Evidence map›Paper›PMID 19675072›Full record

ArticleThe Journal of physiology2009

High temperature does not alter fatigability in intact mouse skeletal muscle fibres.

Nicolas Place, Takashi Yamada, Shi-Jin Zhang, Håkan Westerblad, Joseph D Bruton

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of physiology, 2009. 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
3.2field-weighted citation impact, top 10% 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, 37 citations in OpenAlex.

  1. Article
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  3. CaScientific reports · 2024
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  11. Humanized animal exercise model for clinical implication.Pflugers Archiv : European journal of physiology · 2014
    Review
  12. Review
  13. Article
  14. Article
  15. A review of the thermal sensitivity of the mechanics of vertebrate skeletal muscle.Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology · 2013
    Review
  16. Article
  17. Article
  18. 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

5 authors at 1 institution in 2 countries.

Nicolas PlaceDepartment of Physiology and Pharmacology, Karolinska Institute, Stockholm S-171 77, Sweden.
Takashi Yamada
Shi-Jin Zhang
Håkan Westerblad
Joseph D Bruton
Karolinska Institutet · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Intense activation of skeletal muscle results in fatigue development, which involves impaired function of the muscle cells resulting in weaker and slower contractions. Intense muscle activity also results in increased heat production and muscle temperature may rise by up to 6 degrees C. Hyperthermia is associated with impaired exercise performance in vivo and recent studies have shown contractile dysfunction and premature fatigue development in easily fatigued muscle fibres stimulated at high temperatures and these defects were attributed to oxidative stress. Here we studied whether fatigue-resistant soleus fibres stimulated at increased temperature show premature fatigue development and whether increasing the level of oxidative stress accelerates fatigue development. Intact single fibres or small bundles of soleus fibres were fatigued by 600 ms tetani given at 2 s intervals at 37 degrees C and 43 degrees C, which is the highest temperature the muscle would experience in vivo. Tetanic force in the unfatigued state was not significantly different at the two temperatures. With 100 fatiguing tetani, force decreased by approximately 15% at both temperatures; the free cytosolic [Ca(2+)] (assessed with indo-1) showed a similar approximately 10% decrease at both temperatures. The oxidative stress during fatigue at 43 degrees C was increased by application of 10 microM hydrogen peroxide or tert-butyl hydroperoxide and this did not cause premature fatigue development. In summary, fatigue-resistant muscle fibres do not display impaired contractility and fatigue resistance at the highest temperature that mammals, including humans, would experience in vivo. Thus, intrinsic defects in fatigue-resistant muscle fibres cannot explain the decreased physical performance at high temperatures.

Indexed as

AnimalsCalciumElectric StimulationExerciseFeverHumansHydrogen PeroxideIn Vitro TechniquesMaleMiceMuscle ContractionMuscle FatigueMuscle Fibers, SkeletalOxidative StressTemperaturetert-ButylhydroperoxideCalciumHydrogen Peroxidetert-Butylhydroperoxide

Identifiers

PMID19675072
PMCPMC2768024
OpenAlexW2106561301

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.