THE ACUTE EFFECT OF YO-YO INTERMITTENT ENDURANCE TEST LEVEL 1, ON VERTICAL JUMP HEIGHT OF VOLLEYBALL PLAYERS

Abstract

The purpose of this study was to compare volleyball block jump (VBJ) and volleyball attack jump (VAJ) height capacity after performing a conventional warm-up (CWU) and immediately after performing a Yo-Yo Intermittent Endurance Test-Level 1 (YYIE1). After two weeks of the preparation season, each one of thirty-experienced female and male volleyball players, ranged from regional to national level, performed eight VAJ and eight VBJ two minutes after CWU (pre-test), immediately continued with YYIE1, until reaching 80% of VO2max, then after two minutes rest, they performed again eight VAJ and eight VBJ (post-test). Results show a significant positive difference in both VBJ and VAJ between post- and pre-test. Statistical significance is present when comparing average and highest measures. In addition, the first jumps at post-test, which were performed immediately after YYIE1, were significantly higher than the first jumps at pre-test, which were performed immediately after CWU. We conclude that vertical jump (VJ) of volleyball players at a regional and national level, is higher when carried-out immediately after performing YYIE1 until reaching 80% of VO2max, than after CWU. Therefore, it should be considered as a warm-up for volleyball block and attack jump drills. Key words: vertical jump, volleyball block jump, volleyball attack jump, yo-yo intermittent endurance test-level 1, conventional warm-up.

Keywords

• vertical jump, volleyball block jump, volleyball attack jump, yo-yo intermittent endurance test-level 1, conventional warm-up.