Evidence map›Paper›PMID 27227084›Full record

ArticleTemperature (Austin, Tex.)

The effect of 10 days of heat acclimation on exercise performance in acute hypobaric hypoxia (4350 m).

Ailish C White, Roy M Salgado, Todd A Astorino, Jack A Loeppky, Suzanne M Schneider, James J McCormick, Trisha A McLain, Len Kravitz, Christine M Mermier

Open access · bronzeAbstract read
In one paragraph

Article in Temperature (Austin, Tex.). The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 2 pooled it
2.1field-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

12 citing papers in PubMed, 2 syntheses or guidelines pooled it, 28 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

9 authors at 4 institutions in 1 country.

Ailish C WhiteDepartment of Kinesiology, Point Loma Nazarene University, San Diego, CA, USA; Department of Health, Exercise, and Sports Sciences, University of New Mexico, Albuquerque, NM, USA.
Roy M SalgadoDepartment of Health, Exercise, and Sports Sciences, University of New Mexico, Albuquerque, NM, USA; Department of Kinesiology, Occidental College, Los Angeles, CA, USA.
Todd A AstorinoDepartment of Kinesiology, California State University San Marcos , San Marcos, CA, USA.
Jack A LoeppkyDepartment of Health, Exercise, and Sports Sciences, University of New Mexico , Albuquerque, NM, USA.
Suzanne M SchneiderDepartment of Health, Exercise, and Sports Sciences, University of New Mexico , Albuquerque, NM, USA.
James J McCormickDepartment of Health, Exercise, and Sports Sciences, University of New Mexico , Albuquerque, NM, USA.
Trisha A McLainDepartment of Health, Exercise, and Sports Sciences, University of New Mexico , Albuquerque, NM, USA.
Len KravitzDepartment of Health, Exercise, and Sports Sciences, University of New Mexico , Albuquerque, NM, USA.
Christine M MermierDepartment of Health, Exercise, and Sports Sciences, University of New Mexico , Albuquerque, NM, USA.
University of New Mexico · USCalifornia State University, San Marcos · USOccidental College · USPoint Loma Nazarene University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

To examine the effect ("cross-tolerance") of heat acclimation (HA) on exercise performance upon exposure to acute hypobaric hypoxia (4350 m). Eight male cyclists residing at 1600 m performed tests of maximal aerobic capacity (VO2max) at 1600 m and 4350 m, a 16 km time-trial at 4350 m, and a heat tolerance test at 1600 m before and after 10 d HA at 40°C, 20% RH. Resting blood samples were obtained pre-and post- HA to estimate changes in plasma volume (ΔPV). Successful HA was indicated by significantly lower exercise heart rate and rectal temperature on day 10 vs. day 1 of HA and during the heat tolerance tests. Heat acclimation caused a 1.9% ΔPV, however VO2max was not significantly different at 1600 m or 4350 m. Time-trial cycling performance improved 28 sec after HA (p = 0.07), suggesting a possible benefit for exercise performance at acute altitude and that cross-tolerance between these variables may exist in humans. These findings do not clearly support the use of HA to improve exercise capacity and performance upon acute hypobaric hypoxia, however they do indicate that HA is not detrimental to either exercise capacity or performance.

Indexed as

cross-toleranceheat exposurehigh altitudeplasma volumetime-trial performance

Identifiers

PMID27227084
PMCPMC4861181
OpenAlexW2330190854

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.