Characterization of torque generating properties of ankle plantar flexor muscles in ambulant adults with cerebral palsy.

Rasmus Feld Frisk, Jakob Lorentzen, Lee Barber, Jens Bo Nielsen

Abstract read

In one paragraph

Article in European journal of applied physiology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it

0cells of the map it votes in

7citing papers in PubMed

1.5field-weighted citation impact, top 19% of its field

1 · What the graph read from it

What it found

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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.

2 · The registry

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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

7 citing papers in PubMed, 10 citations in OpenAlex.

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Article
Ballistic strength training in adults with cerebral palsy may increase rate of force development in plantar flexors, but transition to walking remains unclear: a case series.BMC sports science, medicine & rehabilitation · 2022
Article
The Contribution of Decreased Muscle Size to Muscle Weakness in Children With Spastic Cerebral Palsy.Frontiers in neurology · 2021
Article
Increased Ankle Plantar Flexor Stiffness Is Associated With Reduced Mechanical Response to Stretch in Adults With CP.Frontiers in bioengineering and biotechnology · 2021
Article
Stretching Interventions in Children With Cerebral Palsy: Why Are They Ineffective in Improving Muscle Function and How Can We Better Their Outcome?Frontiers in physiology · 2020
Review
Impact of Altered Gastrocnemius Morphometrics and Fascicle Behavior on Walking Patterns in Children With Spastic Cerebral Palsy.Frontiers in physiology · 2020
Article

4 · The record

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5 · Who and what money

Authors and funding

4 authors at 3 institutions in 2 countries.

Rasmus Feld FriskDepartment of Neuroscience, University of Copenhagen, Blegdamsvej 3, 2200, Copenhagen N, Denmark. frisk@sund.ku.dk.ORCID http://orcid.org/0000-0003-4878-3238

Jakob LorentzenDepartment of Neuroscience, University of Copenhagen, Blegdamsvej 3, 2200, Copenhagen N, Denmark.

Lee BarberSchool of Health, Medical and Allied Sciences, Central Queensland University, Bundaberg, Australia.

Jens Bo NielsenDepartment of Neuroscience, University of Copenhagen, Blegdamsvej 3, 2200, Copenhagen N, Denmark.

University of Copenhagen · DKRoskilde University · DKThe University of Queensland · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeWeakness of plantar flexor muscles is related to reduced push-off and forward propulsion during gait in persons with cerebral palsy (CP). It has not been clarified to what an extent altered muscle contractile properties contribute to this muscle weakness. Here, we investigated the torque generating capacity and muscle fascicle length in the triceps surae muscle throughout ankle range of motion (ROM) in adults with CP using maximal single muscle twitches elicited by electrical nerve stimulation and ultrasonography.

methodsFourteen adults with CP (age 36, SD 10.6, GMFCS I-III) and 17 neurological intact (NI) adults (age 36, SD 4.5) participated. Plantar flexor torque during supramaximal stimulation of the tibial nerve was recorded in a dynamometer at 8 ankle angles throughout ROM. Medial gastrocnemius (MG) fascicle length was tracked using ultrasonography.

resultsAdults with CP showed reduced plantar flexor torque and fascicle shortening during supramaximal stimulation throughout ROM. The largest torque generation was observed at the ankle joint position where the largest shortening of MG fascicles was observed in both groups. This was at a more plantarflexed position in the CP group.

conclusionReduced torque and fascicle shortening during supramaximal stimulation of the tibial nerve indicate impaired contractile properties of plantar flexor muscles in adults with CP. Maximal torque was observed at a more plantarflexed position in adults with CP indicating an altered torque-fascicle length/ankle angle relation. The findings suggest that gait rehabilitation in adults with CP may require special focus on improvement of muscle contractility.

Indexed as

AdultAnkleCerebral PalsyFasciaFemaleGaitHumansMaleMiddle AgedMuscle ContractionMuscle, SkeletalRange of Motion, ArticularTorqueCerebral palsyContractile propertiesPlantar flexorsTorque generation

Identifiers

PMID30778762

DOI10.1007/s00421-019-04102-z

OpenAlexW2915828552

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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.