Evidence map›Paper›PMID 27148076›Full record

ArticleFrontiers in physiology2016

Same Performance Changes after Live High-Train Low in Normobaric vs. Hypobaric Hypoxia.

Jonas J Saugy, Laurent Schmitt, Anna Hauser, Guillaume Constantin, Roberto Cejuela, Raphael Faiss, Jon P Wehrlin, Jérémie Rosset, Neil Robinson, Grégoire P Millet

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Frontiers in physiology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed, 5 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

23 citing papers in PubMed, 5 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Pooled it
  5. The effects of environmental hypoxia on substrate utilisation during exercise: a meta-analysis.Journal of the International Society of Sports Nutrition · 2019
    Pooled it
  6. Trial
  7. Review
  8. Review
  9. Article
  10. Review
  11. Article
  12. Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Review
  20. 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

10 authors.

Jonas J SaugyFaculty of Biology and Medicine, Institute of Sport Sciences, University of LausanneLausanne, Switzerland; Department of Physiology, Faculty of Biology and Medicine, University of LausanneLausanne, Switzerland.
Laurent SchmittFaculty of Biology and Medicine, Institute of Sport Sciences, University of LausanneLausanne, Switzerland; National School of Mountain Sports/National Ski-Nordic CentrePrémanon, France.
Anna HauserFaculty of Biology and Medicine, Institute of Sport Sciences, University of LausanneLausanne, Switzerland; Section for Elite Sport, Swiss Federal Institute of SportMagglingen, Switzerland.
Guillaume ConstantinFaculty of Biology and Medicine, Institute of Sport Sciences, University of Lausanne Lausanne, Switzerland.
Roberto CejuelaDepartmental Section of Physical Education and Sports, University of Alicante Alicante, Spain.
Raphael FaissFaculty of Biology and Medicine, Institute of Sport Sciences, University of LausanneLausanne, Switzerland; Section for Elite Sport, Swiss Federal Institute of SportMagglingen, Switzerland.
Jon P WehrlinSection for Elite Sport, Swiss Federal Institute of Sport Magglingen, Switzerland.
Jérémie RossetFaculty of Biology and Medicine, Institute of Sport Sciences, University of Lausanne Lausanne, Switzerland.
Neil RobinsonSwiss Laboratory for Doping Analyses, University of Lausanne Lausanne, Switzerland.
Grégoire P MilletFaculty of Biology and Medicine, Institute of Sport Sciences, University of LausanneLausanne, Switzerland; Department of Physiology, Faculty of Biology and Medicine, University of LausanneLausanne, Switzerland.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeWe investigated the changes in physiological and performance parameters after a Live High-Train Low (LHTL) altitude camp in normobaric (NH) or hypobaric hypoxia (HH) to reproduce the actual training practices of endurance athletes using a crossover-designed study.

methodsWell-trained triathletes (n = 16) were split into two groups and completed two 18-day LTHL camps during which they trained at 1100-1200 m and lived at 2250 m (P i O2 = 111.9 ± 0.6 vs. 111.6 ± 0.6 mmHg) under NH (hypoxic chamber; FiO2 18.05 ± 0.03%) or HH (real altitude; barometric pressure 580.2 ± 2.9 mmHg) conditions. The subjects completed the NH and HH camps with a 1-year washout period. Measurements and protocol were identical for both phases of the crossover study. Oxygen saturation (S p O2) was constantly recorded nightly. P i O2 and training loads were matched daily. Blood samples and VO2max were measured before (Pre-) and 1 day after (Post-1) LHTL. A 3-km running-test was performed near sea level before and 1, 7, and 21 days after training camps.

resultsTotal hypoxic exposure was lower for NH than for HH during LHTL (230 vs. 310 h; P < 0.001). Nocturnal S p O2 was higher in NH than in HH (92.4 ± 1.2 vs. 91.3 ± 1.0%, P < 0.001). VO2max increased to the same extent for NH and HH (4.9 ± 5.6 vs. 3.2 ± 5.1%). No difference was found in hematological parameters. The 3-km run time was significantly faster in both conditions 21 days after LHTL (4.5 ± 5.0 vs. 6.2 ± 6.4% for NH and HH), and no difference between conditions was found at any time.

conclusionIncreases in VO2max and performance enhancement were similar between NH and HH conditions.

Indexed as

aerobic exercisealtitude-training campcrossover studyreal altitudesimulated altitude

Identifiers

PMID27148076
PMCPMC4835493

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.