How understanding your body’s aerobic and anaerobic energy systems can help you to train smarter and run better ...

There are two types of respiration: Aerobic respiration occurs in the presence of oxygen and in most cells most of the time. Anaerobic respiration occurs without oxygen and much less frequently ...

Measurements included resting heart rate, aerobic power, anaerobic power, and anaerobic capacity. Results—Paired t test analysis showed no significant differences in either resting heart rate or ...