Electrocarbs.com

Crystalline Fructose gives a sustained release of energy and does not result in a sugar crash. Most sweeteners, like sucrose, dextrose, glucose, and high fructose corn syrup, give a rapid release of energy that is quickly depleted, leaving an athlete with low blood glycogen stores (insulin crash). The blood glucose levels are significantly more stable using (crystalline) fructose. Tests have shown that a norman man’s blood glycogen levels are significantly higher up to four hours after ingesting fructose as opposed to sucrose. (1) The slow absorption of fructose from the stomach and intestines, but rapid assimilation in the liver, can result in the prevention of protein (muscle) breakdown. During strenuous exercise, gluconeogenesis occurs as the liver works to replenish the depleted glucose levels in the blood. When glucose and glycogen levels are depleted, protein (muscle) is broken down to provide blood with sugar substrates. Fructose can provide a longer lasting supply of available substrates for gluconeogenesis, reducing muscle breakdown. (1)

(1) Goldstein, H.:Glucagon. In: Joslin’s Diabetes Mellitus. 11th edition (edited by Marble, A.,White, P., Bradley, R.F., and Krall, L. P.) Philadelphia, Lea+Febiger, 1971, pp. 131-145.