Evidence map›Paper›PMID 30528553›Full record

ArticleJournal of biomechanics2019

Merged plantarflexor muscle activity is predictive of poor walking performance in post-stroke hemiparetic subjects.

Lydia G Brough, Steven A Kautz, Mark G Bowden, Chris M Gregory, Richard R Neptune

Open access · greenAbstract read
In one paragraph

Article in Journal of biomechanics, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 1 pooled it
6.4field-weighted citation impact, top 4% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

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.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

18 citing papers in PubMed, 1 synthesis or guideline pooled it, 33 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Heteronymous feedback from quadriceps onto soleus in stroke survivors.Journal of neuroengineering and rehabilitation · 2025
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 2 institutions in 1 country.

Lydia G BroughWalker Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX, USA.
Steven A KautzRalph H Johnson VA Medical Center, Charleston, SC, USA; Department of Health Sciences & Research and Division of Physical Therapy, Medical University of South Carolina, Charleston, SC, USA.
Mark G BowdenRalph H Johnson VA Medical Center, Charleston, SC, USA; Department of Health Sciences & Research and Division of Physical Therapy, Medical University of South Carolina, Charleston, SC, USA.
Chris M GregoryRalph H Johnson VA Medical Center, Charleston, SC, USA; Department of Health Sciences & Research and Division of Physical Therapy, Medical University of South Carolina, Charleston, SC, USA.
Richard R NeptuneWalker Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX, USA. Electronic address: rneptune@mail.utexas.edu.
Medical University of South Carolina · USWalker (United States) · US

Funding

Treating Depression and Enhancing Locomotor Recovery Post-strokeP20GM109040 · NIGMS · MEDICAL UNIVERSITY OF SOUTH CAROLINA · PI KAUTZ, STEVEN A. · 2014 to 2024
$23.5M
The effects of impaired post-stroke coordination and motor pathway integrity on mobility performanceI01RX001935 · VA · RALPH H JOHNSON VA MEDICAL CENTER · PI KAUTZ, STEVEN A. · 2016 to 2019
–
NIGMS NIH HHS P20 GM109040RRD VA I01 RX001935
6 · The paper itself

Abstract

Stroke is the leading cause of long-term disability and individuals post-stroke often experience impaired walking ability. The plantarflexor (PF) muscles are critical to walking through their contributions to the ground reaction forces and body segment energetics. Previous studies have shown muscle activity during walking can be grouped into co-excited muscle sets, or modules. Improper co-activation, or merging of modules, is a common impairment in individuals post-stroke. The purpose of this study was to determine the influence of merged PF modules on walking performance in individuals post stroke by examining balance control, body support and propulsion, and walking symmetry. Muscle modules were identified using non-negative matrix factorization to classify subjects as having an independent or merged PF module. The merged group had decreased balance control with a significantly higher frontal plane whole-body angular momentum than both the independent and control groups, while the independent and control groups were not significantly different. The merged group also had higher paretic braking and nonparetic propulsion than both the independent and control groups. These results remained when comparisons were limited to subjects who had the same number of modules, indicating this was not a general effect due to subjects with merged PF having fewer modules. It is likely that a merged PF module is indicative of general PF dysfunction even when some activation occurs at the appropriate time. These results suggest an independent PF module is critical to walking performance, and thus obtaining an independent PF module should be a crucial aim of stroke rehabilitation.

Indexed as

WalkingFemaleFootHumansMaleMiddle AgedMuscle, SkeletalParesisStrokeBiomechanicsGaitMuscle modulesRehabilitationSynergies

Identifiers

PMID30528553
PMCPMC6310645
OpenAlexW2901096025

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.