Glutamine
The fourth part of the mixture is L-glutamine. Glutamine causes a notable increase in muscle glycogen storage through a mysterious and unknown mechanism. So supplementing with glutamine along can increase both glutamine and glycogen in muscle tissue. I recommend taking at the least, 5-10 grams of L-glutamine to allow for recompensation of glycogen. One study looked at the effects of an intravenous (IV) drip of glutamine. The drip raised blood Glutamine levels to about 70% above the normal range. This increase in blood glutamine levels significantly increased muscle glycogen deposition in humans. Notice that I did not say lab animals? (5).
The results of a research, which Paul Cribb from AST Sports Science spoke about were awesome. This study reported that 8-grams of L-glutamine taken directly after exercising promoted an equivalent glycogen storage effect as 61-grams of glucose would have. This proves that L-glutamine is very effective in increasing muscle energy stores. This news has great implications for athletes that want to build muscle mass, especially while on a calorie-restricted diet (6).
Glucose is the fuel, which powers intense exercise. Muscle glycogen is an athlete's fuel tank for glucose. Glutamine appears to enhance the refueling of glycogen while increasing the amount of fuel stored! Enhancing glycogen build-up in muscles not only means harder more intense workouts it means speedy recovery as well. Not to mention that it is a potent anabolic signal in muscle cells because the more glycogen storage ability in muscle cells the more cellular swelling and protein synthesis can occur. Even when on a calorie-restricted diet regimen, bodybuilders should gain muscle mass using glutamine directly following intense training sessions. The addition of L-glutamine to post-workout supplementation enhances glycogen storage and provides potent anabolic effects from training (6).
