A method to simulate motor control strategies to recover from perturbations: Application to a stumble recovery during gait

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dc.contributor.authorFORNER-CORDERO, A.
dc.contributor.authorMarko Ackermann
dc.contributor.authorDE LIMA FREITAS, M.
dc.contributor.authorOrcidhttps://orcid.org/0000-0002-0252-5228
dc.date.accessioned2022-07-01T06:06:32Z
dc.date.available2022-07-01T06:06:32Z
dc.date.issued2011-09-03
dc.description.abstractPerturbations during human gait such as a trip or a slip can result in a fall, especially among frail populations such as the elderly. In order to recover from a trip or a stumble during gait, humans perform different types of recovery strategies. It is very useful to uncover the mechanisms of the recovery to improve training methods for populations at risk of falling. Moreover, human recovery strategies could be applied to implement controllers for bipedal robot walker, as an application of biomimetic design. A biomechanical model of the response to a trip during gait might uncover the control mechanisms underlying the different recovery strategies and the adaptation of the responses found during the execution of successive perturbation trials. This paper introduces a model of stumble in the multibody system framework. This model is used to assess different feedforward strategies to recover from a trip. First of all, normal gait patterns for the musculoskeletal system model are obtained by solving an optimal control problem. Secondly, the reference gait is perturbed by the application of forces on the swinging foot in different ways: as an instantaneous inelastic collision of the foot with an obstacle, as an impulsive horizontal force or using a force curve measured experimentally during gait perturbation experiments. The influence of the type of perturbation, the timing of the collision with respect to the gait cycle, as well as of the coefficient of restitution was investigated previously. Finally, in order to test the effects of different muscle excitation levels on the initial phases of the recovery response, several muscle excitations were added to selected muscles of the legs, thus providing a simulation of the recovery reactions. These results pave the way for future analysis and modeling of the control mechanisms of gait. © 2011 IEEE.
dc.description.firstpage7829
dc.description.lastpage7832
dc.identifier.citationFORNER-CORDERO, A.; ACKERMANN, M.; DE LIMA FREITAS, M. A method to simulate motor control strategies to recover from perturbations: Application to a stumble recovery during gait. Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS, p. 7829-7832, 2011.
dc.identifier.doi10.1109/IEMBS.2011.6091929
dc.identifier.urihttps://repositorio.fei.edu.br/handle/FEI/4532
dc.relation.ispartofProceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS
dc.rightsAcesso Restrito
dc.subject.otherlanguagegait control
dc.subject.otherlanguagegait simulation
dc.subject.otherlanguagerecovery strategies
dc.subject.otherlanguagestumble
dc.titleA method to simulate motor control strategies to recover from perturbations: Application to a stumble recovery during gait
dc.typeArtigo de evento
fei.scopus.citations9
fei.scopus.eid2-s2.0-84861714999
fei.scopus.subjectAnalysis and modeling
fei.scopus.subjectBiomechanical model
fei.scopus.subjectBiomimetic design
fei.scopus.subjectBipedal robot
fei.scopus.subjectCoefficient of restitution
fei.scopus.subjectControl mechanism
fei.scopus.subjectExcitation levels
fei.scopus.subjectFeedforward strategy
fei.scopus.subjectForce Curve
fei.scopus.subjectGait control
fei.scopus.subjectGait cycles
fei.scopus.subjectGait pattern
fei.scopus.subjectgait simulation
fei.scopus.subjectHorizontal forces
fei.scopus.subjectHuman gait
fei.scopus.subjectInelastic collision
fei.scopus.subjectInitial phasis
fei.scopus.subjectMotor control
fei.scopus.subjectMulti Body Systems
fei.scopus.subjectOptimal control problem
fei.scopus.subjectRecovery reactions
fei.scopus.subjectRecovery response
fei.scopus.subjectrecovery strategies
fei.scopus.subjectstumble
fei.scopus.subjectTraining methods
fei.scopus.updated2024-05-01
fei.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84861714999&origin=inward
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