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The Effect of Precued Parameters on Reaction Time of a Force Production Task

Reaction lime (RT) is a very important factor in skilled performance. Precue is one of the effective factors on RT. The results of studies on this factor have shown a reduction in RT as tine function of precue; but the majority of these researches have been performed on aiming tasks. The present research was performed to lest the hypothesis that RT in a force production task is a function of precued parameters. A mixed 3 -functional design was performed on 16 (8 male and 8 female) volunteers: non - athlete, right - handed students aged between 20 and 25. The subjects per formed a total of 2400 trials over 5 sessions on successive days (4 blocks out of 120 block-trials per session) under different numbers of precue (0-3) using parameter precuing apparatus. This task required the production of defined isometric force (3 or 6 kg) toward inside or outside, with right or left upper limb acting as quickly and accurately as possible after displaying precue(s) and stimulus. The subjectsʹ RT in different levels of independent variables was analyzed using 3-factor experiment (number of precued parcuneters* gender * session) with repeated measure ments on 2 of these factors (number of precued parameters and session). The results indicated a significant reduction in RT with an increase in the number of precued parameters (P<0.05). The main effects of gender and session were not significant (P>0.05), but all of the interactions were significant (P<0.05).