Non-NGSS Articles

Effects of Supplementation on Blood Fatigue Factors

Effects of Supplementation with BCAA and L-glutamine on Blood Fatigue Factors and Cytokines in Juvenile Athletes Submitted to Maximal Intensity Rowing Performance

SUMMARY: This article looked at the amount of lactate, phosphorus, ammonia, and creatine kinase in blood after an intense workout, as well as the amount of blood cytokines (IL-6, IL-8, IL-15). Five subjects were used, all males. All were given either a placebo, a branched-chain amino acids (BCAA) supplement, or a glutamine supplement. The results and discussion were based off the comparing the BCAA and Glutamine supplement results with the placebo results. The researchers came to the conclusion that glutamine could be helpful in decreasing an inflammatory response after working out.

LESSON COMMENTS: This is a study for students to read critically; a “what not to do” paper, if you will. There are a number of issues with this study, from small sample size to a very liberal way of analyzing the results and drawing the final conclusion. While the introduction does a good job of explaining the role of the supplements and blood by-products, the discussion repeats many of the same points as the introduction.

Koo, G. H., Woo, J., Kang, S., & Shin, K. O. (2014). Effects of Supplementation with BCAA and L-glutamine on Blood Fatigue Factors and Cytokines in Juvenile Athletes Submitted to Maximal Intensity Rowing Performance. Journal of physical therapy science, 26(8), 1241-6.