Evidence map›Paper›PMID 34761377›Full record

ArticleJournal of anatomy2022

Heterogeneity in form and function of the rat extensor digitorum longus motor unit.

Roger W P Kissane, Samit Chakrabarty, Graham N Askew, Stuart Egginton

Open access · hybridAbstract read
In one paragraph

Article in Journal of anatomy, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
0.3field-weighted citation impact, top 49% 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

4 citing papers in PubMed, 3 citations in OpenAlex.

  1. Article
  2. How temperature tunes muscle mechanics during eccentric contractions.American journal of physiology. Cell physiology · 2026
    Article
  3. Article
  4. Article
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

4 authors at 2 institutions in 1 country.

Roger W P KissaneDepartment of Musculoskeletal & Ageing Science, University of Liverpool, Liverpool, UK.ORCID 0000-0001-9385-2584
Samit ChakrabartySchool of Biomedical Sciences, University of Leeds, Leeds, UK.ORCID 0000-0002-4389-8290
Graham N AskewSchool of Biomedical Sciences, University of Leeds, Leeds, UK.ORCID 0000-0003-1010-4439
Stuart EggintonSchool of Biomedical Sciences, University of Leeds, Leeds, UK.ORCID 0000-0002-3084-9692
University of Leeds · GBUniversity of Liverpool · GB

Funding

British Heart Foundation PG/14/15/30691
6 · The paper itself

Abstract

The motor unit comprises a variable number of muscle fibres that connect through myelinated nerve fibres to a motoneuron (MN), the central drivers of activity. At the simplest level of organisation there exist phenotypically distinct MNs that activate corresponding muscle fibre types, but within an individual motor pool there typically exists a mixed population of fast and slow firing MNs, innervating groups of Type II and Type I fibres, respectively. Characterising the heterogeneity across multiple levels of motor unit organisation is critical to understanding changes that occur in response to physiological and pathological perturbations. Through a comprehensive assessment of muscle histology and ex vivo function, mathematical modelling and neuronal tracing, we demonstrate regional heterogeneities at the level of the MN, muscle fibre type composition and oxygen delivery kinetics of the rat extensor digitorum longus (EDL) muscle. Specifically, the EDL contains two phenotypically distinct regions: a relatively oxidative medial and a more glycolytic lateral compartment. Smaller muscle fibres in the medial compartment, in combination with a greater local capillary density, preserve tissue O

Indexed as

Muscle Fibers, SkeletalMuscle, SkeletalAnimalsCapillariesMotor NeuronsRatscapillary supplymotoneuronoxygen modellingskeletal musclework loop

Identifiers

PMID34761377
PMCPMC8930811
OpenAlexW3214408764

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.