The physical growth and development of motor skills, are important components that can be programmed to act physical exercise and training. The aim of this study is to present the impact of volleyball training at changing the general and specific motor abilities at female volleyball players 13-14 years old. The sample represented 40 subjects, students at volleyball school "DIF" from Belgrade. In this study, the sample of variables is divided into two sub-samples (variable assessment of general motor skills and variables to assess specific skills in volleyball). On the first day, they made measurements of height and weight (in the gym) and conducted tests: long jump seats (SUD), easy to block (DUB), running at 20 m (TRC), and the second day were conducted in the remaining three tests (Russell Lang-testfingers (RLTP), Russell Lang-test -"hammer" (RLTC) and service (RLTS)). Repeat testing (re-test) was carried out in three months. Regarding the experimental factor that is active during the three months, it is important to mention that the trainings are held 4 times a week. The results (applied comparative statistics and t-test for small dependent samples), indicating that there was a positive difference in all variables, three months after the programmed work, and particularly demonstrated statistical significance of the variable long jump places (SUD) and in all three specific abilities (RLTP, RLTC and RLTS). The positive changes in the expression of general and specific abilities of volleyball players aged 13-14 years can be achieved only by well-programmed training sessions, conducted by trained specialists.

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SažetakFizička aktivnost pozitivno utiče na smanjenje rizika od nastanka bolesti kardiovaskularnog sistema, gojaznosti, diabetesa, osteoporoze, bolesti disajnog sistema, itd. Iako je većina istraživanja koja su se bavila fizičkom aktivnošću vršena na odraslim osobama, podaci ukazuju na to da je situacija alarmantna i kada je u pitanju nivo fizičkih aktivnosti i razvijenost fizičke forme dece. Od 1990. godine, trend učestvovanja u regularnim nivoima fizičke aktivnosti je u opadanju u svim uzrasnim kategorijama. Jedan od glavnih problema koji se javlja u istraživanjima fizičke aktivnosti mladih je odsustvo tačnih i pouzdanih testovnih procedura za merenje fizičke aktivnosti i stanja fizičke forme dece.Kada posmatramo najviše korišćene baterije testova za procenu stanja fizičke forme, možemo da primetimo da svi ti protokoli mere iste komponente: kardiorespiratornu izdržljivost, mišićnu snagu i izdržljivost, pokretljivost i sastav tela.Sa druge strane, kada se meri nivo fizičke aktivnosti, najčešće primenjivan instrument je upitnik. Cilj ovog istraživanja je utvrđivanje stanja komponenti fizičke forme dece predškolskog uzrasta, uz pomoć preporučenih testovnih procedura, kao i procena nivoa fizičke aktivnosti u slobodno vreme uz pomoć upitnika. Ovakvo istraživanje obezbeđuje uvid u nivo razvijenosti fizičke forme predškolske dece, kao i karakter povezanosti obima fizičke aktivnosti u slobodno vreme sa stanjem fizičke forme. Rezultati ukazuju na to da deca, već u ovom uzrastu, pokazuju loše stanje nekih komponenti fizičke forme koje su povezane sa zdravljem. Takođe, deca nisu dovoljno aktivna ni u dnevnim i nedeljnim sportsko-rekreativnim aktivnostima.Ključne reči: Predškolci, Fizička forma, Fizička aktivnost MEASUREMENT OF PHYSICAL ACTIVITY AND PHYSICAL FITNESS IN PRESCHOOL CHILDREN AbstractPhysical activity has been positively associated with reduction of risk of cardiovascular disease, obesity, diabetes, pulmonary disease, etc. Although much of the research related to physical activity has been conducted with adults,

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The aim of the research was to measure and assess general motor skills and anthropometric characteristics of untrained boys and volleyball players 17 years old and to present the results of a comparative statistical analysis. The results show that there are no statistically significant differences in body height, mass and body-mass index, at the same time statistically significant differences were observed in tests: 30 m sprint, medicine ball throw, standing long jump and bench bend, between volleyball players and untrained boys. Results in "flamingo" test did not show a statistically significant difference. In conclusion, volleyball training, with physical education classes, helps further improvement of certain motor abilities.