摘要：The main purpose of this research was the comparison of the effect of feedback Frequency Reduction procedures (bandwidth, summary and faded) on the performance improvement and error detection capability of force production task. The necessary data for the present research was gathered in 4 phases: pre-test, acquisition, retention and transfer. In pre-test phase, the subjects were supposed to produce a force equivalent to 20% of maximum force in a 10-trial block. The acquisition phase consisted of seven 10-trial blocks in which 30% of maximum force in were used as a target force. In retention phase in the next 24hours, production force procedure based on 30% of maximum force was used and in transfer phase, 40% of maximum force was used as the target force. For Data analysis, one-way analysis of variance and one-way analysis of co-variance in significant level P≤0.05 for spss-11.5 software were used. Results revealed that there was no significant statistical difference in accuracy variable, consistency variable, and error estimation accuracy variable of production force in acquisition, retention and transfer phase in three kinds of these manipulations, and they (manipulations) led to the improvement of learning and error detection capability.
