title: Effect of bandwidth knowledge of results on the learning of a grip force control task.
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.
authors.affiliation: Escola de Educação Física, Fisioterapia e Terapia Occupacional, Universidade Federal de Minas Gerais, Brazil. herbertu@ufmg.br
authors.forename: Herbert
authors.initials: H
authors.lastname: Ugrinowitsch
authors.forename: Alessandra Aguilar Coca
authors.initials: AA
authors.lastname: Ugrinowitsch
authors.forename: Rodolfo Novellino
authors.initials: RN
authors.lastname: Benda
authors.forename: Ivan Wallan
authors.initials: IW
authors.lastname: Tertuliano
mesh_terms: D000328:Adult; D005260:Female; D006040:Goals; D018737:Hand Strength; D006801:Humans; D007721:Knowledge of Results, Psychological; D008297:Male; D009048:Motor Skills; D053581:Muscle Strength Dynamometer; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation; D014163:Transfer, Psychology; D055815:Young Adult