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Diabetes and Physical Activity

Editor(s): Goedecke J.H. (Cape Town) 
Ojuka E.O. (Cape Town) 
Cover

The Effect of Exercise on Obesity, Body Fat Distribution and Risk for Type 2 Diabetes

Goedecke J.H.a, c · Micklesfield L.K.b, c

Author affiliations

aNon-Communicable Disease Research Unit, South African Medical Research Council, Cape Town, bMRC/Wits Developmental Pathways for Health Research Unit, Department of Paediatrics, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, and cUCT/MRC Research Unit for Exercise Science and Sports Medicine, Department of Human Biology, Health Sciences Faculty, University of Cape Town, Cape Town, South Africa

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Goedecke JH, Ojuka EO (eds): Diabetes and Physical Activity. Med Sport Sci. Basel, Karger, 2014, vol 60, pp 82-93

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Article / Publication Details

First-Page Preview
Abstract of  

Published online: September 09, 2014
Cover Date: 2014

Number of Print Pages: 12
Number of Figures: 2
Number of Tables: 0

ISBN: 978-3-318-02576-7 (Print)
eISBN: 978-3-318-02577-4 (Online)

Abstract

It is well known that obesity is a major risk factor for type 2 diabetes (T2D), while exercise is known to reduce body fatness and attenuate the risk of T2D. The aim of this chapter is to examine the interactions between exercise, obesity and body fat distribution, and the risk for T2D. Firstly, we show that body fatness, in particular visceral adipose tissue (VAT) accumulation, is associated with insulin resistance and incident T2D. We then show that aerobic exercise of sufficient intensity and volume results in a decrease in body fat and VAT. Conversely, sedentary behavior and physical inactivity are associated with increased body fat and VAT. Finally, the chapter examines the interaction between physical activity (PA), obesity and risk for T2D and shows that both obesity and PA are significant independent predictors of incident T2D, but the magnitude of risk imparted by high levels of body fat is much greater than that of low levels of PA. Further, we show that obese physically active individuals are at greater risk for incident T2D than normal-weight physically inactive individuals. The mechanisms underlying this complex interaction include the ability of exercise to increase free fatty acid oxidation to match high rates of lipolysis associated with obesity, as well as the effects of exercise on adipokine, cytokine and myokine secretion. Exercise, of sufficient volume and intensity, is therefore recommended to reduce obesity, centralization of body fat, and risk of T2D.

© 2014 S. Karger AG, Basel


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Article / Publication Details

First-Page Preview
Abstract of  

Published online: September 09, 2014
Cover Date: 2014

Number of Print Pages: 12
Number of Figures: 2
Number of Tables: 0

ISBN: 978-3-318-02576-7 (Print)
eISBN: 978-3-318-02577-4 (Online)


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