Branched Chain Amino Acid As A Supplement For Long...

Branched Chain Amino Acid as a Supplement for Long Duration Exercise Introduction Branched Chain Amino Acids (BCAAs) are composed of three essential amino acids including leucine, isoleucine, and valine. They are unique in that they are predominantly metabolized outside of the liver in the skeletal muscle. BCAAs make up 35-40% of the amino acid pool in the body and exist in high concentrations in skeletal muscle tissue (Shimomura et al, 2006). While the supplemental dosage is dependent upon on the type of exercise,, body composition, and dietary intake, a standard dosage of the combination of BCAAs is 20g, of leucine, isoleucine, and valine. Other ratio combinations are available as well as individual supplement products of leucine and isoleucine. BCAA supplementation is often taken before, during, and after exercise. It has been observed that BCAAs potentiate the effects of exercise by their anabolic processes on protein metabolism by increasing the rate of muscle protein synthesis and decreasing the rate of muscle protein breakdown (Karlsson et al., 2004 ). Moreover, it has been theorized that BCAAs may improve performance, reduce muscle fatigue, and feelings of muscle soreness. Review of Literature Various studies have demonstrated that BCAAs promote activation of protein synthesis, reduced muscle degradation, and reduce perceived feelings of muscle fatigue. All human studies reviewed used randomized, double blind, within subjects cross-over design conductedShow MoreRelatedThe Health Fitness Human Performance Essay1498 Words   |  6 Pagesessential in preparation for strenuous physical activity or exercise. As part of focus on nutrition, athletes need to consider various factors that contribute to nutrition in relation to physical activity and exercise. Some of these important considerations include certain types of food and food sources that help in preparation for physical activity, heath, fitness, and human performance. 4. What is glycogen? Why is it important for exercise? 5. What are some activities that are high energy expenditure