The aim of the study was to analyze integration of aerobic power into other dimensions
evaluated. For this purpose, predictor relations of the morphological-motor variables
were analyzed with a 3-minute run as a criterion (according to school grade and
sex). Four morphological and 6 motor variables covering the morphological-motor system
were used in a sample of 4,440 children of both sexes aged 7–11 years, elementary
school first- to four-graders from the Primorje–Gorski Kotar County, Republic of Croatia,
divided into 8 groups. Data were processed by use of regression analysis. Study results
clearly showed the values of the criterion variable to rise and criterion prediction
using the set of predictor variables to improve with age. Also, the number of predictors
included in power run prediction was observed to significantly increase with age.
Strength factors with a predominance of explosive strength and repetitive strength in
boys and girls, respectively, were the best criterion predictors. It is emphasized that development
of the morphological-motor system and thus functioning of the body as a
whole are influenced by aerobic power upgrading. Appropriate systematic kinesiologic
activities accelerate the process of aerobic power integration in the morphological-motor
system. As indicated by study results, this integration occurred at a faster rate and was
more intensive in girls than in boys
