Abstract
The sample of 333 boys of pre-school age was classified according to the length of treatment, i.e. physical exercises in pre-school institution, into three groups. Testing of motor abilities was carried out at the enrollment in elementary school. The data elaboration gave results that point a significantly better motor abilities of the groups that have been exercising from the so called nursery and younger age to the school period compared to the group that exercised only in the older group before the enrollment in school. The group that has been practicing for the longest period, since nursery to the enrollment in school, does not have statistically better results from the group that was involved in the treatment at lower age, and practiced to the enrollment in school, which proves smaller effect of exercising in nursery. The reduced effects are probably the result of worse conditions related to premises, material resources and personnel in nurseries. A relatively great number of children joins the educational work, therefore in the exercising program of the pre-school institution, which proved to be a disadvantage in the research, so it is necessary to study the causes of this phenomenon, and put some effort to eliminate them.