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Quadriceps arthrogenic muscle inhibition: the effects of experimental knee joint effusion on motor cortex excitability

Overview of attention for article published in Arthritis Research & Therapy, December 2014
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  • In the top 25% of all research outputs scored by Altmetric
  • High Attention Score compared to outputs of the same age (93rd percentile)
  • High Attention Score compared to outputs of the same age and source (94th percentile)

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32 X users
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Title
Quadriceps arthrogenic muscle inhibition: the effects of experimental knee joint effusion on motor cortex excitability
Published in
Arthritis Research & Therapy, December 2014
DOI 10.1186/s13075-014-0502-4
Pubmed ID
Authors

David Andrew Rice, Peter John McNair, Gwyn Nancy Lewis, Nicola Dalbeth

Abstract

IntroductionMarked weakness of the quadriceps muscles is typically observed following injury, surgery or pathology affecting the knee joint. This is partly due to ongoing neural inhibition that prevents the central nervous system from fully activating the quadriceps, a process known as arthrogenic muscle inhibition (AMI). This study aimed to further investigate the mechanisms underlying AMI by exploring the effects of experimental knee joint effusion on quadriceps corticomotor and intracortical excitability.MethodsSeventeen healthy volunteers participated in this study. Transcranial magnetic stimulation was used to measure quadriceps motor evoked potential area, short-interval intracortical inhibition, intracortical facilitation and cortical silent period duration before and after experimental knee joint effusion. Joint effusion was induced by the intraarticular infusion of dextrose saline into the knee.ResultsThere was a significant increase in quadriceps motor evoked potential area following joint infusion, both at rest (P¿=¿0.01) and during voluntary muscle contraction (P¿=¿0.02). Cortical silent period duration was significantly reduced following joint infusion (P¿=¿0.02). There were no changes in short interval intracortical inhibition or intracortical facilitation over time (all P¿>¿0.05).ConclusionsThe results of this study provide no evidence for a supraspinal contribution to quadriceps AMI. Paradoxically, but consistent with previous observations in patients with chronic knee joint pathology, quadriceps corticomotor excitability increased after experimental knee joint effusion. The increase in quadriceps corticomotor excitability may be at least partly mediated by a decrease in gamma-aminobutyric acid (GABA)-ergic inhibition within the motor cortex.

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X Demographics

The data shown below were collected from the profiles of 32 X users who shared this research output. Click here to find out more about how the information was compiled.
Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 215 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
United States 2 <1%
Germany 1 <1%
Canada 1 <1%
Unknown 211 98%

Demographic breakdown

Readers by professional status Count As %
Student > Master 36 17%
Researcher 29 13%
Student > Bachelor 22 10%
Student > Doctoral Student 17 8%
Other 14 7%
Other 47 22%
Unknown 50 23%
Readers by discipline Count As %
Medicine and Dentistry 55 26%
Nursing and Health Professions 38 18%
Sports and Recreations 28 13%
Neuroscience 14 7%
Engineering 6 3%
Other 14 7%
Unknown 60 28%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 22. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 16 June 2021.
All research outputs
#1,703,549
of 25,371,288 outputs
Outputs from Arthritis Research & Therapy
#240
of 3,380 outputs
Outputs of similar age
#22,656
of 368,276 outputs
Outputs of similar age from Arthritis Research & Therapy
#3
of 58 outputs
Altmetric has tracked 25,371,288 research outputs across all sources so far. Compared to these this one has done particularly well and is in the 93rd percentile: it's in the top 10% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 3,380 research outputs from this source. They typically receive more attention than average, with a mean Attention Score of 9.2. This one has done particularly well, scoring higher than 92% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 368,276 tracked outputs that were published within six weeks on either side of this one in any source. This one has done particularly well, scoring higher than 93% of its contemporaries.
We're also able to compare this research output to 58 others from the same source and published within six weeks on either side of this one. This one has done particularly well, scoring higher than 94% of its contemporaries.