Evidence mapPaperPMID 40707656Full record

ReviewInternational journal of obesity (2005)2025

Methodological issues related to maximal fat oxidation and FATmax reproducibility: a narrative review.

Isaac A Chávez Guevara, Francisco J Amaro-Gahete

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In one paragraph

Review in International journal of obesity (2005), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing 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

2 citing papers in PubMed.

  1. V̇OScandinavian journal of medicine & science in sports · 2026
    Article
  2. 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

2 authors.

Isaac A Chávez GuevaraFaculty of Sports Ensenada, Autonomous University of Baja California, Ensenada, Mexico. isaac.chavez.guevara@uabc.edu.mx.ORCID 0000-0001-9773-5043
Francisco J Amaro-GaheteDepartment of Physiology, Faculty of Medicine, Sport and Health University Research Institute (iMUDS), University of Granada, Granada, Spain.ORCID 0000-0002-7207-9016

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Maximal fat oxidation (MFO) and its corresponding exercise intensity (FATmax) seem to be reduced in individuals with obesity and cardio-metabolic diseases, showing a direct correlation with insulin resistance or sensitivity, muscle oxidative capacity, and adipose tissue lipolysis. In this review, we conducted a systematic search of the PubMed, Scopus, and Web of Science databases, summarizing the findings from 11 studies that evaluated the reproducibility of MFO and FATmax in both healthy individuals and people with obesity. Furthermore, we examine whether the reproducibility of these biomarkers is related to biological or methodological factors, underscoring the importance of standardizing pre-test macronutrient intake and physical activity levels. To further contribute to a standardized assessment of MFO and FATmax, this paper also discusses which exercise protocols and analytical procedures can be applied to minimize its measurement error. Finally, based on the accuracy of different gas analyzers for calculating substrate oxidation at FATmax, this review debates whether the reported day-to-day variation of these biomarkers may only represent the measurement error of these devices. Practical applications of MFO and FATmax reproducibility in the context of scientific research and exercise prescription are also provided, preventing biased hypothesis and theoretical models regarding fat oxidation capacity and cardio-metabolic health.

Indexed as

Adipose TissueExerciseObesityBiomarkersHumansInsulin ResistanceOxidation-ReductionReproducibility of ResultsBiomarkers

Identifiers

What Socratic 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 Socratic graph.