Evidence map›Paper›PMID 33932869›Full record

ReviewRedox biology2021

The central role of mitochondrial fitness on antiviral defenses: An advocacy for physical activity during the COVID-19 pandemic.

Johannes Burtscher, Martin Burtscher, Grégoire P Millet

Open access · goldAbstract readReview
In one paragraph

Review in Redox biology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed
7.1field-weighted citation impact, top 2% 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

40 citing papers in PubMed, 67 citations in OpenAlex.

  1. Trial
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  8. UPRmt-regulated mitokines: novel strategies for myocardial injury repair.Frontiers in cell and developmental biology · 2025
    Review
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  11. Immune consequences of exercise in hypoxia: A narrative review.Journal of sport and health science · 2024
    Review
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  20. Immunology of Aging: the Birth of Inflammaging.Clinical reviews in allergy & immunology · 2023
    Review
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

3 authors at 2 institutions in 2 countries.

Johannes BurtscherInstitute of Sport Sciences, University of Lausanne, CH-1015, Lausanne, Switzerland; Department of Biomedical Sciences, University of Lausanne, CH-1015, Lausanne, Switzerland. Electronic address: johannes.burtscher@unil.ch.
Martin BurtscherUniversity of Innsbruck, A-6020, Innsbruck, Austria.
Grégoire P MilletInstitute of Sport Sciences, University of Lausanne, CH-1015, Lausanne, Switzerland.
University of Lausanne · CHUniversität Innsbruck · AT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Mitochondria are central regulators of cellular metabolism, most known for their role in energy production. They can be "enhanced" by physical activity (including exercise), which increases their integrity, efficiency and dynamic adaptation to stressors, in short "mitochondrial fitness". Mitochondrial fitness is closely associated with cardiorespiratory fitness and physical activity. Given the importance of mitochondria in immune functions, it is thus not surprising that cardiorespiratory fitness is also an integral determinant of the antiviral host defense and vulnerability to infection. Here, we first briefly review the role of physical activity in viral infections. We then summarize mitochondrial functions that are relevant for the antiviral immune response with a particular focus on the current Coronavirus Disease (COVID-19) pandemic and on innate immune function. Finally, the modulation of mitochondrial and cardiorespiratory fitness by physical activity, aging and the chronic diseases that represent the most common comorbidities of COVID-19 is discussed. We conclude that a high mitochondrial - and related cardiorespiratory - fitness should be considered as protective factors for viral infections, including COVID-19. This assumption is corroborated by reduced mitochondrial fitness in many established risk factors of COVID-19, like age, various chronic diseases or obesity. We argue for regular analysis of the cardiorespiratory fitness of COVID-19 patients and the promotion of physical activity - with all its associated health benefits - as preventive measures against viral infection.

Indexed as

COVID-19PandemicsAntiviral AgentsExerciseHumansMitochondriaSARS-CoV-2Antiviral AgentsCardiorespiratory fitnessCOVIDExerciseImmune systemMitochondriaPhysical activityVirus

Identifiers

PMID33932869
PMCPMC8062414
OpenAlexW3158054415

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.