Lab 5 - O2 Consumption and VO2 Max

Question 1

Energy for human movement is primarily derived from the breakdown of ……….. and …….. which is released for muscular contraction from ATP.

Answer 1

carbohydrates, fats

Question 2

As exercise approaches maximal intensity, ………./……… becomes the predominant energy source.

Answer 2

glucose/glycogen

Question 3

What is VO2?

What is it expressed in?

Answer 3

• the rate of oxygen consumption

- L.min-1 (absolute) or mL.kg-1.min-1 (relative) terms.

Question 4

What is VO2 max?

What is it expressed in?

Answer 4

• the maximal rate of oxygen consumption under maximal exercise conditions.
• L.min-1 (absolute) or mL.kg-1.min-1 (relative) terms.

Question 5

What is VC2?

What is it expressed in?

Answer 5

• the rate of carbon dioxide production

- L.min-1.

Question 6

What is VE1?

What is it expressed in?

Answer 6

• ventilation, the volume of air being expired every minute

- L.min-1.

Question 7

What is RQ?

Answer 7

respiratory quotient, the ratio of VCO2/VO2.

Question 8

What is Oxygen Deficit?

Answer 8

• the difference between the amount of O2 consumed during exercise and the amount that would have been consumed if it were possible to supply all energy via aerobic metabolism.

Question 9

What is Gross Oxygen Consumption?

Answer 9

the total amount of oxygen consumed during any defined period of time.

Question 10

Energy Cost (Kcal) formula =

Answer 10

avg VO2 x Caloric Equivalent (based on avg RQ) x exercise time