Evidence map›Paper›PMID 25759671›Full record

ArticleFrontiers in physiology2015

Changes in mitochondrial function and mitochondria associated protein expression in response to 2-weeks of high intensity interval training.

Grace Vincent, Séverine Lamon, Nicholas Gant, Peter J Vincent, Julia R MacDonald, James F Markworth, Johann A Edge, Anthony J R Hickey

Open access · goldAbstract read
In one paragraph

Article in Frontiers in physiology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed, 1 pooled it
25.7field-weighted citation impact, top 1% 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

33 citing papers in PubMed, 1 synthesis or guideline pooled it, 69 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Mitochondrial respiration variability and simulations in human skeletal muscle: The Gene SMART study.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2020
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  12. Effects of low and high intensity interval training exercises on VOJournal of musculoskeletal & neuronal interactions · 2022
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  18. Review
  19. Small Molecule Oligopeptides Isolated from Walnut (Molecules (Basel, Switzerland) · 2018
    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 2 institutions in 2 countries.

Grace VincentCentre for Physical Activity and Nutrition Research, School of Exercise and Nutrition Sciences, Deakin University Melbourne VIC, Australia ; Department of Sport and Exercise Science, The University of Auckland Auckland, New Zealand.
Séverine LamonCentre for Physical Activity and Nutrition Research, School of Exercise and Nutrition Sciences, Deakin University Melbourne VIC, Australia.
Nicholas GantDepartment of Sport and Exercise Science, The University of Auckland Auckland, New Zealand.
Peter J VincentDepartment of General Practice and Primary Healthcare, Auckland School of Medicine, The University of Auckland Auckland, New Zealand.
Julia R MacDonaldApplied Surgery and Metabolism Laboratory, School of Biological Sciences, The University of Auckland Auckland, New Zealand.
James F MarkworthLiggins Institute, The University of Auckland Auckland, New Zealand.
Johann A EdgeDepartment of Sport and Exercise Science, The University of Auckland Auckland, New Zealand.
Anthony J R HickeyApplied Surgery and Metabolism Laboratory, School of Biological Sciences, The University of Auckland Auckland, New Zealand.
University of Auckland · NZDeakin University · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeHigh-intensity short-duration interval training (HIT) stimulates functional and metabolic adaptation in skeletal muscle, but the influence of HIT on mitochondrial function remains poorly studied in humans. Mitochondrial metabolism as well as mitochondrial-associated protein expression were tested in untrained participants performing HIT over a 2-week period.

methodsEight males performed a single-leg cycling protocol (12 × 1 min intervals at 120% peak power output, 90 s recovery, 4 days/week). Muscle biopsies (vastus lateralis) were taken pre- and post-HIT. Mitochondrial respiration in permeabilized fibers, citrate synthase (CS) activity and protein expression of peroxisome proliferator-activated receptor gamma coactivator (PGC-1α) and respiratory complex components were measured.

resultsHIT training improved peak power and time to fatigue. Increases in absolute oxidative phosphorylation (OXPHOS) capacities and CS activity were observed, but not in the ratio of CCO to the electron transport system (CCO/ETS), the respiratory control ratios (RCR-1 and RCR-2) or mitochondrial-associated protein expression. Specific increases in OXPHOS flux were not apparent after normalization to CS, indicating that gross changes mainly resulted from increased mitochondrial mass.

conclusionOver only 2 weeks HIT significantly increased mitochondrial function in skeletal muscle independently of detectable changes in mitochondrial-associated and mitogenic protein expression.

Indexed as

HITmitochondriaoxidative phosphorylationPGC-1αskeletal muscle

Identifiers

PMID25759671
PMCPMC4338748
OpenAlexW2003306777

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.