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对各种营养素在人体内的代谢过程和生物学作用进行研究后,人们发现了糖是人体运动过程中最经济、最及时的能量来源。所谓经济主要是指:每消耗一升氧,糖可释放5011卡热量,而脂肪却只能释放4655卡热量,可见相同数量的氧用于氧化糖比用于氧化脂肪能获得更多的热量,而运动过程中运动员所可能获得和利用的氧量受到最大吸氧量水平的限制,因而如果能将这些有限的氧越是更多的用于氧化糖,则运动员在运动过程中将获得越多的能量,
After studying the metabolic processes and biological functions of various nutrients in the human body, it was found that sugar is the most economical and timely source of energy for human movement. The so-called economy refers mainly to: every consumption of oxygen, sugar can release 5011 calories, while the fat can only release 4655 calories, showing the same amount of oxygen for oxidized sugar than for fat oxidation can get more calories, However, the amount of oxygen that athletes may gain and utilize during exercise is limited by the maximum oxygen uptake level. Therefore, if the more limited oxygen can be used to oxidize sugar more, the more the athlete will obtain during exercise energy of,