Evidence map›Paper›PMID 24668421›Full record

ArticleEuropean journal of applied physiology2014

"Live High-Train High" increases hemoglobin mass in Olympic swimmers.

Thomas Christian Bonne, Carsten Lundby, Susanne Jørgensen, Lars Johansen, Monija Mrgan, Signe Refsgaard Bech, Mikael Sander, Marcelo Papoti, Nikolai Baastrup Nordsborg

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Article in European journal of applied physiology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

27 citing papers in PubMed, 1 synthesis or guideline pooled it.

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  20. Periodization and Programming for Individual 400 m Medley Swimmers.International journal of environmental research and public health · 2021
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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

9 authors.

Thomas Christian BonneDepartment of Nutrition, Exercise and Sport Sciences, Faculty of Science, University of Copenhagen, Copenhagen, Denmark.
Carsten Lundby
Susanne Jørgensen
Lars Johansen
Monija Mrgan
Signe Refsgaard Bech
Mikael Sander
Marcelo Papoti
Nikolai Baastrup Nordsborg

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThis study tested whether 3-4 weeks of classical "Live High-Train High" (LHTH) altitude training increases swim-specific VO2max through increased hemoglobin mass (Hbmass).

methodsTen swimmers lived and trained for more than 3 weeks between 2,130 and 3,094 m of altitude, and a control group of ten swimmers followed the same training at sea-level (SL). Body composition was examined using dual X-ray absorptiometry. Hbmass was determined by carbon monoxide rebreathing. Swimming VO2peak was determined and swimming trials of 4 × 50, 200 and 3,000 m were performed before and after the intervention.

resultsHbmass (n = 10) was increased (P < 0.05)after altitude training by 6.2 ± 3.9 % in the LHTH group, whereas no changes were apparent in the SL group (n = 10). Swimming VO2peak was similar before and after training camps in both groups (LHTH: n = 7, SL: n = 6). Performance of 4 × 50 m at race pace was improved to a similar degree in both groups (LHTH: n = 10, SL: n = 10). Maximal speed reached in an incremental swimming step test (P = 0.051), and time to complete 3,000 m tended (P = 0.09) to be more improved after LHTH (n = 10) than SL training (n = 10).

conclusionIn conclusion, 3-4 weeks of classical LHTH is sufficient to increase Hbmass but exerts no effect on swimming-specific VO2peak. LHTH may improve performance more than SL training.

Indexed as

AcclimatizationAltitudeSwimmingAbsorptiometry, PhotonAdolescentAthletic PerformanceBiomarkersBody CompositionBreath TestsFemaleHemoglobinsHumansMaleOxygen ConsumptionPhysical Conditioning, HumanTask Performance and AnalysisBiomarkersHemoglobins

Identifiers

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.