The lactacid system
ATP supplies in the body are very limited and there is often only enough energy to supply an explosive contraction such as a sprint start. The lactacid system is used by the body to produce ATP when there is insufficient time to break down glycogen in the presence of oxygen for the replenishment of ATP. At the same time that ATP is being broken down in the muscle, another high-energy substance which is stored in our cells – phosphocreatine (PC) – is also being broken down
The aerobic energy system …show more content…
While the aerobic system doesn’t produce nearly as much power as the other systems, a major feature is its capacity which is virtually limitless, as it just keeps on producing ATP. The aerobic system consists of three processes or ‘stages’ each of which produce ATP. These stages involve more complex chemical reactions than the other energy systems which is why ATP production is much slower. (The more complex the process - the longer it takes to produce ATP). The three stages are; Aerobic glycolysis (slow glycolysis), Krebs cycle (also known as the citric acid cycle) and the Electron transport chain. . An athlete who would use the lactacid system is a long distance runner such as Paula