Similar metabolic health in overweight/obese individuals with contrasting metabolic flexibility to an oral glucose tolerance test
Date
2021-11-16
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Journal Title
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Publisher
Frontiers Media
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2296-861X
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Abstract
Background: Low metabolic flexibility (MetF) may be an underlying factor for metabolic
health impairment. Individuals with low MetF are thus expected to have worse metabolic
health than subjects with high MetF. Therefore, we aimed to compare metabolic health
in individuals with contrasting MetF to an oral glucose tolerance test (OGTT).
Methods: In individuals with excess body weight, we measured MetF as the change in
respiratory quotient (RQ) from fasting to 1 h after ingestion of a 75-g glucose load (i.e.,
OGTT). Individuals were then grouped into low and high MetF (Low-MetF n = 12; HighMetF n = 13). The groups had similar body mass index, body fat, sex, age, and maximum
oxygen uptake. Metabolic health markers (clinical markers, insulin sensitivity/resistance,
abdominal fat, and intrahepatic fat) were compared between groups.
Results: Fasting glucose, triglycerides (TG), and high-density lipoprotein (HDL) were
similar between groups. So were insulin sensitivity/resistance, visceral, and intrahepatic
fat. Nevertheless, High-MetF individuals had higher diastolic blood pressure, a larger
drop in TG concentration during the OGTT, and a borderline significant (P = 0.05)
higher Subcutaneous Adipose Tissue (SAT). Further, compared to Low-MetF, High-MetF
individuals had an about 2-fold steeper slope for the relationship between SAT and fat
mass index.
Conclusion: Individuals with contrasting MetF to an OGTT had similar metabolic health.
Yet High-MetF appears related to enhanced circulating TG clearance and enlarged
subcutaneous fat.
Description
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The work was funded by ANID/CONICYT FONDECYT
Iniciación (11180361 to RF-V), and ANID/CONICYT
FONDECYT Regular (1170117 to JG).
Citation
Fernández-Verdejo R, Malo-Vintimilla L, Gutiérrez-Pino J, López-Fuenzalida A, Olmos P, Irarrazaval P and Galgani JE (2021) Similar Metabolic Health in Overweight/Obese Individuals With Contrasting Metabolic Flexibility to an Oral Glucose Tolerance Test. Front. Nutr. 8:745907. doi: 10.3389/fnut.2021.745907
Keywords
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Atribución-NoComercial-CompartirIgual 3.0 Chile (CC BY-NC-SA 3.0 CL)