ArticleEuropean journal of applied physiology2014
Muscle synergies in preparation to a step made with and without obstacle.
Article in European journal of applied physiology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
4 citing papers in PubMed.
- Aging effect on muscle synergies in stepping forth during a forward perturbation.European journal of applied physiology · 2017Article
- Alterations of Muscle Activation Pattern in Stroke Survivors during Obstacle Crossing.Frontiers in neurology · 2017Article
- Muscle synergies underlying control of taking a step during support surface translation.European journal of applied physiology · 2016Article
- Muscle synergies in preparation to a step made with obstacle in elderly individuals.Journal of neuroengineering and rehabilitation · 2015Article
Corrections and comments
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Authors and funding
4 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeTo study multi-muscle synergies during preparation in making a step (self-paced level stepping vs. obstacle crossing stepping).
methodsThe uncontrolled manifold hypothesis was used to explore the organization of leg and trunk muscles into groups (M-modes) and co-variation of M-mode involvement (M-mode synergies) during stepping tasks. Subjects performed two tasks: (1) making a comfortable step from quiet stance (STCS), (2) stepping over an obstacle of 15% body height from quiet stance, STOS. Electromyographic (EMG) signals of 10 postural muscles were recorded and analyzed. Principal component analysis was used to identify M-modes within the space of integrated indices of muscle activity. Variance in the M-mode space across stepping trials was partitioned into two components, one that did not affect the average value of center of pressure (COP) shift and the other that did. An index (ΔV) corresponding to the normalized difference between two components of variance was computed.
resultsUnder the two tasks, strong multi-M-mode synergies stabilizing trajectories of the COP in the anterior-posterior direction were found. Despite the significant differences in the COP shifts and EMG patterns of postural adjustments, the synergies showed only minor differences across the conditions.
conclusionsThese findings demonstrate the robustness of multi-M-mode synergies across different manners of making a step.
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Registered trials
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