14 Sep 2007
We have discussed the two primary anaerobic fuel systems: 1) The ATP system and 2) the lactic acid system (Anaerobic). The difference between these anaerobic fuel systems and the aerobic fuel system is duration.
Any activity that occurs in less than 30 seconds will rely heavily upon the ATP system. After 30 seconds and up to 3 minutes the body will use the anaerobic lactic acid system to re synthesize ATP so the activity can continue.