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Obes Rev. 2006 May;7(2):219-26.

Glycaemic index effects on fuel partitioning in humans.

Diaz EO, Galgani JE, Aguirre CA.

Laboratory of Energy Metabolism and Stable Isotopes, Institute of Nutrition and Food Technology (INTA), University of Chile, Macul, Santiago, Chile.

The purpose of this review was to examine the role of glycaemic index in fuel partitioning and body composition with emphasis on fat oxidation/storage in humans. This relationship is based on the hypothesis postulating that a higher serum glucose and insulin response induced by high-glycaemic carbohydrates promotes lower fat oxidation and higher fat storage in comparison with low-glycaemic carbohydrates. Thus, high-glycaemic index meals could contribute to the maintenance of excess weight in obese individuals and/or predispose obesity-prone subjects to weight gain. Several studies comparing the effects of meals with contrasting glycaemic carbohydrates for hours, days or weeks have failed to demonstrate any differential effect on fuel partitioning when either substrate oxidation or body composition measurements were performed. Apparently, the glycaemic index-induced serum insulin differences are not sufficient in magnitude and/or duration to modify fuel oxidation

Originally Posted by lylemcd

This sort of sums it up

When calories are controlled, there doesn't appear to be a big difference; that would be the big issue of course, controlling food intake with a lot of sugar (not very filing, in general)

In ad-lib diets, people tend to eat more when they eat a lot of sugar

edit: also worth noting that many ofthe foods that bodybuilders conside OK in terms of getting lean ripped are higher on the GI than sucrose (which is actually quite low due to the fructose component). You have to reach pretty far up your ass to explain why you can get ripped on something like yams (or fucking rice cakes) but table sugar will prevent it.

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Obes Rev. 2003 May;4(2):91-9. Related Articles, Links

Effects of sugar intake on body weight: a review.

Vermunt SH, Pasman WJ, Schaafsma G, Kardinaal AF.

TNO Nutrition and Food Research, Department of Nutritional Physiology, Zeist, the Netherlands. Vermunt@voeding.tno.nl

Weight reduction programmes are mainly focused on reducing intake of fat and sugar. In this review we have evaluated whether the replacement of dietary (added) sugar by low-energy sweeteners or complex carbohydrates contributes to weight reduction. In two experimental studies, no short-term differences in weight loss were observed after use of aspartame as compared to sugar in obese subjects following a controlled energy-restricted diet. However, consumption of aspartame was associated with improved weight maintenance after a year. In two short-term studies in which energy intake was not restricted, substitution of sucrose by artificial sweeteners, investigated mostly in beverages, resulted in lower energy intake and lower body weight. Similarly, two short-term studies, comparing the effect of sucrose and starch on weight loss in obese subjects did not find differences when the total energy intake was equal and reduced. An ad libitum diet with complex carbohydrates resulted in lower energy intake compared to high-sugar diets. In two out of three studies, this was reflected in lower body weight in subjects consuming the complex carbohydrate diet. In conclusion, a limited number of relatively short-term studies suggest that replacing (added) sugar by low-energy sweeteners or by complex carbohydrates in an ad libitum diet might result in lower energy intake and reduced body weight. In the long term, this might be beneficial for weight maintenance. However, the number of studies is small and overall conclusions, in particular for the long term, cannot be drawn.