Darko Stojanović

The Level of Specific Endurance and Technical and Tactical Efficiency of Young Football Players of Different Level of Competition / Nivo specifične izdržljivosti i tehničko-taktičke efikasnosti mladih fudbalera različitog stepena takmičenja

In order to determine at which level is the specific performance and technical and tactical efficiency of young players of different level of competition, and whether the level of competition can be an indicator of level differences of these abilities, a research was conducted on the sample of young football players aged 14 to 16 from the eight clubs, half of them competing in the higher and the other half in the lower level of competition. A sample of measuring instruments consisted of 13 tests for evaluation of five factors of specific endurance: starting endurance, stamina in maintaining the shallow formation, endurance during fast dribbling, ball pressing endurance, and evaluation of technical and tactical efficiency of football players. The results of the research showed that the young players of higher level of competition had significantly greater technical and tactical efficiency, as well as specific performance in tests which included curvilinear movement and dribbling, as well as control and passing the ball in motion, but the difference is not recorded with straight-line movements and sprints.

DEVELOPMENTAL CHARACTERISTICS OF PRESCHOOL AGED GIRLS FROM DIFFERENT URBAN AREAS

Human growth and development are under the influence of both genetic and environmental factors. Longitudinal and transversal dimensions of skeleton are, to a large extent, genetically determined contrary to circular dimensions, body weight and skin fold. The aim of this research was to determine developmental differences between the girls from Vranje and Užice. This research was conducted in kindergartens of Vranje and Užice. The sample comprised 136 girls, 72 of whom were 5 (+ eight months) years of age from Užice, and 64 of whom were 5 (+ seven months) years of age from Vranje. We used standardized instruments to measure the anthropometric characteristics, according to the methodology recommended by the International Biological Program (Weiner & Lourie, 1981). The average height of the girls from Vranje is 118, 6±5, 37 cm, and of the girls from Užice 119, 4±5, 46 cm. The girls from Užice were taller than those from Vranje, but the difference in height is not statistically significant. The results have shown that there is statistically significant difference in leg length. The average leg length of the girls from Vranje is 63,2±4,55cm, and those from Užice 64,7±3,96 cm. The girls from Vranje have greater pelvic width than the girls from Užice, which is statistically significant. We have not observed statistically significant differences concerning other measured anthropometric variables.