Vol. 11, No 3, 2013 pp. 221 - 226
UDC 796.332
Original research article
DIFFERENCES IN THE VERTICAL JUMP IN SOCCER PLAYERS ACCORDING TO THEIR POSITION ON THE TEAM
Marko Jezdimirović*, Aleksandar Joksimović, Ratko Stanković, Saša Bubanj
University of Niš, Faculty of Sport and Physical Education, Niš, Serbia
*PhD student
E-mail: jezdimirovicmarko@yahoo.com
Abstract. The vertical jump is used in order to estimate the explosive strength of the lower extremities. The literature generally recommends a two-foot vertical jump in order to identify talent, to assess an athlete's readiness to participate in a certain training process. The aim of the current study was to compare the variables of the demonstrated explosive leg power in relation to the player's position in the team using the vertical jump, the so-called Countermovement Jump (CMJ). The sample of participants consisted of 32 healthy male students of the Faculty of Sport and Physical Education from Nis who practice soccer, aged 20.18 ± 1.28 years, body height 181.28 ± 5.61 cm, weight 74.19 ± 6.58 kg and average age of practicing soccer 9.38 ± 2.76 years. The participants performed five CMJ rebounds with both feet. By using the wireless accelerometer Myotest (Sion, Switzerland), the values of the following variables of CMJ were determined: Height (height in cm), Power (power expressed in W / kg), Force (force expressed in N / kg) and Velocity (speed expressed in cm / s). The results of this study showed that there were statistically significant differences in the jump height variables in soccer players according to the position in the team, while the other variables showed no statistically significant differences. The obtained data can be helpful to future participants in the sense that they can improve their explosive muscle power. The results of this study can be useful in educating coaches to apply the vertical jump to assess the necessary explosive strength of the lower extremities in soccer players.
Key words: explosive power, vertical jump, soccer players, the difference
RAZLIKE U VERTIKALNOM SKOKU KOD FUDBALERA U ODNOSU NA POZICIJU U TIMU
Vertikalni skok se koristi u cilju procene ekplozivne snage donjih ekstremiteta. U literaturi se uglavnom preporučuje sunožni vertikalni skok u cilju identifikacije talenata, procene spremnosti sportiste da se uključi u određeni trenažni proces. Cilj aktuelnog istraživanja bio je da se uporede varijable ispoljene eksplozivne snage donjih ekstremiteta kod fudbalera u odnosu na poziciju u timu primenom vertikalnog skoka, tzv. Countermovement Jump (CMJ). Uzorak ispitanika se sastojao od 32 zdrava studenta Fakulteta sporta i fizičkog vaspitanja iz Niša, koji upražnjavaju (bave fudbalom) fudbal, muškog pola, starosti 20,18 ± 1,28 godina, telesne visine 181,28 ± 5,61 cm, telesne težine 74,19 ± 6,58 kg i prosečne godine bavljenja fudbalom 9,38 ± 2,76 godina. Ispitanici su izveli pet CMJ odskokom sa obe noge. Upotrebom bežičnog akcelerometra «Myotest» (Sion, Švajcarska), utvrđene su vrednosti sledećih varijabli CMJ: Height (visine izražene u cm), Power (snage izražene u W/kg), Force (sile izražene u N/kg) i Velocity (brzine izražene u cm/s). Rezultati ovog istraživanja pokazali su da postoje statističke značajne razlike u varijabli visina skoka kod fudbalera u odnosu na poziciju u timu, dok kod ostalih varijabli ne postoje statističke značajne razlike. Dobijeni podaci mogu biti od pomoći budućim ispitanicima u poboljšanju njihove eksplozivne snage mišića. Rezultati aktuelnog istraživanja mogu biti korisni pri edukaciji trenera da primenjuju vertikalne skokove u proceni neophodne eksplozivne snage donjih ekstremiteta kod fudbalera.
Ključne reči: eksplozivna snaga, vertikalni skok, fudbaleri, razlika
