Comportamento visual e qualidade da tomada de decisão no voleibol

Henrique De Oliveira Castro,Gibson Moreira Praça,Pablo Juan Greco,Gustavo De Conti Teixeira Costa,Gustavo Ferreira Pedrosa

doi:10.5007/1980-0037.2016v18n6p638

Abstract

DOI: http://dx.doi.org/10.5007/1980-0037.2016v18n6p638 This study aims to verify the visual behavior using the analysis of both quantity and duration of visual fixation and the quality of the DM in volleyball players and athletes from other sports in extreming attacking (EA), cental attack (CA), setting (SE) and blocking (BL) situations. The visual behavior was analyzed during the evaluation of volleyball scenes with an eye-tracking system. The first decision the volunteer voiced was determined as his solution for the scene presented and it was used for analyzing the DM quality. For the quantity of visual fixations, the independent t-test was used to compare groups in the following situtations, EA, SE and BL. For analyzing the quality of DM, the chi-square test of proportions was used. Moreover, for the analysis of the duration and number of visual fixations, the independent t test was addopet (or Mann-Whitney test when some of the assumptions were not met for parametric analysis). Significantly higher values were observed on duration of visual fixations in athletes from other sports comparing to volleyball players at CA (p = 0.042). The DM were significantly different in EA (p = 0.024) and CA (p = 0.001) between groups, showing higher frequency of correct answers for the volleyball players. We conclude that volleyball players perform faster fixations in situations of CA and take more correct decisions in attacking situation (EA and CA) compared to athletes from other sports.

Highlights

The analysis in volleyball that aimed to determine the factors that affect the performance in an athlete or in a team have highlighted the following parameters, technical, tactical[1,2], decision-making (DM)[3], psychological factors, knowledge and other
The differences on the duration of visual fixation in each situation for the two groups are shown in Table 3 and are presented in average and standard deviation
Regarding the visual behavior and the analyzis of the number of visual fixations, the results of this study revealed that there were no significant differences when the groups of volleyball players and athletes from other sports were compared in all game situations

Summary

Introduction

The analysis in volleyball that aimed to determine the factors that affect the performance in an athlete or in a team have highlighted the following parameters, technical, tactical[1,2], decision-making (DM)[3], psychological factors, knowledge and other. Volleyball is considered a strategic and tactical sport where relations between the DM and the performance take a particular importance to understand the variables that influence the game[4], providing perfect tasks for the processes underlying the anticipation of action effects, in which the athlete’s previous experience stands out as a determining factor[5]. The function of attention consisits in optimizing the performance of visual tasks, lead the focus for relevant points and guide the sporting behavior to factors that enable success in the task solution[9]. A variety of signals arrive to the players, in other words, a large amount of information about the environment or the task, should be taking into account when they make a decision[10]. The visual system acquires great importance in sports, as participants and objects share the same space in high speed and in many occasions[7]

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Conclusion