The main purpose of this master was to establish whether the quality and repeatability of tandem stance with eyes closed dependent on warm–up protocol. Therefore this research includes 11 students. The measurements were completed four times (trial, control measurement, warm–up with motor task and dual warm–up). After specific warm – up protocol, the student complete tandem stance on force platform, where we monitored total velocity, sway velocity in anterior-posterior and medial-lateral direction center of pressure, amplitude center of pressure in anterior-posterior and medial-lateral direction. The results showed that dual-task warm–up protocol decreases quality od tandem stance with eyes closed, even though the motor task intensity was lower than expected (60-70% HR max). An effort in motor task warm–up in comparison to the dual task warm–up was not different statistically significant. Repeatability of chosen parameters was after different warm–up protocol similar. That's why we can conclude that additional cognitive task in warm–up does not enable efficient control and management of balance in tandem stance because the values of chosen parameters velocity and two amplitudes were increased (higher velocity and the amplitude of COP). We must otherwise underline that potential effects of dual warm–up could be confused, by replacing energy debt which occurred after less stable and economical stepping because of the dual cognitive task.
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