Effect of bandwidth knowledge of results on the learning of a grip force control task |
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Authors: | Ugrinowitsch Herbert Ugrinowitsch Alessandra Aguilar Coca Benda Rodolfo Novellino Tertuliano Ivan Wallan |
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Affiliation: | Escola de Educa??o Física, Fisioterapia e Terapia Occupacional, Universidade Federal de Minas Gerais, Brazil. herbertu@ufmg.br |
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Abstract: | An experiment was conducted to investigate the persistence of the effect of "bandwidth knowledge of results (KR)" manipulated during the learning phase of performing a manual force-control task. The experiment consisted of two phases, an acquisition phase with the goal of maintaining 60% maximum force in 30 trials, and a second phase with the objective of maintaining 40% of maximum force in 20 further trials. There were four bandwidths of KR: when performance error exceeded 5, 10, or 15% of the target, and a control group (0% bandwidth). Analysis showed that 5, 10, and 15% bandwidth led to better performance than 0% bandwidth KR at the beginning of the second phase and persisted during the extended trials. |
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