The article presents data on the effective construction of strength training for middle-distance runners in the autumn-winter macrocycle. It was revealed that it is coupled - a sequential form of organizing loads of various predominant orientation, providing for a strict procedure for introducing loads into the process of training athletes with a gradually increasing degree of specificity and strength of the training influence. It was determined that in a six-month training cycle for middle-distance runners of 13-14 year-old, a sequential form of organizing loads with an element of concentration of strength-related loads has a more beneficial effect on the dynamics of the level of motor training than a complex-parallel one.