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kentucky
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from protraineronline.com...
The problem with fructose is that your muscles do not use it to replenish muscle glycogen stores. Glucose, in the form of complex carbohydrates, is a superior fuel for replenishing muscle glycogen. Your liver is able to store up to 100 grams of glycogen, and your muscles can store between 250 – 400 grams of glycogen. Muscle tissue has a specialized function (contraction), and does not have the various enzymes to inter-convert many metabolic intermediates. Muscle tissue can solely use glucose to replenish its glycogen stores. The liver is a very versatile metabolic organ and is able to recover its glycogen stores from a variety of different sources, including lactate, fructose, glucose, and amino acid metabolites. So if you were to ingest glucose in the form of complex carbohydrates, your liver would allow the glucose to pass through to the muscles for replenishment, in an attempt to keep the entire body in balance. Fructose in these nutrition bars replenishes your liver glycogen stores, and once your liver glycogen is full, any other simple sugars will have the propensity to be stored as fat. This occurs because fructose skips the regulatory enzyme phsophfructokinase-I, which is responsible, for making sure glycogen stores are full before fat synthesis is switched on. Nutrition bars full of fructose are probably something you want to do without.
it appears only fructose replenishes these stores....
The problem with fructose is that your muscles do not use it to replenish muscle glycogen stores. Glucose, in the form of complex carbohydrates, is a superior fuel for replenishing muscle glycogen. Your liver is able to store up to 100 grams of glycogen, and your muscles can store between 250 – 400 grams of glycogen. Muscle tissue has a specialized function (contraction), and does not have the various enzymes to inter-convert many metabolic intermediates. Muscle tissue can solely use glucose to replenish its glycogen stores. The liver is a very versatile metabolic organ and is able to recover its glycogen stores from a variety of different sources, including lactate, fructose, glucose, and amino acid metabolites. So if you were to ingest glucose in the form of complex carbohydrates, your liver would allow the glucose to pass through to the muscles for replenishment, in an attempt to keep the entire body in balance. Fructose in these nutrition bars replenishes your liver glycogen stores, and once your liver glycogen is full, any other simple sugars will have the propensity to be stored as fat. This occurs because fructose skips the regulatory enzyme phsophfructokinase-I, which is responsible, for making sure glycogen stores are full before fat synthesis is switched on. Nutrition bars full of fructose are probably something you want to do without.
it appears only fructose replenishes these stores....
