Measurement of Metabolism

Using the internet or other sources, give the VO2max values for two actual athletes of different sports and provide your source(s) of information. 

2. Some of the highest VO2max values every recorded have been in cross-country skiers. Explain why. (FYI it's not due to training at altitude.)

3. In your own words explain what VO2max represents from a PHYSIOLOGICAL perspective. True, it is a measure of aerobic fitness but it's also a measurement of what that's happening inside the body?