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实验采用Ｗｉｓｔａｒ雄性大鼠，三种蛋白质摄入水平（７％、１７％、２７％），观察运动对大鼠蛋白质代谢的影响，为探讨运动和体力劳动人群适宜蛋白质需要量研究提供实验室依据。结果表明：运动可降低氮平衡值，运动后，血清尿素氮和氨基酸水平均增高，排肠肌氮含量降低。不同蛋白质摄入水平的大鼠影响程度各异。１７％和２７％蛋白质摄入水平大鼠体重增长无明显差别，均优于７％蛋白质摄入水平的大鼠。运动后，７％蛋白质摄入水平大鼠的蛋白质分解作用较强，未见２７％蛋白质摄入水平优于１７％者，对于急性高强度运动，１７％蛋白质摄入水平可能是适宜的。
The Wistar male rats were used to study the effects of exercise on the protein metabolism in rats with three protein intake levels (7%, 17%, 27%), providing a laboratory basis for exploring suitable protein requirements for exercise and physical labor . The results showed that exercise could reduce the nitrogen balance. After exercise, the levels of serum urea nitrogen and amino acids were increased, and the content of nitrogen in the bowel was decreased. Rats with different levels of protein intake had different degrees of influence. There was no significant difference in body weight gain between 17% and 27% protein intake rats, all of which were better than 7% protein intake rats. After exercise, rats with 7% protein intake had a strong proteolytic action and no 27% protein intake was better than 17%. For acute high-intensity exercise, 17% protein intake may be appropriate.