Evidence map›Paper›PMID 42730855›Full record

ArticleEuropean journal of applied physiology2026

Validity and reliability of the Vyntus CPX metabolic gas analyzer compared with the Douglas Bag method.

Kim Arne Heitmann, Karianne Hagerupsen, Svein Arne Pettersen, Boye Welde, Jon Ingulf Medbø, Kristoffer Robin Johansen

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Article in European journal of applied physiology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing 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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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.

Kim Arne HeitmannSchool of Sport Sciences, UiT The Arctic University of Norway, Post Box 6050 Langnes, N-9037, Tromsø, Norway. kim.a.heitmann@uit.no.ORCID http://orcid.org/0000-0002-3963-7645
Karianne HagerupsenSchool of Sport Sciences, UiT The Arctic University of Norway, Post Box 6050 Langnes, N-9037, Tromsø, Norway.ORCID http://orcid.org/0009-0004-6222-7179
Svein Arne PettersenSchool of Sport Sciences, UiT The Arctic University of Norway, Post Box 6050 Langnes, N-9037, Tromsø, Norway.ORCID http://orcid.org/0000-0003-4700-0529
Boye WeldeSchool of Sport Sciences, UiT The Arctic University of Norway, Post Box 6050 Langnes, N-9037, Tromsø, Norway.ORCID http://orcid.org/0000-0003-3805-1615
Jon Ingulf MedbøFaculty of Teacher Education, Culture and Sports, Western Norway University of Applied Sciences, Sogndal, Norway.ORCID http://orcid.org/0000-0002-5152-9778
Kristoffer Robin JohansenSchool of Sport Sciences, UiT The Arctic University of Norway, Post Box 6050 Langnes, N-9037, Tromsø, Norway.ORCID http://orcid.org/0000-0003-0137-1404

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimsTo validate the Vyntus CPX system against Douglas Bag method.

methodsTwelve cycle-trained men and women completed an incremental cycling protocol starting at 50 W, increasing by 50 W every fifth minute up to 350 W or to near exhaustion. After a 5 min break a test of peak oxygen uptake (V̇O

resultsMean systematic differences were observed for V̇O

conclusionThe Vyntus CPX demonstrated agreement comparable with other studies on similar commercial instrument but showed reduced accuracy at higher levels of V̇O

Indexed as

Carbon dioxideCardiorespiratory fitnessOxygen uptakePulmonary ventilationRespiratory exchange ratioVO2max

Identifiers

PMID42730855

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.