What´s Lactic Acid Energy?

Lactic acid energy is a short term energy system but lasts longer than phosphocreatine energy system with around 60-90 seconds at a athletes maximum work rate due too it’s anaerobic energy system. This energy is able to reach the requirement of a high intensity sport that lasts for a longer amount of time than phosphocreatine which can be useful for a 400m race. Also as it is still an anaerobic energy system it does not require oxygen in order to function.
Lactic acid energy system starts when the Phosphocreatine goes through anaerobic glycolysis. This happens when the phosphocreatine breaks down the glycogen stores in the liver and the muscles but do not have any oxygen. Lactic acid is a by product that limits the performance of an athlete