Glans F, Eriksson KF, Segerström A, Thorsson O, Wollmer P, Groop L. Evaluation of the effects of exercise on insulin sensitivity in Arabian and Swedish women with type 2 diabetes.
Diabetes Res Clin Pract 2009;
85:69-74. [PMID:
19447515 DOI:
10.1016/j.diabres.2009.04.018]
[Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2008] [Revised: 03/06/2009] [Accepted: 04/21/2009] [Indexed: 10/20/2022]
Abstract
AIMS
The purpose of this study was to evaluate the effects of exercise on cardio-respiratory fitness and insulin sensitivity in sedentary, overweight Arabian and Swedish women with type 2 diabetes.
METHODS
Eighteen Arabian and 14 Swedish women participated in a supervised 6-month resistance training and aerobic program of moderate intensity. Insulin sensitivity and VO(2max) were measured at entry to the study and after 3 and 6 months training.
RESULTS
After 6 months exercise, insulin sensitivity (M-value) increased (2.7+/-1.4 mg kg(-1) min(-1) vs. 3.4+/-2 mg kg(-1) min(-1), p<0.05) in all patients and accounted for by an increase in non-oxidative glucose metabolism (0.3+/-1.1 mg kg(-1) min(-1) vs. 1.5+/-1.5 mg kg(-1) min(-1), p<0.005) with no significant difference between the ethnic groups. Notably, significant improvement in HbA1c was only seen in the Swedish patients who achieved greater exercise intensity (73.3+/-4.8% vs. 63.3+/-5.2% of maximum heart rate, p<0.005). No changes were observed regarding VO(2max) or lipid profile in either group.
CONCLUSIONS
Although a 6-month exercise intervention of moderate intensity in Arabian and Swedish patients with type 2 diabetes can improve insulin sensitivity it is hampered by the metabolic inflexibility of switching between oxidation of glucose or fat.
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