The system of 29 variables, 12 of which were anthropometrical variables and 17 were intended to evaluate basic motor abilities, was applied to the sample of 105 subjects (boys engaged in football). The purpose of research was to determine relations between the system of morphological variables and the system of the basic motor variables. According to the canonic correlation analysis it was determined that the relations between the two systems were of moderate intensity. Based on the structure of relations between the first canonic factor from the system of anthropometrical variables and the first canonic factor from the system of the basic motor variables, it can be concluded that those boys who had bigger skeleton dimensions achieved better results predominantly in tests for evaluation of explosive strength, running endurance and repetitive strength of trunk muscles and vice versa, as they had better mechanisms for excitation intensity, i.e. mobilization speed and intensity of engaging motor units. .
