Search

In the management of team sport competition, timeouts are one of the main tools of the coach to stop the game. It could be used on changing trends or the rhythm of the game, and also on providing relevant information to the players. So, it may have an important effect in sporting success. The main objective of the research was to analyse the use of timeouts (TO) in U-19 male volleyball teams, as well as the effect of the game on then, depending on the match score (winning-balanced, or losing). 171 timeouts, requested by coaches of the 21 teams participating in the U-19 male Spanish Championship 2012, were analysed. The variables considered in this study were: match score (TO requested when winning-balanced score or when losing); score difference (0-1 points, 2-3 points, 4 or more points); lost rallies (0-1 rallies, 2 rallies, ≥ 3 rallies); game period (initial moment of the set, final moment of the set); timeout effect (positive timeout effect and time out with no effect). The results showed that variables significantly associated with the TO request with different score (winning-balanced, losing) were: score difference, game period and timeout effect. Specifically, contributed positively to the association: TO request with winning-balanced score with the score difference of 0-1 points, with the final moments of the set and with the positive timeout effect; TO request with a losing score with the score difference of 4 or more points, in the initial moments of the set and with no effect of the timeout. This results could be taken into account in the process of team management in competition, in volleyball formative stages.

The aim of the study was to determine how different variables of the setting action affect to the block participation in high level male volleyball. The study sample was comprised of a total of 2742 game actions, divided into 1371 setting actions and 1371 block actions, corresponding to the observation of the 24 matches of the third stage of the World Male Volleyball Championship, absolute category. The dependent variable was block participation (zero or one blocker, two blockers, three blockers). The independent variables were: setting zone (excellent, acceptable, unacceptable), type of set (standing set, jump set), setting technique (overhand set, forearm set), set´s area (zone one, zone two, zone three, zone four, zone six) and tempo of set (first tempo, second tempo, third tempo). The result of this study showed that the variables setting zone, type of set, set’s area and tempo of set, were predictors of the block participation. Thus, the decision-making of the setter in the setting action as well as the type, area and tempo of set, has high relevance in game, affecting to the block participation of the opposing team.

The main objective of the research was to analyze the characteristics of the time-outs requested in the Spanish Championship of Regional Selections in 2010 (Under-14 and Under-16, male and female categories). To this end, 232 timeouts were analyzed, a game of each of the teams participating in the championship was collected. The variables considered in the study were: number of consecutive serves of the opposing team that run until the time-out was ordered, number of serves that are made until the team requesting the timeout gets the serve, points of difference between the teams at the moment the time-out was ordered and moment of the set in what the time-out was ordered. The results showed that: more than 64% of cases, the team orders the time-out when the opposing team pass two serves or less; in 75% of cases, the team that orders the time-out gets the serve when the opposing team spends two serves or less; 37% of time-outs were ordered with a difference of 2, 3 or 4 points, and 40% with a difference of 5 points or more. In addition, time-outs were distributed balanced in the different moments of the set, moment 1 or initial part of the set (34.5%), moment 2 or intermediate part of the set (34.1%) and moment 3 or final part of the set (31.5%).

In recent years, a number of quantitative methods have been identified and developed with the specific intent of assisting the objective analysis of athletic performance (Nelson & Groom, 2012). The main aim of this research was to clarify the importance of performance in game actions as determinant of match result in a sample of young volleyball male players. The study sample was composed of 74 male participants belonging to the Under-16 teams (M: 14.61; SD: .88) from the Extremadura Volleyball League in the 2010/2011 season. The studied variables were: performance in game actions (serve, defense, setting and spike) and match result (win/lost). FIVB Observational System (Coleman, 1975) has been the instrument for data recollection, it has been applied previously in numerous studies and is accepted as a valid tool for research community. The T-test for independent samples results showed statistically significant differences in performance of game actions: serve (F1,72= 3.86; p=.048; np2=.492), defense (F1,72=14.07; p<.001.; np2=.959), setting (F1,72=34.83; p<.001.; np2=1.00) and spike (F1,72=9.05 ; p=.004; np2=.84) between players from winner and loser teams. Our results coincide with previous studies that emphasize the importance of game actions in volleyball (Asterios et al., 2009). This analysis is important as it assists in the collection of performance information that can feedback athletes in an attempt to enhance their understanding and competitive performance (Maslovat & Franks, 2008) and also for talent identification and recruitment (Carling et al., 2005).

Bibliografía: p. 79-84