Over the past 50 years, a significant amount of research has shown the important role of glycogen for delaying fatigue in athletes competing in endurance and ultra endurance events. Glycogen is the storage form of carbohydrates. In humans, small amounts of glycogen are also found in tissues and cells, like the kidneys, red blood cells and brain. Glycogen is primarily stored primarily in the cells of the liver (~100g) and skeletal muscle (~500g). Skeletal muscles transform chemical energy to mechanical work. Glycogen is the body's predominant source of energy during moderate to high intensity activity. The depletion of muscle glycogen during endurance activity causes early fatigue. Dietary carbohydrates are converted to glucose - the main source of energy for the body and brain. For the non-diabetic population, when you eat a carb-rich meal, your blood glucose will rise. Increased blood glucose signals the pancreas to produce insulin - a very important hormone that helps the...
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