Evidence map›Paper›PMID 27637589›Full record

ArticleEuropean journal of applied physiology2016

Mechanisms of force depression caused by different types of physical exercise studied by direct electrical stimulation of human quadriceps muscle.

Albertas Skurvydas, Gediminas Mamkus, Sigitas Kamandulis, Vilma Dudoniene, Dovile Valanciene, Håkan Westerblad

Abstract readControlled Clinical Trial
In one paragraph

Article in European journal of applied physiology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing 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

33 citing papers in PubMed.

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  13. The First Wave of the COVID-19 Pandemic Strengthened the "Strong" and Weakened the "Weak" Ones.International journal of environmental research and public health · 2022
    Article
  14. Effect of Six-Week Speed Endurance Training on Peripheral Fatigue.International journal of environmental research and public health · 2022
    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

6 authors.

Albertas SkurvydasInstitute of Sports Science and Innovation, Lithuanian Sports University, Lithuania, Sporto 6, 44221, Kaunas, Lithuania.
Gediminas MamkusInstitute of Sports Science and Innovation, Lithuanian Sports University, Lithuania, Sporto 6, 44221, Kaunas, Lithuania.
Sigitas KamandulisInstitute of Sports Science and Innovation, Lithuanian Sports University, Lithuania, Sporto 6, 44221, Kaunas, Lithuania.
Vilma DudonieneInstitute of Sports Science and Innovation, Lithuanian Sports University, Lithuania, Sporto 6, 44221, Kaunas, Lithuania.
Dovile ValancieneInstitute of Sports Science and Innovation, Lithuanian Sports University, Lithuania, Sporto 6, 44221, Kaunas, Lithuania.
Håkan WesterbladInstitute of Sports Science and Innovation, Lithuanian Sports University, Lithuania, Sporto 6, 44221, Kaunas, Lithuania. hakan.westerblad@ki.se.ORCID http://orcid.org/0000-0002-8180-3029

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeForce production frequently remains depressed for several hours or even days after various types of strenuous physical exercise. We hypothesized that the pattern of force changes during the first hour after exercise can be used to reveal muscular mechanisms likely to underlie the decline in muscle performance during exercise as well as factors involved in the triggering the prolonged force depression after exercise.

methodsNine groups of recreationally active male volunteers performed one of the following types of exercise: single prolonged or repeated short maximum voluntary contractions (MVCs); single or repeated all-out cycling bouts; repeated drop jumps. The isometric force of the right quadriceps muscle was measured during stimulation with brief 20 and 100 Hz trains of electrical pulses given before and at regular intervals for 60 min after exercise.

resultsAll exercises resulted in a prolonged force depression, which was more marked at 20 Hz than at 100 Hz. Short-lasting (≤2 min) MVC and all-out cycling exercises showed an initial force recovery (peak after ~ 5 min) followed by a secondary force depression. The repeated drop jumps, which involve eccentric contractions, resulted in a stable force depression with the 20 Hz force being markedly more decreased after 100 than 10 jumps.

conclusionsIn accordance with our hypothesis, the results propose at least three different mechanisms that influence force production after exercise: (1) a transiently recovering process followed by (2) a prolonged force depression after metabolically demanding exercise, and (3) a stable force depression after mechanically demanding contractions.

Indexed as

Electric StimulationExerciseHumansMaleMuscle ContractionMuscle RelaxationMuscle StrengthPhysical Conditioning, HumanPhysical EnduranceQuadriceps MuscleRecovery of FunctionYoung AdultEccentric contractionsIsometric contractionProlonged low-frequency force depressionRecoveryWingate cycling

Identifiers

PMID27637589
PMCPMC5118408

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.