Evidence map›Paper›PMID 40051190›Full record

ArticleObesity (Silver Spring, Md.)2025

Validation of a novel approach to assess metabolic flexibility to a high-fat meal in a whole-body room calorimeter.

David H McDougal, Guillermo Sanchez-Delgado, Emily W Flanagan, Kara L Marlatt, Joshua R Sparks, Shengping Yang, Leanne M Redman, Eric Ravussin

Registry-linked trialAbstract readValidation Study
In one paragraph

Article in Obesity (Silver Spring, Md.), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT07613255 (Evaluating Energy Metabolism and Metabolic Health in Individuals With Extreme Obesity), which is not on this 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.

NCT07613255 not yet recruitingnot on this mapstarted 2026, after this paper: background citation

Evaluating Energy Metabolism and Metabolic Health in Individuals With Extreme Obesity

TypeobservationalSponsorPennington Biomedical Research CenterRan2026 to 2026Enrolled10ConditionsBMI>40ArmsHigh-fat test meal
3 · Its place in the literature

Who cites it

2 citing papers in PubMed.

  1. Review
  2. Article
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

8 authors.

David H McDougalPennington Biomedical Research Center, Baton Rouge, Louisiana, USA.ORCID https://orcid.org/0000-0003-4243-4897
Guillermo Sanchez-DelgadoPennington Biomedical Research Center, Baton Rouge, Louisiana, USA.
Emily W FlanaganPennington Biomedical Research Center, Baton Rouge, Louisiana, USA.
Kara L MarlattPennington Biomedical Research Center, Baton Rouge, Louisiana, USA.ORCID https://orcid.org/0000-0001-7721-7900
Joshua R SparksPennington Biomedical Research Center, Baton Rouge, Louisiana, USA.
Shengping YangPennington Biomedical Research Center, Baton Rouge, Louisiana, USA.
Leanne M RedmanPennington Biomedical Research Center, Baton Rouge, Louisiana, USA.ORCID https://orcid.org/0000-0002-7267-7374
Eric RavussinPennington Biomedical Research Center, Baton Rouge, Louisiana, USA.ORCID https://orcid.org/0000-0003-2129-547X

Funding

Tracking & Evaluation CoreU54GM104940 · NIGMS · LSU PENNINGTON BIOMEDICAL RESEARCH CTR · PI Peter Todd Katzmarzyk · 2012 to 2026
$69.1M
Research BaseP30DK072476 · NIDDK · LSU PENNINGTON BIOMEDICAL RESEARCH CTR · PI Peter Todd Katzmarzyk · 2005 to 2026
$26.5M
a Marie Skłodowska-Curie Actions-Individual Fellowship 101028941NIDDK NIH HHS P30 DK072476NIGMS NIH HHS U54 GM104940Pennington Biomedical Nutrition Obesity Research (NORC) sponsored by the National Institutes of Health (NIH) National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) P30DK072476personal grant from the Fundación Alfonso Martin Escudero (Alfonso Martin Escudero Foundation) 101028941
6 · The paper itself

Abstract

objectiveMetabolic inflexibility to Western high-fat diets may contribute to the obesity epidemic. However, validated methods for assessing metabolic flexibility (MetFlex) to high-fat meals are currently lacking. The purpose of this study was to evaluate the reliability of a novel approach for determining MetFlex to a high-fat meal and to compare it with the gold standard for measuring MetFlex to high-carbohydrate loads.

methodsEight healthy adults were enrolled in our study, which consisted of the following two assessments of MetFlex: 1) MetFlex to fat, via two overnight stays in a metabolic chamber separated by 5 to 7 days; and 2) Metflex to carbohydrates, via a two-step hyperinsulinemic-euglycemic clamp measured >5 days later.

resultsParticipants were predominantly White and male, with mean (SD) age of 29.4 (6.3) years and BMI of 25.4 (4.1) kg/m

conclusionsOvernight changes in substrate oxidation following a high-fat dinner meal represent a unique aspect of MetFlex that cannot be captured using more conventional methods. Our findings warrant prospective studies to determine whether these parameters are predictive of the development of obesity or metabolic dysfunction.

Indexed as

Calorimetry, IndirectDietary FatsDiet, High-FatEnergy MetabolismAdultDietary CarbohydratesFemaleGlucose Clamp TechniqueHumansMaleMealsObesityReproducibility of ResultsYoung AdultDietary CarbohydratesDietary Fats

Identifiers

PMID40051190
PMCPMC12478276

What OpenQuestion holds

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Registered trials

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.