Evidence map›Paper›PMID 34203350›Full record

ReviewLife (Basel, Switzerland)2021

Exercising in Hypoxia and Other Stimuli: Heart Rate Variability and Ventilatory Oscillations.

Eric Hermand, François J Lhuissier, Aurélien Pichon, Nicolas Voituron, Jean-Paul Richalet

Open access · goldAbstract readReview
In one paragraph

Review in Life (Basel, Switzerland), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 1 pooled it
1.7field-weighted citation impact, top 14% 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

11 citing papers in PubMed, 1 synthesis or guideline pooled it, 13 citations in OpenAlex.

  1. Pooled it
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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 3 institutions in 1 country.

Eric HermandULR 7369-URePSSS-Unité de Recherche Pluridisciplinaire Sport Santé Société, Univ. Littoral Côte d'Opale, Univ. Artois, Univ. Lille, 59379 Dunkerque, France.ORCID 0000-0002-3925-3393
François J LhuissierUMR INSERM U1272 Hypoxie & Poumon, Université Sorbonne Paris Nord, 93017 Bobigny, France.ORCID 0000-0003-1491-5896
Aurélien PichonLaboratoire MOVE (EA6314), Université de Poitiers, 86073 Poitiers, France.ORCID 0000-0003-2772-9232
Nicolas VoituronUMR INSERM U1272 Hypoxie & Poumon, Université Sorbonne Paris Nord, 93017 Bobigny, France.ORCID 0000-0002-2092-4900
Jean-Paul RichaletUMR INSERM U1272 Hypoxie & Poumon, Université Sorbonne Paris Nord, 93017 Bobigny, France.
Inserm · FRUniversité de Lille · FRUniversité de Poitiers · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Periodic breathing is a respiratory phenomenon frequently observed in patients with heart failure and in normal subjects sleeping at high altitude. However, until recently, periodic breathing has not been studied in wakefulness and during exercise. This review relates the latest findings describing this ventilatory disorder when a healthy subject is submitted to simultaneous physiological (exercise) and environmental (hypoxia, hyperoxia, hypercapnia) or pharmacological (acetazolamide) stimuli. Preliminary studies have unveiled fundamental physiological mechanisms related to the genesis of periodic breathing characterized by a shorter period than those observed in patients (11~12 vs. 30~60 s). A mathematical model of the respiratory system functioning under the aforementioned stressors corroborated these data and pointed out other parameters, such as dead space, later confirmed in further research protocols. Finally, a cardiorespiratory interdependence between ventilatory oscillations and heart rate variability in the low frequency band may partly explain the origin of the augmented sympathetic activation at exercise in hypoxia. These nonlinear instabilities highlight the intrinsic "homeodynamic" system that allows any living organism to adapt, to a certain extent, to permanent environmental and internal perturbations.

Indexed as

acetazolamideexerciseheart rate variabilityhypercapniahyperoxiahypoxiamathematical modelingperiodic breathing

Identifiers

PMID34203350
PMCPMC8306822
OpenAlexW3174756430

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.