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Metformin does not attenuate the acute insulin-sensitizing effect of a single bout of exercise in individuals with insulin resistance.
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- Author(s): Ortega JF;Ortega JF; Hamouti N; Fernández-Elías VE; de Prada MV; Martínez-Vizcaíno V; Mora-Rodríguez R
- Source:
Acta diabetologica [Acta Diabetol] 2014 Oct; Vol. 51 (5), pp. 749-55. Date of Electronic Publication: 2014 Mar 29.- Publication Type:
Clinical Trial; Journal Article; Research Support, Non-U.S. Gov't- Language:
English - Source:
- Additional Information
- Source: Publisher: Springer Verlag Country of Publication: Germany NLM ID: 9200299 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1432-5233 (Electronic) Linking ISSN: 09405429 NLM ISO Abbreviation: Acta Diabetol Subsets: MEDLINE
- Publication Information: Publication: Berlin : Springer Verlag
Original Publication: Berlin : Springer International, c1991- - Subject Terms: Exercise Therapy* ; Insulin Resistance*; Diabetes Mellitus, Type 2/*therapy ; Hypoglycemic Agents/*administration & dosage ; Insulin/*metabolism ; Metformin/*administration & dosage; Blood Glucose/metabolism ; Combined Modality Therapy ; Diabetes Mellitus, Type 2/drug therapy ; Diabetes Mellitus, Type 2/metabolism ; Female ; Humans ; Male ; Middle Aged ; Postprandial Period
- Abstract: Combining metformin and exercise is recommended for the treatment of insulin resistance. However, it has been suggested that metformin blunts the insulin-sensitizing effects of exercise. We evaluated in a group of insulin-resistant patients the interactions between exercise and their daily dose of metformin. Ten insulin-resistant patients underwent insulin sensitivity assessment using intravenous glucose tolerance test after an overnight fast in the following conditions: (1) after taking their habitual morning dose of metformin (MET), (2) after 45 min of high intensity interval exercise having withheld metformin during 24 h (EX), and (3) after their habitual metformin dose plus an identical exercise bout (MET + EX). During the exercise trials (EX and MET + EX), energy expenditure and substrate oxidation were assessed by indirect calorimetry. In addition, 12-h postprandial blood glucose was measured in all three trials. Insulin sensitivity was similar between MET and EX [4.0 ± 0.8 and 4.1 ± 0.7 × 10(-4) min(-1) (μU mL)(-1); P = 0.953] but was 43 % higher than both MET and EX after MET + EX (NS; P = 0.081). Blood glucose disappearance rate was higher after MET + EX than after MET or EX trials (1.7 ± 0.2, 1.0 ± 0.1, and 1.2 ± 0.1 % min(-1), respectively; P = 0.020). There was no difference in postprandial blood glucose concentration after the three meals that followed the trials (P = 0.446). Exercise energy expenditure was 9 % higher during MET + EX than during EX (P = 0.015) partly due to increased carbohydrate oxidation. Our data suggest that habitual metformin treatment in insulin-resistant patients does not blunt the acute insulin-sensitizing effects of a single bout of exercise that on the contrary, tends to enhance it.
- Accession Number: 0 (Blood Glucose)
0 (Hypoglycemic Agents)
0 (Insulin)
9100L32L2N (Metformin) - Publication Date: Date Created: 20140401 Date Completed: 20150715 Latest Revision: 20140927
- Publication Date: 20240628
- Accession Number: 10.1007/s00592-014-0580-4
- Accession Number: 24682492
- Source:
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