Evidence map›Paper›PMID 23445913›Full record

ArticleJournal of musculoskeletal & neuronal interactions2013

Electrical impedance alterations in the rat hind limb with unloading.

J Li, A J Spieker, G D Rosen, S B Rutkove

Abstract read
In one paragraph

Article in Journal of musculoskeletal & neuronal interactions, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
–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

20 citing papers in PubMed.

  1. Article
  2. Review
  3. Article
  4. Article
  5. Review
  6. Review
  7. Article
  8. Article
  9. Electrical Impedance Methods in Neuromuscular Assessment: An Overview.Cold Spring Harbor perspectives in medicine · 2019
    Review
  10. Article
  11. Article
  12. Article
  13. Article
  14. Electrical Impedance Myography and Its Applications in Neuromuscular Disorders.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2017
    Review
  15. Article
  16. Article
  17. Article
  18. The effect of profound dehydration on electrical impedance of mouseskeletal muscle.Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference · 2014
    Article
  19. Article
  20. 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.

J LiDepartment of Neurology, Beth Israel Deaconess Medical Center, Harvard Medical School,USA.
A J Spieker
G D Rosen
S B Rutkove

Funding

Electrical Impedance Myography in an Animal ModelR01NS055099 · NINDS · BETH ISRAEL DEACONESS MEDICAL CENTER · PI RUTKOVE, SEWARD B. · 2007 to 2022
$5.1M
NINDS NIH HHS R01 NS055099NINDS NIH HHS R01NS055099
6 · The paper itself

Abstract

objectivesMethods are needed for quantifying muscle deconditioning due to immobilization, aging, or spaceflight. Electrical impedance myography (EIM) is one technique that may offer easy-to-follow metrics. Here, we evaluate the time course and character of the change in single- and multi-frequency EIM parameters in the hind-limb suspension model of muscle deconditioning in rats.

methodsSixty-two rats were studied with EIM during a two-week period of hind limb unloading followed by a two-week recovery period. Random subsets of animals were sacrificed at one-week time intervals to measure muscle fiber size.

resultsSignificant alterations were observed in nearly all impedance parameters. The 50 kHz phase and multi-frequency phase-slope, created by taking the slope of a line fitted to the impedance values between 100-500 kHz, appeared most sensitive to disuse atrophy, the latter decreasing by over 33.0±6.6% (p<0.001), a change similar to the maximum reduction in muscle fiber size. Impedance alterations, however, lagged changes in muscle fiber size.

conclusionsEIM is sensitive to disuse change in the rat, albeit with a delay relative to alterations in muscle fiber size. Given the rapidity and simplicity of EIM measurements, the technique could prove useful in providing a non-invasive approach to measuring disuse change in animal models and human subjects.

Indexed as

AnimalsElectric ImpedanceHindlimb SuspensionMaleRandom AllocationRatsRats, Wistar

Identifiers

PMID23445913
PMCPMC3984464

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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.