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在科学昌明的今天,运动生物化学、运动生理学的众多研究成果一定程度地揭示了运动过程中人体物质代谢和能量代谢的规律.指出了不同项目供能代谢的特征。了解和掌握这些特征是科学地制定训练计划,控制运动量的首要的关键性工作,主导着训练工作的成败。耐力性项目的主要特征之一是:由于其持续不断的工作时间较长,有机体逐步克服了生理惰性,使呼吸系统机能,循环系统机能逐步达到了最大吸氧量水平。同时人体又不可能以速度和速度耐力性项目的强度进行这种长时间的持续工作,因而单位时间内能源支付量较这两者为少,需氧量也自然较低。于是吸氧量与需氧量之间的差异比在速度性项目和速度耐力
In science and technology, many researches on sports biochemistry and sports physiology have revealed the laws of human metabolism and energy metabolism to a certain extent, and pointed out the energy metabolism characteristics of different projects. Understanding and mastering these features is the most important and crucial task in scientifically formulating a training plan and controlling the amount of exercise, which dominates the success or failure of training work. One of the main features of the endurance project is that due to its long continuous working hours, the organism gradually overcomes the physiological inertia, so that the respiratory system function and circulatory system function gradually reach the maximum oxygen absorption level. At the same time, it is impossible for the human body to perform such long-term continuous work with the strength of the speed and speed endurance projects. Therefore, the energy payment per unit time is less than the two and the oxygen demand is also naturally lower. So the difference between oxygen uptake and oxygen demand is greater than in speedy items and speed endurance