Editing Carbohydrate loading (section)

==Diet composition==
The composition of carbohydrates in the athlete's diet during carbohydrate loading is as important as their share of the overall caloric regimen.{{Citation needed|reason=Reliable source needed for the whole sentence|date=December 2015}}

Most dietary carbohydrates consist of varying proportions of two simple sugars, [[glucose]] and [[fructose]]. Fructose may be metabolized into [[liver]] [[glycogen]],{{Citation needed|reason=Reliable source needed for the whole sentence|date=September 2015}} but it is ineffective at raising muscle glycogen levels (which is the objective of carbohydrate loading).{{Citation needed|reason=No mention of fructose in original source|date=September 2018}} Consequently, sources of high-fructose carbohydrates, such as fruit and sugar-based foods, are less than optimal for the task. The classic carb-loading meal is [[pasta]], whose caloric content is primarily due to [[starch]], a polymer of glucose. Other high-starch meals which include [[bread]], [[rice]], and [[potatoes]] are also part of the correct regimen.