Vo2 MAX

Question 1

Define Vo2 max?

Answer 1

The maximum volume of oxygen that can be taken up by the muscles per minute.

Question 2

List physiological factors affecting Vo2 max?

Answer 2

• increased maximum cardiac output
• increased stroke volume
• greater heart rate range
• increased levels of haemoglobin and red blood cell count.
• increased stores of glycogen and triglycerides
• increased myoglobin content
• increased number and size of mitochondria
• increased surface area of alveoli
• increased lactate tolerance

Question 3

Explain how training affects Vo2 max

Answer 3

• can be improved by up to 20% following aerobic training

- such as fartlek training, continuous and interval training.

Question 4

Explain how body composition affects Vo2 max?

Answer 4

• a higher percentage of body fat decreases Vo2 max.

Question 5

What are factors that affect Vo2 max

Answer 5

• genetics
• body composition
• physiology
• age
• gender
• training
• lifestyle

Question 6

what is calorimetry?

Answer 6

• the calculation of heat in physical changes and chemical reactions.

Question 7

what is indirect calorimetry?

Answer 7

Measures the production CO2 and/or consumption of O2

Question 8

What is lactate sampling used for?

Answer 8

• monitor training and predict performance
• involves taking a tiny sample of blood which tells you blood lactate levels.
• also tells you exercise intensity
• ## gives an idea of your fitness

Question 9

What is direct gas analysis?

Answer 9

• measures the concentration of oxygen that is inspired and the concentration of carbon dioxide that is exhaled.

Question 10

What is the respiratory exchange ratio?

Answer 10

Ratio of carbon dioxide produced compared with oxygen consumption.
- RER= VCO2/VO2