Abstract
The purpose of this study was to investigate changes in reaction time of elite volleyball players during a game. Fourteen volleyball players participated in the study. Reaction time was measured using the Optojump system. In addition, blood lactate concentration was assessed to monitor physiological load during the game. All measurements were performed during a pre-game test and during sets 1, 2, 3 and 4. Reaction time during set 1 decreased significantly by 13,3 % compared with pre-game values, from 600 ms during the pre-game test to 520 ms during set 1 (p<0,05). Blood lactate concentration increased significantly during set 1, 2, 3 and 4 compared with pre-game conditions (p<0,05). Reaction time stays in the first phase of its changes pattern and elite volleyball players do not reach psychomotor fatigue threshold throughout the game.
Highlights
The ability to maintain psychomotor performance during a game is one of the most important aspect in sport competition (Chmura et al, 2010)
We focused on reaction time (RT) changes and blood lactate concentration (LA) during the game
Reaction time The repeatedmeasures analysis of variance (RMANOVA) revealed that volleyball game had an effect on RT
Summary
The ability to maintain psychomotor performance during a game is one of the most important aspect in sport competition (Chmura et al, 2010). Most studies focused on the effect of exercise on components of psychomotor performance in laboratory settings and usually were performed in post-exercise conditions (Coles et al, 2008; Hillman et al, 2003; Kamijo et al, 2007; Kjaer, 1989; Themanson et al, 2006; Tomporowski, 2003). Those experiments aimed at simple cognitive tasks e.g. choice reaction time, visual search, which are basic components of complex decisions and actions performed by players during the game. Competition and training require participants to perform activities of moderate to high intensities, with speed and accuracy (Chmura et al, 2010) and substantially affect athletes' motor abilities (Aune et al, 2008)
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