2020
DOI: 10.1002/eng2.12253
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Proficiency‐based recruitment of muscle synergies in a highly perturbed walking task (slackline)

Abstract: In neurophysiology, a hypothesis under investigation relates to how neural modularity helps in learning of skills. Accordingly, we studied differences in muscle synergy (MS) organization at three different proficiency levels on a task more challenging than walking. Our study included slackline walking whereby the perturbations to evoke postural responses are generated by the participants rather than externally controlled. Furthermore, studying MS of individuals with different proficiency levels under such cons… Show more

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Cited by 10 publications
(10 citation statements)
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“…Stance phase biomechanics and coordination include the complex control of the torso, pelvis, hip, knee, and ankle during the dynamic movements of weight shift laterally and forward, as well as during the progression of the body center of mass across the foot, from the heel, mid-foot, to forefoot [ 72 ]. Users in the current study exhibited dyscoordination during the gait stance phase.…”
Section: Discussionmentioning
confidence: 99%
“…Stance phase biomechanics and coordination include the complex control of the torso, pelvis, hip, knee, and ankle during the dynamic movements of weight shift laterally and forward, as well as during the progression of the body center of mass across the foot, from the heel, mid-foot, to forefoot [ 72 ]. Users in the current study exhibited dyscoordination during the gait stance phase.…”
Section: Discussionmentioning
confidence: 99%
“…Moreover, in individuals without movement disorders, the muscle synergies remained similar when the same tasks were repeated and changed only when the task changed, supporting the task-related hypothesis ( Torres-Oviedo and Ting, 2010 ). Studies in intact participants have been unable to resolve the competition between these two hypotheses because the afferent drive through intact ascending tracts is modulated when the task is changed; therefore, there is always a neural component to task-based synergies that cannot be isolated ( Torres-Oviedo and Ting, 2010 ), ( Kutch and Valero-Cuevas, 2012 ), ( Singh et al, 2020a ), ( Singh et al, 2020b ). However, in the current study, the measurement of changes in muscle synergies under epidural stimulation without the restoration of sensory feedback allows us to isolate the neural effects from the task effects in muscle synergies.…”
Section: Discussionmentioning
confidence: 99%
“…The analysis of the muscle modules has become a more popular tool to describe the neuromotor control of multi-limb movement such as complicated tasks that require proficiency or gait after stroke [ 13 , 33 ]. For the analysis, many previous studies classified muscle modules into paretic and non-paretic sides [ 13 , 20 , 34 ].…”
Section: Discussionmentioning
confidence: 99%