Coupling between muscle activities and muscle torques during horizontal-planar arm movements with direction reversal

dc.creatorAlmeida, GL
dc.creatorFreitas, SMSF
dc.creatorMarconi, NF
dc.date2006
dc.dateJUN
dc.date2014-11-16T00:24:30Z
dc.date2015-11-26T17:36:01Z
dc.date2014-11-16T00:24:30Z
dc.date2015-11-26T17:36:01Z
dc.date.accessioned2018-03-29T00:18:32Z
dc.date.available2018-03-29T00:18:32Z
dc.identifierJournal Of Electromyography And Kinesiology. Elsevier Sci Ltd, v. 16, n. 3, n. 303, n. 311, 2006.
dc.identifier1050-6411
dc.identifierWOS:000237996800010
dc.identifier10.1016/j.jelekin.2005.07.010
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/57334
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/57334
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/57334
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1285813
dc.descriptionIn this study we investigated the hypothesis that the simple set of rules used to explain the modulation of muscle activities during single-joint movements could also be applied for reversal movements of the shoulder and elbow joints. The muscle torques of both joints were characterized by a triphasic impulse. The first impulse of each joint accelerated the limb to the target and was generated by an initial burst of the muscles activated first (primary mover). The second impulse decelerated the limb to the target, reversed movement direction and accelerated the limb back to the initial position, and was generated by an initial burst of the muscles activated second (secondary movers). A third impulse, in each joint, decelerated the limb to the initial position due to the generation of a second burst of the primary movers. The first burst of the primary mover decreased abruptly, and the latency between the activation of the primary and secondary movers varied in proportion with target distances for the elbow, but not for the shoulder muscles. All impulses and bursts increased with target distances and were well coupled. Therefore, as predicted, the bursts of muscle activities were modulated to generate the appropriate level of muscle torque. (C) 2005 Elsevier Ltd. All rights reserved.
dc.description16
dc.description3
dc.description303
dc.description311
dc.languageen
dc.publisherElsevier Sci Ltd
dc.publisherOxford
dc.publisherInglaterra
dc.relationJournal Of Electromyography And Kinesiology
dc.relationJ. Electromyogr. Kinesiol.
dc.rightsfechado
dc.rightshttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dc.sourceWeb of Science
dc.subjectkinematics
dc.subjectkinetics
dc.subjectEMG
dc.subjectreversal movements
dc.subjectSingle-joint Movements
dc.subjectSpeed-insensitive Strategy
dc.subjectOrganizing Principles
dc.subjectVoluntary Movements
dc.subjectRapid Movements
dc.subjectInertial Load
dc.subjectDown-syndrome
dc.subjectElbow
dc.subjectIndividuals
dc.subjectActivation
dc.titleCoupling between muscle activities and muscle torques during horizontal-planar arm movements with direction reversal
dc.typeArtículos de revistas


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