摘要： The research was conducted with the aim to, using experimental methods, scientifically determine whether an additional physical exercise program in regular working conditions of a preschool institution could result in significant changes in the motor skills of preschool children with an average age of 6.21±0.56 years. A total of 64 preschool children, girls (n=28) and boys (n=36), enrolled in preparatory preschool groups in "Čukarica" preschool in Belgrade. A pre-experimental research plan was used, specifically a single-group design and pretest - posttest. A sample of measuring instruments of motor skills was compiled according to a reduced theoretical model (Gredelj et al., 1975; Kurelić et al., 1975) taken from the research of Bala and Popović (2007). The experimental factor was realized with a total of 48 lessons lasting 35 minutes over a 24-week time interval. The results of the study indicate that the quantitative changes in the final measurement are reflected in the repetitive force of the torso and coordination in favor of better average values of the boys. Two hypothetical motor factors were isolated in initial and final measurements, which can still be interpreted as one general Motor Factor. Qualitative changes in the structure of both extracted factors in the final measurement were not observed. The authors believe that a regular physical education program in preschool institutions is not sufficient for a preparatory preschool group, and that additional kinesiology activities yield better results in the mechanism for structuring the movement and regulating the duration of excitation, especially if it is directed towards the development of biotic motor knowledge. On the other hand, they believe that newer and more meaningful solutions must be found in terms of differentiated physical exercise programs for children, and that only such solutions could lead to qualitative changes in the structure of isolated factors.
关键词：coincidence of factor saturation; differences; kinesiology activities; motor skills; preschool children
