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Exercise training has greater effects on insulin sensitivity in daughters of patients with type 2 diabetes than in women with no family history of diabetes

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Barwell, Nicholas D., Malkova, Dalia, Moran, Colin N., Cleland, Steve J., Packard, Christopher J., Zammit, Victor A. and Gill, J. M. R. (Jason M. R.) (2008) Exercise training has greater effects on insulin sensitivity in daughters of patients with type 2 diabetes than in women with no family history of diabetes. Diabetologia, Volume 51 (Number 10). pp. 1912-1919. doi:10.1007/s00125-008-1097-6

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Official URL: http://dx.doi.org/10.1007/s00125-008-1097-6

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Abstract

Aims/hypothesis. Sedentary offspring of patients with type 2 diabetes are often more insulin-resistant than persons with no family history of diabetes, but when active or fit offspring of type 2 diabetic patients are compared with non-diabetic persons, differences in insulin resistance are less evident. This study aimed to determine the effects of an exercise training intervention on insulin sensitivity in both groups.

Methods. Women offspring (n=34) of type 2 diabetic patients (offspring age 35.6+/-7.0 years, BMI 28.1+/-5.1 kg/m(2)) and 36 matched female controls (age 33.6+/-6.1 years, BMI 27.3+/-4.7 kg/m(2)) participated. Body composition, fitness and metabolic measurements were made at baseline and after a controlled 7 week exercise intervention.

Results. At baseline, insulin sensitivity index (ISI) was 22% lower in offspring than controls (p < 0.05), despite similar body fat and maximal oxygen uptake ((V)over dotO(2max)) values in the two groups. ISI increased by 23% (p < 0.05) in offspring following the exercise intervention, compared with 7% (NS) in the controls. Increases in ((V)over dotO(2max))were similar in both groups (controls 12%, offspring 15%, p < 0.05 for both). Plasma leptin concentrations decreased significantly in the offspring (-24%, p < 0.01) but not in controls (0%, NS). Change in ISI correlated significantly with baseline ISI (r=-0.47, p < 0.0005) and change in leptin (r=-0.43, p < 0.0005). The latter relationship was not attenuated by adjustment for changes in body fat.

Conclusions/interpretation. Offspring, but not controls, significantly increased ISI in response to an exercise intervention, indicating that insulin sensitivity is more highly modulated by physical activity in daughters of patients with type 2 diabetes than in women with no family history of the disease.

Item Type: Journal Article
Subjects: Q Science > QP Physiology
R Medicine > RC Internal medicine
Divisions: Faculty of Medicine > Warwick Medical School > Biomedical Sciences > Translational & Experimental Medicine > Metabolic and Vascular Health (- until July 2016)
Faculty of Medicine > Warwick Medical School
Library of Congress Subject Headings (LCSH): Non-insulin-dependent diabetes -- Exercise therapy, Non-insulin-dependent diabetes -- Genetic aspects, Insulin resistance, Leptin, Sedentary behavior
Journal or Publication Title: Diabetologia
Publisher: Springer
ISSN: 0012-186X
Official Date: October 2008
Dates:
DateEvent
October 2008Published
Volume: Volume 51
Number: Number 10
Number of Pages: 8
Page Range: pp. 1912-1919
DOI: 10.1007/s00125-008-1097-6
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
Funder: British Heart Foundation
Grant number: PG/03/145 (BHF)

Data sourced from Thomson Reuters' Web of Knowledge

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