Vol. 5, No 2, 2007 pp. 109 - 120
UDC 797.253.4
Scientific Paper
THE ASSESSMENT OF THE ACQUISITION OF VARIOUS CRAWL STYLE MODES IN WATER POLO PLAYERS WITH RESPECT TO AGE AND COMPETITIVE LEVELS
Milivoj Dopsaj1, Dejan Madić2, Tomislav Okičić2
1Academy of Criminalistic and Police Studies, Belgrade, Serbia
2Faculty of Sport and Physical Education, University of Niš, Niš, Serbia
Abstract. The research included 173 water-polo players aged 12 to 20, who were members of different water-polo clubs as representatives at the 1st national league level, and 187 players aged 11 to 20 who were members of different national water-polo selections from Serbia. The maximum time of swimming at a distance of 25 m was measured for every player whereby swimming meant using three different crawl techniques: 25m with the head under water - the basic technical skill level, 25m with the head above water - the directed skill level and 25m while leading the ball - the specific skill level. The results showed that there was a general, statistically significant difference among the given swimming tests and among the monitored samples in relation to the competitive level (Wilks’ Lambda – 0.789, F = 31.11, p = 0.000), in relation to the age of the groups (Wilks’ Lambda – 0.270, F = 49.12, p = 0.000) as well as in relation to the competitor category in the function of age groups (Wilks’ Lambda – 0.920, F = 2.45, p = 0.004). By applying mathematical modeling by means of the method of smallest square numbers - the second-degree polynomial, models are defined which describe the regularity of the changes in the intensity of swimming at a distance of 25m from the aspect of the different crawl techniques regarding age and the competitive level.
Key words:  water polo, water polo crawl, training process control
PROCENA USVOJENOSTI RAZLIČITIH MODALITETA PLIVANJA KRAUL TEHNIKE KOD VATERPOLISTA
U FUNKCIJI UZRASTA I TAKMIČARSKOG NIVOA
U istraživanju je učestvovalo 173 vaterpolista uzrasta od 12 do 20 godina, članova klubova iz Srbije, kao predstavnika pet uzrastnih kategorija kluba iz I nacionalne lige i 187 igrača uzrasta od 11 do 20 godina koji su bili članovi pet različitih nacionalnih vaterpolo selekcija Srbije. Kod svih igrača je izmereno vreme za maksimalno preplivavanje deonice od 25 metara i to primenom tri različite tehnike plivanja kraul: 25m sa glavom u vodi – osnovni nivo tehničke obučenosti, 25m sa glavom van vode – usmereni nivo tehničke obučenosti i 25m sa vođenjem lopte – specifični nivo tehničke obučenosti. Primenom matematičkog modelovanja pomoću metode najmanjih kvadrata – polinomom drugog stepena, definisani su modeli koji opisuju zakonitost promene intenziteta plivanja na deonici od 25m sa aspekta različitih kraul tehnika u funkciji uzrasta i takmičarskog nivoa. Takođe, primenom multivarijatnih statističkih metoda utvrđeno je postojanje razlike srednjih vrednosti posmatranih varijabli u odnosu na takmičarski nivo i uzrastne grupe. Rezultati su pokazali da postoji generalna statistički značajna razlika između datih plivačkih testova između posmatranih uzoraka u odnosu na takmičarski nivo (Wilks’ Lambda – 0,789, F = 31,11, p = 0,000), u odnosu na uzrastne grupe (Wilks’ Lambda – 0,270, F = 49,12, p = 0,000), kao i u odnosu na takmičarsku kategoriju u funkciji uzrastnih grupa (Wilks’ Lambda – 0,920, F = 2,45, p = 0,004).
Ključne reči: vaterpolo, vaterpolo kraul, kontrola trenažnog procesa