Evidence map›Paper›PMID 17641910›Full record

ArticleEuropean journal of applied physiology2007

Impact of repeated bouts of eccentric exercise on myogenic gene expression.

Andreas Costa, Hicham Dalloul, Hargita Hegyesi, Peter Apor, Zsolt Csende, Levente Racz, Mark Vaczi, Jozsef Tihanyi

Abstract read
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In one paragraph

Article in European journal of applied physiology, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
2.4field-weighted citation impact, top 11% 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

21 citing papers in PubMed, 54 citations in OpenAlex.

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  6. Changes in Pre- and Post-Electroconvulsive Therapy Serum Myostatin Levels in Patients with Treatment Resistant Depression.Clinical psychopharmacology and neuroscience : the official scientific journal of the Korean College of Neuropsychopharmacology · 2019
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  14. Neural adaptations to electrical stimulation strength training.European journal of applied physiology · 2011
    Review
  15. Excitation-transcription coupling in skeletal muscle: the molecular pathways of exercise.Biological reviews of the Cambridge Philosophical Society · 2011
    Review
  16. Article
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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

8 authors at 1 institution in 1 country.

Andreas CostaDepartment of Biomechanics, Faculty of Physical Education and Sport Sciences, Semmelweis University, Budapest, Hungary.
Hicham Dalloul
Hargita Hegyesi
Peter Apor
Zsolt Csende
Levente Racz
Mark Vaczi
Jozsef Tihanyi
Semmelweis University · HU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Evidence indicates that repeated-bouts of eccentric exercise (EE) do not exacerbate the extent of muscle damage indices, as compared to a single-bout. We hypothesized that molecular adaptations, under repeated-bouts of EE, would include suppression of muscle repair inhibitory factors such as myostatin and up-regulation of muscle repair positive regulatory factors such as myogenic regulatory factors (MRFs). Fifteen males were recruited for this study. The exercise group (n=9) successfully completed six sets of 15 reps of maximum voluntary eccentric contractions, for six consecutive days, using a dynamometer (Multicont-II). Blood and muscle biopsy samples were obtained from each subject 1 week prior to exercise, 2 days post the first training session, and 24 h after the last training session. Gene expression levels were determined using real-time RT-PCR. Blood samples were analyzed for creatine kinase (CK) and lactate-dehydrogenase (LDH) activity. Repeated-bouts of EE induced a large down-regulation of myostatin mRNA (-73%) which persisted throughout the study. The responses of MRFs were mild. At day 3 only myogenin increased significantly (1.9 fold) while MyoD decreased by 45%. Surprisingly, at day 7, despite the presence of muscle damage indices, all MRFs returned to the pre-exercise levels. The results of the present study showed that repeated-bouts of EE, for six consecutive days, dramatically decreased Myostatin mRNA expression but impaired the expression patterns of MRFs such that, with the exception of myogenin that showed a moderate non-sustained increase, MyoD and MYf5 response was minimal.

Indexed as

AdultCell DifferentiationCell ProliferationCreatine KinaseDNA, ComplementaryExerciseGene ExpressionHumansKi-67 AntigenL-Lactate DehydrogenaseMaleMuscle ContractionMuscle, SkeletalMuscle StrengthMyoD ProteinMyogenic Regulatory Factor 5Creatine KinaseDNA, ComplementaryKi-67 AntigenL-Lactate DehydrogenaseMSTN protein, humanMYF5 protein, humanMyoD ProteinMyogenic Regulatory Factor 5Myogenic Regulatory FactorsMyostatinp21-Activated KinasesRNA, MessengerTransforming Growth Factor beta

Identifiers

PMID17641910
OpenAlexW2155341974

What OpenQuestion holds

Textmetadata
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.