Alright, here's the blurb from the other list:
***There are many more types of sugars than those three but they are the most common. Glucose is the type of sugar that we use in metabolism - before any other type of sugar can be used, it must be converted to glucose. Consuming pure glucose will increase your blood sugar very rapidly (it has a high glycemic index). Fructose is similar in structure to glucose, but must be converted to glucose in the liver before it can be used, this is why it does not increase blood sugar very quickly, and therefore has a surprisingly low glycemic index. Sucrose is a disaccharide, which means it is two sugars attached together, and these two sugars happen to be glucose and fructose. So before sucrose can be absorbed in the small intestine, the enzyme "sucrase" cuts it in half and you then get a glucose and fructose. Not surprisingly, sucrose has a glycemic index right in between glucose and fructose.
Starch, which is usually our main source of carbohydrate as humans, is composed of very long chains glucose. Pure starch can be digested very easily, and although is considered to be a "complex carbohydrate", it alone, or in very refined products such a white bread, has a very high glycemic index.
They all provide energy, and the energy required to get glucose from fructose and sucrose is very small, so they can be considered equal in energy based on the amount (weight) consumed. This comes out to 4.1 Calories per gram.
By the way, big-C "Calories" actually means "kilocalories", which is a thousand little-c "calories". So an apple, for example, has around 100 Calories = 100 kilocalories = 100,000 calories.
They continue:<does it realte to food groups and what is essentially good and bad?For climbers (an other athletes) what is the best way to think ofthese sugars in terms of consmuption in times of active and postactive movement.>
*** During exercise and post-exercise, it is best to consume foods with a high glycemic index that are easily digestible, such as sports drinks or those Goo packets. Around exercise, because our body is actively using up sugars to fuel muscle contraction, the rapid increase in blood glucose is not a problem, it is in fact helpful.
Personally, I don't consume anyting but water unless my workout is longer than 2 hours. Glycogen depletion is probably not a problem in that period of time. But, carbohydrates post-exercise is definitely a good idea, because we are able to pack carbohydrates into the muscles more quickly at that time. Sports drinks and goo are fine for this, but a bagel with jam, a banana, or fruit juice are all acceptable, because they digest fairly quickly and have fairly high glycemic indices. Most people I know prefer to eat "real food" over supplements. Also, real foods have more vitamins and minerals which are useful too.
If you are having a long outdoor climbing day, you don't need to worry about it as much, just snack on things that are high in carbs, low in fat, low-moderate in protein, and have low or moderate glycemic indices.
Lastly, none of them are "good" or "bad". Some are more appropriate sometimes, and others are more appropriate at other times. If you eat enough of any one of them you'll get sick!
Hope this helps,Andrew Pacey
-----Really, really friggin long, and probably way, way more info than you wanted, but hopefully it's clear enough . . .