Evidence map›Paper›PMID 31102839›Full record

ArticleClinical biomechanics (Bristol, Avon)2019

Trailing limb angle is a surrogate for propulsive limb forces during walking post-stroke.

Michael D Lewek, Gregory S Sawicki

Abstract read
In one paragraph

Article in Clinical biomechanics (Bristol, Avon), 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

21 citing papers in PubMed, 1 synthesis or guideline pooled it.

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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

2 authors.

Michael D LewekDivision of Physical Therapy, Department of Allied Health Sciences, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA. Electronic address: mlewek@med.unc.edu.
Gregory S SawickiGeorge W. Woodruff School of Mechanical Engineering and School of Biological Sciences, Georgia Institute of Technology, Atlanta, GA 30332-0405, USA.

Funding

NRI: Novel platform for rapid exploration of robotic ankle exoskeleton control stR01NR014756 · NINR · NORTH CAROLINA STATE UNIVERSITY RALEIGH · PI KAMPER, DEREK, SAWICKI, GREGORY STEPHEN · 2013 to 2017
$729k
Robotic Ankle to Restore Symmetry and Reduce Energy Cost of Walking Post-StrokeR21HD072588 · NICHD · NORTH CAROLINA STATE UNIVERSITY RALEIGH · PI SAWICKI, GREGORY STEPHEN · 2014 to 2015
$407k
NICHD NIH HHS R21 HD072588NINR NIH HHS R01 NR014756
6 · The paper itself

Abstract

backgroundPropulsive deficits following stroke have been attributed to reduced plantarflexion moments and a reduced trailing limb angle. We sought to determine the validity of the trailing limb angle as a surrogate measure of the anterior ground reaction force, as well as to determine the anatomical landmarks for the trailing limb angle that best approximate the orientation of the ground reaction force.

methodsForty-four participants with chronic stroke walked on a treadmill. At peak propulsion, we computed the trailing limb angle, the anterior orientation of the ground reaction force (the gold standard), and the hip extension angle for correlational analyses. Further, we compared the absolute error of the various trailing limb angle computations to determine which landmarks provided the most accurate representation of the anterior angle of the ground reaction force.

findingsFor the paretic and non-paretic limbs, the anterior angle of the ground reaction force was related to all measures of trailing limb angle as well as the peak propulsive force. The hip extension angle, however, was not related to the angle of the ground reaction force. Only the choice of distal landmarks significantly influenced the error between trailing limb angle and the anterior angle of the ground reaction force.

interpretationThese data suggest that measuring the sagittal plane orientation of the entire limb serves as a suitable surrogate for measuring the anterior angle of the ground reaction force. Although greater errors were observed with kinematic measures of orientation, the magnitude of the error is likely within acceptable ranges.

Indexed as

GaitWalkingAdultAgedBiomechanical PhenomenaExercise TestExtremitiesFemaleHumansMaleMiddle AgedParesisStress, MechanicalStrokeStroke RehabilitationGaitMechanicsPosturePropulsionStroke

Identifiers

PMID31102839
PMCPMC6635006

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Registered trials

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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.