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Please use this identifier to cite or link to this item: http://hdl.handle.net/1843/41651
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dc.creatorDaniela Virgínia Vazpt_BR
dc.creatorBruna Silva Avelarpt_BR
dc.creatorRenan Alves Resendept_BR
dc.date.accessioned2022-05-13T17:50:08Z-
dc.date.available2022-05-13T17:50:08Z-
dc.date.issued2019-
dc.citation.volume64pt_BR
dc.citation.spage171pt_BR
dc.citation.epage180pt_BR
dc.identifier.doihttps://doi.org/10.1016/j.humov.2019.01.012pt_BR
dc.identifier.issn0167-9457pt_BR
dc.identifier.urihttp://hdl.handle.net/1843/41651-
dc.description.resumoAttentional focus affects performance and learning of motor tasks. An external attentional focus (on the effects of movement) can lead to more efficient and effective movements compared to an internal focus (on body movement itself). According to the “constrained action hypothesis”, an external focus facilitates fast and reflexive movement control while an internal focus leads to disruption of automatic coordination processes. Such disruption should be apparent in the complexity of movement. In this study, multiscale entropy measures were used to investigate if the external focus is related to superior coordination complexity compared to internal focus. Twenty participants were divided in two groups that balanced over an unstable platform in fourteen trials over two days, either with internal or external focus of attention instructions, followed by seven retention trials on the third day. Multiscale entropy measures were used to quantify complexity of motions of the platform, the participant, and the composite of participant and platform motions. Results were contrary to expectations. For the external focus group, despite better overall performance, multiscale entropy values of participant and composite motions were lower in some scales compared to the internal focus group, especially in the first and last days. This may be consistent with previous findings that predictability increases during learning of a balance task. Results also indicate the need to identify the correct physiological interpretation of single or multiscale entropy measures. Further investigation is needed to establish if entropy differences are causally related to performance and learning advantages of the external focus.pt_BR
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superiorpt_BR
dc.languageengpt_BR
dc.publisherUniversidade Federal de Minas Geraispt_BR
dc.publisher.countryBrasilpt_BR
dc.publisher.departmentEEF - DEPARTAMENTO DE FISIOTERAPIApt_BR
dc.publisher.initialsUFMGpt_BR
dc.relation.ispartofHuman Movement Sciencept_BR
dc.rightsAcesso Restritopt_BR
dc.subjectMotor controlpt_BR
dc.subjectAttentional focuspt_BR
dc.subjectComplexitypt_BR
dc.subject.otherCoordenação motorapt_BR
dc.subject.otherAtençãopt_BR
dc.subject.otherDesempenho psicomotorpt_BR
dc.subject.otherAprendizagem motorapt_BR
dc.titleEffects of attentional focus on movement coordination complexitypt_BR
dc.typeArtigo de Periódicopt_BR
dc.url.externahttps://www.sciencedirect.com/science/article/pii/S0167945717303597#f0025pt_BR
dc.identifier.orcidhttp://orcid.org/0000-0003-0470-6361pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-1609-3278pt_BR
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