Evidence map›Paper›PMID 18398420›Full record

Trial reportEuropean journal of clinical nutrition2009

Effects of the 'live high-train low' method on prooxidant/antioxidant balance on elite athletes.

V Pialoux, R Mounier, E Rock, A Mazur, L Schmitt, J-P Richalet, P Robach, J Brugniaux, J Coudert, N Fellmann

Abstract readClinical Trial
PubMed Publisher
In one paragraph

Trial report in European journal of clinical nutrition, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
1.9field-weighted citation impact, top 13% 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

19 citing papers in PubMed, 40 citations in OpenAlex.

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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

10 authors at 3 institutions in 1 country.

V PialouxLaboratoire de Biologie des Activités Physiques et Sportives, Faculté de Médecine, Université d'Auvergne, Clermont-Ferrand, France.
R Mounier
E Rock
A Mazur
L Schmitt
J-P Richalet
P Robach
J Brugniaux
J Coudert
N Fellmann
Centre de Recherche en Nutrition Humaine d'Auvergne · FRUniversité Paris Cité · FRUniversité Sorbonne Paris Nord · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

BACKGROUND/

objectivesWe previously demonstrated that acute exposure to hypoxia (3 h at 3000 m) increased oxidative stress markers. Thus, by using the 'living high-training low' (LHTL) method, we further hypothesized that intermittent hypoxia associated with endurance training alters the prooxidant/antioxidant balance. SUBJECTS/

methodsTwelve elite athletes from the Athletic French Federation were subjected to 18-day endurance training. They were divided into two groups: one group (control group) trained at 1200 m and lived in hypoxia (2500-3000 m simulated altitude) and the second group trained and lived at 1200 m. The subjects performed an acute hypoxic test (10 min at 4800 m) before and immediately after the training. Plasma levels of advanced oxidation protein products (AOPP), malondialdehydes (MDA), ferric-reducing antioxidant power (FRAP), lipid-soluble antioxidants normalized for triacylglycerols, and cholesterol and retinol were measured before and after the 4800 m tests.

resultsAfter the training, MDA and AOPP concentrations were decreased in response to the 4800 m test only for the control group. Eighteen days of LHTL induced a significant decrease of all antioxidant markers (FRAP, P=0.01; alpha-tocopherol, P=0.04; beta-carotene, P=0.01 and lycopene, P=0.02) for the runners. This imbalance between antioxidant and prooxidant might result from insufficient intakes in vitamins A and E.

conclusionsThe LHTL model characterized by the association of aerobic exercises and intermittent resting hypoxia exposures decreased the antioxidant status whereas the normoxic endurance training induced preconditioning mechanisms in response to the 4800 m test.

Indexed as

alpha-TocopherolAltitudeAntioxidantsbeta CaroteneCarotenoidsExerciseHumansHypoxiaLipid MetabolismLycopeneMaleMalondialdehydeOxidative StressPhysical EnduranceProteinsReactive Oxygen Speciesalpha-TocopherolAntioxidantsbeta CaroteneCarotenoidsLycopeneMalondialdehydeProteinsReactive Oxygen SpeciesVitamin AVitamin EVitamins

Identifiers

PMID18398420
OpenAlexW2064403342

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.