Evidence map›Paper›PMID 34977961›Full record

ArticleEuropean journal of applied physiology2022

Repeated sprint training under hypoxia improves aerobic performance and repeated sprint ability by enhancing muscle deoxygenation and markers of angiogenesis in rugby sevens.

Wadee Pramkratok, Tongthong Songsupap, Tossaporn Yimlamai

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Article in European journal of applied physiology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 4 pooled it
3.9field-weighted citation impact, top 6% 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

15 citing papers in PubMed, 4 syntheses or guidelines pooled it, 21 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

3 authors at 2 institutions in 1 country.

Wadee PramkratokDepartment of Sports Science, Faculty of Sports Science, Chulalongkorn University, Rama 1 Road, Pathumwan District, Bangkok, 10330, Thailand.
Tongthong SongsupapDepartment of Sports Science, Faculty of Science, Chandrakasem Rajabhat University, Bangkok, 10900, Thailand.
Tossaporn YimlamaiDepartment of Sports Science, Faculty of Sports Science, Chulalongkorn University, Rama 1 Road, Pathumwan District, Bangkok, 10330, Thailand. Tossaporn.Y@chula.ac.th.ORCID http://orcid.org/0000-0003-0861-7075
Chulalongkorn University · THChandrakasem Rajabhat University · TH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo evaluate the effects of repeated sprint (RS) training in hypoxia on aerobic performance, repeated sprint ability (RSA), and muscle oxygenation in Rugby Sevens.

methodsFourteen Rugby Sevens players were randomly allocated into hypoxic (RSH, F

resultsRSH caused no changes in hemoglobin concentration and hematocrit but significant improvements in [Formula: see text] (7.5%, p = 0.03, ES = 1.07), time to exhaustion (17.6%, p = 0.05, ES = 0.92), and fatigue index (FI, - 12.3%, p = 0.01, ES = 1.39) during the RSA test compared to baseline but not RSN. While ∆deoxygenated hemoglobin was significantly increased both after RSH and RSN (p < 0.05), ∆tissue saturation index (- 56.1%, p = 0.01, ES = 1.35) and ∆oxygenated hemoglobin (- 54.7%, p = 0.04, ES = 0.97) were significantly decreased after RSH. These changes were concomitant with increased levels of HIF-1α and VEGF in serum after RSH with a strong negative correlation between ∆FI and ∆deoxygenated hemoglobin after RSH (r = - 0.81, p = 0.03).

conclusionThere was minimal benefit from adding RSH to standard Rugby Sevens training, in eliciting improvements in aerobic performance and resistance to fatigue, possibly by enhanced muscle deoxygenation and increased serum HIF-1α and VEGF concentrations.

Indexed as

Athletic PerformanceBiomarkersHumansHypoxiaHypoxia-Inducible Factor 1, alpha SubunitMaleMuscle, SkeletalOxygen ConsumptionPhysical Conditioning, HumanRugbyRunningThailandVascular Endothelial Growth Factor AYoung AdultBiomarkersHIF1A protein, humanHypoxia-Inducible Factor 1, alpha SubunitVascular Endothelial Growth Factor AAltitude trainingHypoxic-inducible factor-1 alphaNear-infrared spectroscopyTeam sportsVascular endothelial growth factor

Identifiers

PMID34977961
OpenAlexW4205930991

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.