The three energy supply systems are ATP-CP system, glycolysis system and oxidation energy system, which are not independent of each other. When we do anaerobic exercise, all energy systems will participate in the energy supply of the body, usually one energy system is the main one, unless the main energy supply system is replaced by another system.
The metabolism of the body is accelerated during exercise, and the accelerated metabolism needs to consume more energy. The energy of human body comes from the catabolism of sugar, protein and fat.
Extended data
Human movement needs energy. If energy comes from aerobic metabolism (oxidation reaction) in cells, it is aerobic exercise. But if energy comes from anaerobic glycolysis, it is anaerobic exercise. During aerobic metabolism, fully oxidizing 1 molecule glucose can produce 30 ~ 32 ATP (energy unit) energy.
However, in anaerobic fermentation, 1 molecule glucose only produces 2 ATP. During aerobic exercise, glucose metabolism produces water and carbon dioxide, which are easily excreted through breathing and are harmless to human body. However, a large number of intermediate metabolites such as lactic acid are produced during glycolysis, which cannot be eliminated by breathing.
When these acidic products accumulate in cells and blood, they become "fatigue toxins", which will make people feel tired and weak, muscle aches, difficulty breathing, rapid heartbeat and arrhythmia. In severe cases, acidosis will occur and the burden on liver and kidney will increase. Therefore, after anaerobic exercise, people will always be exhausted, and muscle aches will last for a few days before they disappear.
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