Anaerobic energy metabolism

At what exercise level does the body switch to anaerobic energy metabolism?

O2 & CO2 and anaeorbic threshold

What biochemical rationale exists for measuring oxygen consumption, ventilation and carbon dioxide production to infer onset of anaerobic threshold during exerise?

Cardiac rehab exercise prescription

What would be objective indications of CHD during a graded exercise test and how the results of this test be utilized in a cardiac rehab exercise prescription?

Limit of VO2 max and muscle mass

What would be a physiologic rationale to support or refute the contention that either (1) central circulatory factors or (2) peripheral factors residing within the active muscle mass limit VO2 max?

Exercise physiology - Mechanical Efficiency during running

Could someone please discuss the practical implications for testing and knowing that someone has significantly lower economy of movement (mechanical efficiency) during running than they should? [This is the second time I have posted this problem because I did not understand the first response which stated ATP. But what does it mean by "practical implacations for tesing. Does 'lower economy of movement during running imply incorrect form, wasted energy, bad shoes... I am having a hard time understanding this concept.]