Evidence map›Paper›PMID 34065211›Full record

ArticleInternational journal of environmental research and public health2021

Bioelectrical Impedance Vector Analysis: A Valuable Tool to Monitor Daily Body Hydration Dynamics at Altitude.

Ivo B Regli, Rachel Turner, Simon Woyke, Simon Rauch, Hermann Brugger, Hannes Gatterer

Abstract read
In one paragraph

Article in International journal of environmental research and public health, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

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

5 citing papers in PubMed.

  1. Trial
  2. Altitude hypoxia and hypoxemia: pathogenesis and management.Signal transduction and targeted therapy · 2026
    Review
  3. Article
  4. Article
  5. 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

6 authors.

Ivo B RegliInstitute of Mountain Emergency Medicine, Eurac Research, 39100 Bolzano, Italy.
Rachel TurnerInstitute of Mountain Emergency Medicine, Eurac Research, 39100 Bolzano, Italy.ORCID 0000-0003-4371-580X
Simon WoykeInstitute of Mountain Emergency Medicine, Eurac Research, 39100 Bolzano, Italy.
Simon RauchInstitute of Mountain Emergency Medicine, Eurac Research, 39100 Bolzano, Italy.ORCID 0000-0002-3264-6303
Hermann BruggerInstitute of Mountain Emergency Medicine, Eurac Research, 39100 Bolzano, Italy.ORCID 0000-0003-2752-6929
Hannes GattererInstitute of Mountain Emergency Medicine, Eurac Research, 39100 Bolzano, Italy.ORCID 0000-0002-5084-2930

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Bioelectrical impedance vector analysis (BIVA) is a method used to estimate variation in body hydration. We assessed the potential of BIVA for monitoring daily body hydration fluctuations in nine healthy, normally active males under matching normoxic (NX) and hypobaric hypoxic (HH) experimental conditions. Furthermore, we aimed to investigate whether changes in BIVA may correspond with the development of acute mountain sickness (AMS). Subjects were exposed in a hypobaric chamber to both NX (corresponding to an altitude of 262 m) and HH conditions corresponding to an altitude of 3500 m during two four-day sojourns within which food, water intake and physical activity were controlled. Bioimpedance and body weight measurements were performed three times a day and medical symptoms were assessed every morning using the Lake Louise score (LLS). Total body water (TBW) was also assessed on the last day of both sojourns using the deuterium dilution technique. We detected circadian changes in vector length, indicating circadian body water variations that did not differ between NX and HH conditions (ANOVA effects: time:

Indexed as

AltitudeAltitude SicknessAcute DiseaseBody WaterElectric ImpedanceHumansHypoxiaMaleacute mountain sicknessbioimpedancecircadian rhythmextracellularhigh altitudeintracellulartotal body water

Identifiers

PMID34065211
PMCPMC8161038

What OpenQuestion holds

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Registered trials

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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.