Vol. 9, No 2, 2011 pp. 151 - 159
UDC 796.012.11
Original empirical article
DIFFERENCES IN MANIFESTED EXPLOSIVE STRENGTH TESTED BY MEANS OF THE VERTICAL JUMP WITH AND WITHOUT PREVIOUS STATIC STRETCHING
Saša Bubanj, Tomislav Okičić, Mladen Živković, Ratko Stanković, Ivana Bojić, Radoslav Bubanj
Faculty of Sport and Physical Education of University of Niš, Niš, Serbia
Abstract. Explosive strength is the motor ability of an athlete, which is manifested by the one-shot, acyclic, maximum muscle strain. The vertical jump is a test of muscle strength of the lower extremities. With the aim of increasing performance, reducing the risk of injury and increase the amplitude of the movement in athletes, many coaches recommend and implement static stretching in the training process, just before the competition. The aim of the current study was to determine the differences in manifested explosive strength, under the conditions with and without the use of passive static stretching, just before the physical activity. The sample consisted of 17 male subjects, students of the Faculty of Sport and Physical Education in Niš, divided into an experimental sub-sample (Nes = 7) and a control sub-sample (Ncs = 10). The subjects performed a vertical jump, the so-called Countermovement Jump, during the initial and final measurement. The results of the actual research indicated that the static stretching had neither a negative nor positive impact on the manifested explosive strength, i.e., success of the subjects in the vertical jump. As a precaution, i.e. with the aim of reducing the possibility of a potential injury, the recommendation for athletes is to apply static stretching exercises before a certain physical activity.
Key words: explosive strength, countermovement jump, static stretching, initial-final measuring, differences
RAZLIKA U EKSPLOZIVNOJ SNAZI TESTIRANOJ VERTIKALNIM SKOKOM SA I BEZ PRETHODNOG STATIČKOG ISTEZANJA
Eksplozivna snaga je motorička sposobnost sportiste koja se ispoljava kroz jednopotezno, aciklično maksimalno naprezanje mišića. Vertikalni skok je test snage donjih ekstremiteta. Da bi se poboljšala izvodljivost, smanjio rizik povrede i povećala amplituda pokreta atletičara, mnogi treneri preporučuju i uvode statičko istezanje tokom treniranja pred takmičenje. Cilj aktuelnog istraživanja bio je da se odrede razlike u ispoljenoj efektivnoj snazi u uslovima sa i bez primene pasivnog statičkog istezanja pre fizičke aktivnosti. Uzorak ispitanika se sastojao od 17 muškaraca, studenata Fakulteta sporta i fizičkog vaspitanja iz Niša, podeljenih u eksperimentalni subuzorak (Nes = 7) i kontrolni subuzorak (Ncs = 10). Ispitanici su prilikom inicijalnog i finalnog merenja izvodili vertikalne skokove, tzv. skok sa počučnjem. Rezultati aktuelnog istraživanja pokazali su da statičko istezanje nije imalo ni negativan ni pozitivan uticaj na ispoljenu eksplozivnu snagu, tj., uspeh učesnika u vertikalnom skoku. Predostrožnosti radi, tj., sa ciljem da smanje mogućnost potencijalnih povreda i da povećaju opseg pokreta u određenim zglobovima, preporuka sportistima je da primenjuju vežbe statičkog istezanja.
Ključne reči: eksplozivna snaga, skok sa počučnjem, statički strečing, inicijalno-finalno merenje, razlike
