I do think that there is such thing as too little carbohydrate for endurance, but I think the "fat-adaptation" point is valid in this context. There is a neat review of ketogenic diets for physical performance here Nutrition & Metabolism | Full text | Ketogenic diets and physical performance The first experiment listed doesn't really suit our needs but the second one looks pretty good. Indeed, fat-adaptation appears to be a real phenomenon.
There might be such thing as too little carbohydrate for athletes long-term, though. It can elevate serum cortisol levels. But I don't think that fat is the bad guy here.
Last edited by Stabby; 10-25-2011 at 10:30 PM.
Stabbing conventional wisdom in its face.
Anyone who wants to talk nutrition should PM me!