The aim of this study was to investigate the differences in loaded and unloaded jump performances between different age categories of top-level volleyball players from the same club. Forty-three volleyball players were divided into four age groups: under-17, under-19, under-21 and professional. Vertical jumping height for squat jump (SJ), countermovement jump (CMJ) and CMJ with arm swing (CMJa)...

The paper analyzes the sport motivation change of students before and after sport education model by setting and implementing sport education model, which takes volleyball elective course in university for example. Sport education volleyball season model is adopted in this paper. Questionnaires were sent to respondents in experimental class before and after the experiment. Finally, statistical ...

BACKGROUND The 'jumper's knee paradox', where symptomatic athletes appear to perform better in a counter movement jump (CMJ) compared to asymptomatic controls in previous case-control studies is not fully understood. AIM The aim was to examine the relationship between jumping ability and change of jumping ability as potential risk factors for developing jumper's knee. METHODS A 5-year prosp...

The "hot hand" belief in sports refers to the conviction that a player has a higher chance of making a shot after two or three successful shots than after two or three misses (resulting in "streaks"). This belief is usually considered a cognitive fallacy, although it has been conjectured that in basketball the defense will attack a "hot" player and prevent streaks from occurring. To address thi...

TRANSLATION EDITORS Chinese: Doris-Lu Anderson, Ph. D., California State Long Beach University, USA Czech: PhDr. Rostislav Vorálek, Ph.D. French: Frederique Sevet-Collier, Ph. D. Portuguese: Mario Marques, Ph. D., University of Beira Interior, Portugal Spanish: Catallina Franco-Cicero, M. S., Barry University, USA & Julio Morales, Ph. D., Lamar University, USA EDITORIAL BOARD (members plus edit...

Newton, R.U., R.A. Rogers, J.S. Volek, K. Häkkinen, and W.J. Kraemer. Four weeks of optimal load ballistic resistance training at the end of season attenuates declining jump performance of women volleyball players. J. Strength Cond. Res. 20(4):955–961. 2006.—Anecdotal and research evidence is that vertical jump performance declines over the competitive volleyball season. The purpose of this stu...

BACKGROUND Only limited data are available for evaluating the effects of the administration of grape seed extract (GSE) on the metabolic status of female volleyball players. OBJECTIVES This study was conducted to determine the effects of GSE administration on the metabolic status of female volleyball players. METHODS This randomized, double-blind, placebo-controlled clinical trial was perfo...

Despite the inclusion of beach volleyball as an Olympic discipline with a fully professional world tour, little research has been published that has examined the physical qualities of internationally competitive athletes. Thirty international-standard beach volleyball athletes (14 male, 16 female) performed countermovement jumps (CMJ) and squat jumps (SJ) on a force platform. Ground reaction fo...