I aint buying their research. I would like to see more studies. Fructose is generally a slower digesting sugar. Apples for godsake are only about 35-40 on the GI. Some are higher such as Watermelon and Banannas. It isn't near as bad as dextrose, glucose, maltodextrin (sp?). Maybe they mean HIGH FRUCTOSE CORN SYRUP.
Following a low carb diet will make the body very insulin sensitive which can be a good thing for bodybuilders who are trying to trigger that insulin spike during the key anabolic window postworkout.