Bandwidth knowledge of results persists on motor skills acquisition


  • Madson Pereira Cruz Universidade Federal de Minas Gerais
  • Rodolfo Novellino Benda
  • Maria Flávia Soares Pinto Carvalho
  • Guilherme Menezes Lage
  • Maria Teresa Cattuzzo
  • Herbert Ugrinowitsch Universidade Federal de Minas Gerais



The aim of this study was to investigate the short and long-term effects of the bandwidth KR in learning of the absolute and relative dimensions of a motor skill. Twenty-two undergraduate students divided into two groups: G15 who received KR when the relative error exceeded 15%; and G0, with KR after every trial. The study consisted of an acquisition phase, and the volunteers practiced 100 trials with a target time of 850 ms and relative of 22.2%, 44.4% and 33.3% between the first and second, second and third, third and fourth keys, respectively. This phase, KR related to relative time (relative error) was provided according to the group. KR of total target time was available to both groups after all trials. Three retention tests with ten trials were conducted 10 minutes, 24 hours and one week after the acquisition phase. The results showed that G15 had a smaller relative error than G0. This study allows concluding that bandwidth KR in relation relative time error showed its effects in the consistency of relative time. These effects persisted even after seven days after the acquisition phase in a delayed retention test.

Author Biography

Herbert Ugrinowitsch, Universidade Federal de Minas Gerais

  • Universidade Federal de Minas Gerais
  • Escola de Educação Física, Fisioterapia e Terapia Ocupacional
  • Professor Associado do Departamento de Esportes da UFMG






Original Article

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