Evidence map›Paper›PMID 19657668›Full record

Trial reportEuropean journal of applied physiology2009

Successive bouts of cycling stimulates genes associated with mitochondrial biogenesis.

Charles L Dumke, J Mark Davis, E Angela Murphy, David C Nieman, Martin D Carmichael, John C Quindry, N Travis Triplett, Alan C Utter, Sarah J Gross Gowin, Dru A Henson and 2 more

Abstract readClinical Trial
PubMed Publisher
In one paragraph

Trial report in European journal of applied physiology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed, 2 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

35 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Trial
  4. Therapeutic Potential of Irisin in Neurodegenerative Diseases.International journal of molecular sciences · 2025
    Review
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  7. Article
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  12. Exercise and Sirtuins: A Way to Mitochondrial Health in Skeletal Muscle.International journal of molecular sciences · 2019
    Review
  13. Article
  14. Review
  15. Review
  16. Resistive Training and Molecular Regulators of Vascular-Metabolic Risk in Chronic Stroke.Journal of stroke and cerebrovascular diseases : the official journal of National Stroke Association · 2017
    Article
  17. Article
  18. Article
  19. 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

12 authors.

Charles L DumkeDepartment of Health and Human Performance, University of Montana, Missoula, MT 59812, USA. charles.dumke@mso.umt.edu
J Mark Davis
E Angela Murphy
David C Nieman
Martin D Carmichael
John C Quindry
N Travis Triplett
Alan C Utter
Sarah J Gross Gowin
Dru A Henson
Steven R McAnulty
Lisa S McAnulty

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Exercise increases mRNA for genes involved in mitochondrial biogenesis and oxidative enzyme capacity. However, little is known about how these genes respond to consecutive bouts of prolonged exercise. We examined the effects of 3 h of intensive cycling performed on three consecutive days on the mRNA associated with mitochondrial biogenesis in trained human subjects. Forty trained cyclists were tested for VO(2max) (54.7 +/- 1.1 ml kg(-1) min(-1)). The subjects cycled at 57% watts(max) for 3 h using their own bicycles on CompuTrainer Pro Model trainers (RacerMate, Seattle, WA) on three consecutive days. Muscle biopsies were obtained from the vastus lateralis pre- and post-exercise on days one and three. Muscle samples were analyzed for mRNA content of peroxisome proliferator receptor gamma coactivator-1 alpha (PGC-1alpha), sirtuin 1 (Sirt-1), cytochrome c, and citrate synthase. Data were analyzed using a 2 (time) x 2 (day) repeated measures ANOVA. Of the mRNA analyzed, the following increased from pre to post 3 h rides: cytochrome c (P = 0.006), citrate synthase (P = 0.03), PGC-1alpha (P < 0.001), and Sirt-1 (P = 0.005). The following mRNA showed significant effects from days one to three: cytochrome c (P < 0.001) and citrate synthase (P = 0.01). These data show that exhaustive cycling performed on three consecutive days resulted in both acute and chronic stimuli for mRNA associated with mitochondrial biogenesis in already trained subjects. This is the first study to illustrate an increase in sirtuin-1 mRNA with acute and chronic exercise. These data contribute to the understanding of mRNA expression during both acute and successive bouts of prolonged exercise.

Indexed as

Genes, MitochondrialPeriodicityAdultBicyclingCitrate (si)-SynthaseCytochromes cExerciseHumansMaleMitochondrial ProteinsMitochondria, MusclePhysical EnduranceRNA, MessengerSirtuin 1Up-RegulationCitrate (si)-SynthaseCytochromes cMitochondrial ProteinsRNA, MessengerSirtuin 1

Identifiers

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.