I’m pretty sure grape juice is dextrose, hence the reason why so many people use it as a high-GI base for creatine.
Nope, fructose and glucose, apparantly -
“Welch’s Purple 100% Grape Juice contains a naturally high amount of the natural sugars fructose and glucose.”
“100% white grape juice has an even balance of fructose and glucose.”
I’ve too read somewhere that all natural fruit juices have some level of fructose in them. Grape juice and cranberry juice just have the least amount of fructose of all commercially available fruit juices. But I agree, any amount of fructose is not at all desirable for PWO. Also, most natural fruit juices (including grape juice) have a certain amount of sucrose in them as well, which is not the best carb for PWO either.
Natural grape juice also has a moderately low 58 GI and 24 GL per 240ml serving, so its GI/GL doesn’t look particularly attractive for a PWO drink either.
So, I’ve never understood the many recommendations I’ve seen even among “experts” that grape juice is optimal for PWO. Please, tell me what I might be missing. I really want to know because I’ve always liked the taste of grape juice.