人的生命不可以没有氧气。大脑缺氧过久,人的生命也将结束。肌肉的长时间工作,同样也需要氧气,训练有素的肌肉,不仅能在有氧情况下工作,而且在身体处于缺氧状态时也能表现出极强的“意志”力。一般说来,大强度短时间运动时的供能是无氧供能,小强度长时间运动时的供能是有氧供能。训练有素的短跑运动员,其肌肉、血液及脑细 Human life can not be without oxygen. The anoxic brain too long, human life will end. Muscles work long hours and also require oxygen and well-trained muscles to work not only aerobically, but also extremely strong “will” forces when the body is hypoxic. In general, the supply of energy for short periods of intense intensity is anaerobic supply, and the supply of energy for long periods of low intensity is aerobic. Well-trained sprinter whose muscles, blood and brain are fine