Anaerobic exercise is used by athletes in non-endurance sports to promote strength, speed and power and by body builders to build muscle mass. Muscles trained using anaerobic exercise develop differently compared to aerobic exercise, leading to greater performance in short duration, high intensity activities, which last from mere seconds up to about 2 minutes.
The tests detailed in this section include tests designed to assess both parts of the anaerobic energy system. Those which are completed in 10 seconds or less are primarily assessing the alactic anaerobic system while those taking between 10 to 90 seconds are assessing the lactic anaerobic system.