Combined training increases thermogenic fat activity in patients with overweight and type 2 diabetes

Ivan Luiz Padilha Bonfante* (Corresponding Author), Milena Monfort-Pires, Renata Garbellini Duft, Keryma Chaves da Silva Mateus, José Carlos de Lima Júnior, Joice Cristina dos Santos Trombeta, Enrico Antonio Rautenberg Finardi, Diego Trevisan Brunelli, Joseane Morari, Jéssica Aparecida Barbosa de Lima, Maria Luisa Bellotto, Thiago Matos Ferreira de Araújo, Celso Darío Ramos, Mara Patricia Traina Chacon-Mikahil, Licio Augusto Velloso, Cláudia Regina Cavaglieri* (Corresponding Author)

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

Background
Exercise is an important strategy in the management of diabetes. Experimental studies have shown that exercise acts, at least in part, by inducing the production of myokines that improve metabolic control and activate brown/beige adipose tissue depots. Combined training (CT) is recommended by the major diabetes guidelines due to its metabolic and cardiovascular benefits, however, its impact on brown/beige adipose tissue activities has never been tested in humans with overweight and type 2 diabetes (T2D). Here, we evaluated the effects of 16-week combined training (CT) program on brown adipose tissue activity; browning and autophagy markers, and serum pro-thermogenic/inflammatory inducers in patients with overweight and T2D.

Methods
Thirty-four patients with overweight and T2D were assigned to either a control group (CG) or a combined training group (CTG) in a randomized and controlled study. Functional/fitness parameters, anthropometry/body composition parameters, blood hormone/biochemical parameters, thermogenic/autophagic gene expression in subcutaneous adipose tissue were evaluated before and at the end of the intervention. In addition, cold-induced 18-Fluoroxyglucose Positron Emission Computed Tomography (18F-FDG PET/CT) was performed in the training group before and after the end of the intervention.

Results
CT increased cervical/supraclavicular brown adipose tissue (BAT) thermogenic activity (p = 0.03) as well as in perirenal adipose tissue (p = 0.02). In addition, CT increased the expression of genes related to thermogenic profile (TMEM26: + 95%, p = 0.04; and EPSTI1: + 26%, p = 0.03) and decreased autophagic genes (ULK1: −15%, p = 0.04; LC3: −5%, p = 0.02; and ATG4: −22%, p < 0.001) in subcutaneous adipose tissue. There were positive correlations between Δ% BAT activity with Δ% of post training energy expenditure cold exposure, HDL-c, IL4, adiponectin, irisin, meteorin-like, and TMEM26 and ZIC1 genes, besides negative correlations with LDL-c, total cholesterol and C-reactive protein.

Conclusion
This is the first evidence of the beneficial actions of CT on adipose tissue thermogenic activity in humans, and it adds important support for the recommendation of CT as a strategy in the management of diabetes.
Original languageEnglish
Pages (from-to)1145-1154
Number of pages9
JournalInternational Journal of Obesity
Volume46
Early online date16 Feb 2022
DOIs
Publication statusPublished - Jun 2022

Bibliographical note

ILPB thank Luiz Carlos Bonfante (In memoriam). The authors thank the participants; Obesity and Comorbidities Research Center—University of Campinas; Clinics Hospital—University of Campinas; Faculty of Physical Education—University of Campinas; Nuclear Medicine and collaborators team of Clinics Hospital—University of Campinas; Integrated Teaching, Research and Extension Laboratory—School of Physical Education—University of Campinas; Bárbara J. Amorim, Sergio Brunetto, Edna Brunetto, Natália Tobar, Antonio Calixto and Marcela Reymond Simões for your contribution in technical support.

Data Availability Statement

The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.

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