Evidence map›Paper›PMID 24327174›Full record

ArticleEuropean journal of applied physiology2014

Hypoxia refines plasticity of mitochondrial respiration to repeated muscle work.

Dominique Desplanches, Myriam Amami, Sylvie Dupré-Aucouturier, Paola Valdivieso, Silvia Schmutz, Matthias Mueller, Hans Hoppeler, Roland Kreis, Martin Flück

Abstract read
In one paragraph

Article in European journal of applied physiology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed, 3 pooled it
–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

25 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Trial
  5. Epigenetic Modulation of the ACE System Underlies the Slow Aerobic Muscle Phenotype and Metabolic Exercise Response.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2026
    Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Mitochondrial function at extreme high altitude.The Journal of physiology · 2016
    Review
  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

9 authors.

Dominique DesplanchesCentre de Génétique et de Physiologie Moléculaire et Cellulaire, CNRS UMR 5534, Université Lyon 1, Villeurbanne, France.
Myriam Amami
Sylvie Dupré-Aucouturier
Paola Valdivieso
Silvia Schmutz
Matthias Mueller
Hans Hoppeler
Roland Kreis
Martin Flück

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeWe explored whether altered expression of factors tuning mitochondrial metabolism contributes to muscular adaptations with endurance training in the condition of lowered ambient oxygen concentration (hypoxia) and whether these adaptations relate to oxygen transfer as reflected by subsarcolemmal mitochondria and oxygen metabolism in muscle.

methodsMale volunteers completed 30 bicycle exercise sessions in normoxia or normobaric hypoxia (4,000 m above sea level) at 65% of the respective peak aerobic power output. Myoglobin content, basal oxygen consumption, and re-oxygenation rates upon reperfusion after 8 min of arterial occlusion were measured in vastus muscles by magnetic resonance spectroscopy. Biopsies from vastus lateralis muscle, collected pre and post a single exercise bout, and training, were assessed for levels of transcripts and proteins being associated with mitochondrial metabolism.

resultsHypoxia specifically lowered the training-induced expression of markers of respiratory complex II and IV (i.e. SDHA and isoform 1 of COX-4; COX4I1) and preserved fibre cross-sectional area. Concomitantly, trends (p < 0.10) were found for a hypoxia-specific reduction in the basal oxygen consumption rate, and improvements in oxygen repletion, and aerobic performance in hypoxia. Repeated exercise in hypoxia promoted the biogenesis of subsarcolemmal mitochondria and this was co-related to expression of isoform 2 of COX-4 with higher oxygen affinity after single exercise, de-oxygenation time and myoglobin content (r ≥ 0.75). Conversely, expression in COX4I1 with training correlated negatively with changes of subsarcolemmal mitochondria (r < -0.82).

conclusionHypoxia-modulated adjustments of aerobic performance with repeated muscle work are reflected by expressional adaptations within the respiratory chain and modified muscle oxygen metabolism.

Indexed as

Cell RespirationExerciseOxygen ConsumptionAdultAltitudeCase-Control StudiesElectron Transport Complex IElectron Transport Complex IVHumansHypoxiaMaleMitochondriaMuscle, SkeletalMyoglobinReperfusionRNA, MessengerElectron Transport Complex IElectron Transport Complex IVMyoglobinRNA, Messenger

Identifiers

PMID24327174
PMCPMC3895187

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.