Estrogen is an important anabolic hormone in women. Some women find that DHEA provides benefits similar to estrogen, since DHEA favorably cascades down into estrogen in most women. Balance Anyone interested in muscle building needs to be aware of the importance of maintaining a positive nitrogen balance. A positive nitrogen balance indicates that the body is receiving the optimum amount of protein that's required for muscle growth. Research shows that levels of glutamine are closely associated with muscle protein synthesis.
Creatine is another amino acid that is phosphorylated in the muscles to store energy.
Creatine is a natural by-product of liver, kidney, and pancreas metabolism. Over 70 years ago, it was found that creatine was associated with weight gain and improved nitrogen balance. The most stable and cost-effective form sold today is creatine monohydrate. It is one of the few supplements available to athletes that has legitimate research studies backing its benefits. Recent studies reveal that combining creatine with high-glycemic carbohydrates such as grape juice will elicit an insulin response that will drive more creatine into muscle cells.