Changes in protein metabolism as signs of the state of fitness of the body with extreme muscular work and further training

This article examines the state of fitness of the body with extreme muscular work and their changes with further training. An important part in training is protein metabolism, which works to restore muscles after stress (training) and the body as a whole. Therefore, we conducted observations on the basis of three periods in the conditions of the valley and the mountain climate — a period of rest, load, and rest again.We observed changes in the state of nitrogen under these conditions. What we got: limiting muscle load initially causes an increase in nitrogen excretion, however, as the state of fitness develops, the same muscle load by the end of the working period has almost no effect on nitrogen excretion.