ RER ______

Answer 7

Increases, Decreases

Question 8

What is the slow Vo2 component? Explain this.

Answer 8

• this slow component is due to the recruitment of more types ii fibres which are less efficient

Question 9

Relationship between fibres that are less efficient and ATP?

Answer 9

Fibres that are less efficient require more ATP. More ATP synthesis means more O2 has to be taken up

Question 10

An increase in oxygen cost of ATP resynthesis also shows an increased ______ ______

Answer 10

”Contractile cost” of the muscle

Question 11

What is the economy of effort?

Answer 11

• more skilled, less energy you use

- this is independent of VO2max

Question 12

What is the multifactorial phenomenon?

Answer 12

• this states that economy increases with distance of a race. Practice influences better economy of movement and varies with type of exercise

Question 13

What is EPOC?

Answer 13

Excess Post Exercise Consumption

- after an exercise, the amount fo oxygen you intake in a given period is your EPOC

Question 14

What is the lactate threshold?

Answer 14

This is when lactate is accumulating faster than it is being used up. Once it begins to increase this is labeled as your lactate threshold

Question 15

Only about ____ percent of the energy liberated during metabolism of glucose is used to produce ______. The remaining _____ percent is converted to _________

Answer 15

40%, ATP, 60%, heat

Question 16

By measuring the bodies ______ ______ we can find the expended energy that they are using

Answer 16

Heat production

Question 17

What is the ratio for RER?

Answer 17

VCO2:VO2

Question 18

The rate at which the body uses energy is called

Answer 18

Metabolic rate

Question 19

BMR is directly related to what of an individual? Why is this?

Answer 19

BMR is directly related to an individual’s Fat free mass due to the muscles having a high metabolic activity

Question 20

What is VO2 drift? When does it occur?

Answer 20

VO2 drift is the slow increase in VO2 during prolonged submaximal constant power exercise.
This is also found at power outputs below lactate threshold

Question 21

What is VO2max the best at measuring? How long does it take for VO2 max to increase with training?

Answer 21

An individuals aerobic fitness and cardiorespiratory fitness. It takes roughly 8-12 weeks.

Question 22

To be successful in endurance base activities, one needs to have thje following 4 factors:

Answer 22

1. High VO2 max
2. High lactate threshold
3. High economy of effort
4. High % of type 1 fibres