According to the amount of oxygen that can be ingested during exercise, there are three different systems for energy supply during exercise . In the absence of adequate oxygen supply, the "high-energy phosphide system" relies on the decomposition of adenosine triphosphate and creatine phosphate to release energy and supply muscle activity, but it can only maintain for 1 to 8 seconds . Muscle glycogen stored in the muscle then decomposes, releasing energy for the muscles to continue working, called the "lactic acid system." When relying on the lactic acid system to supply energy, because there is not enough oxygen supply, muscle glycogen will liberate energy and at the same time, it will produce a large amount of lactic acid. Because the lactic acid accumulates in the muscles, the exercise capacity rapidly decreases, and the duration of exercise is at most 3 to 5 minutes . Reliance on the above two "anaerobic metabolism" pathways to supply energy to the sport is an anaerobic exercise.
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Aerobic exercise means that when you exercise, you can get enough oxygen supply. The main energy-supplying substance, sugar, can be completely decomposed into carbon dioxide and water, and release a lot of energy to provide long-term exercise for the human body. It is called an "aerobic system." Or "aerobic metabolism system." Aerobic exercise refers to a sports program that mainly uses aerobic metabolic system for energy during exercise. Aerobic exercise is generally sustainable for a long time and is also called endurance exercise.
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