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Abstract

The aim of this study was to examine the acute effect of synergist and antagonist muscles static stretching (SS) on the body segmental angles, during a strength element on parallel bars (V-sit). Fourteen male recreational gymnasts (20.9 ± 2.2 years) were asked to follow three different protocols with the following order: a) general warm-up without stretching (WU), b) synergist muscles static stretching (SSS) and c) antagonist muscles static stretching (ASS). Right after each condition, the gymnasts were photographed in the sagittal plane, executing a V-sit position on parallel bars with legs extended and stabilized at the highest possible level. The leg- horizontal, trunk-vertical and arm-vertical angles were measured using image-pro software. Pairwise comparisons revealed a significant decrease for legs-horizontal angle, after the SS exercise of synergist muscles (SSS<WU, p<.01). The antagonist muscles SS resulted in significant increase for legs-horizontal angle, compared with synergist muscles SS condition (ASS>SSS, p<.001). Consequently, synergist muscles SS may not be recommended before gymnastics exercises that require maximal strength production. Nevertheless, the beneficial acute effect of antagonist muscles SS can act as a counterbalance to diminish or inhibit the SS detrimental acute effect on synergist' muscles.

Keywords: Static Stretching, Force Element, Digital Photography, Goniometry, Gymnastics.

VPLIV STATI?NEGA RAZTEZANJA MISI? UPOGIBALK IN IZTEGOVALK TRUPA NA IZVEDBO VZNOSA V OPORI NA BRADLJI

Namen raziskave je bil ugotoviti vpliv treh razli?nih na?inov raztezanja na izvedbo vznosa v opori na bradlji. Prvi na?in raztezanja je bil klasi?ni na?in brez stati?nega raztezanja, drugi na?in je bil s stati?nim raztezanjem upogibalk in tretji s stati?nim raztezanjem iztegovalk trupa. Stirinajst telovadcev (nizje kakovosti) je po izvedbi posameznega raztezanja naredilo vznos, kateri je bil posnet s fotoaparatom. Izmerjeni so bili koti med podlago in nogami, kot med trupom in navpi?nico ter kot med rokami in navpi?nico. Parna primerjava je pokazala, da je stati?no raztezanje misic upogibalk trupa neprimerno, saj se kot med nogami in podlago zmanjsa. Pri stati?nem raztezanju iztegovalk se kot med nogami in podlago pove?a. Dodatno ni priporo?ljivo stati?no raztezanje upogibalk pri nalogah, kjer je potem potrebna najve?ja sila. Pomembno je, da se vedno izvede tako stati?no raztezanje upogibalk, kot iztegovalk, da se izni?i njuno delovanje.

Klju?ne besede: stati?no raztezanje, prvina mo?i, digitalna fotografija, goniometer, telovadba.

INTRODUCTION

Stretching is crucial to enhance gymnasts'...

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