title: Effects of Supplementation with BCAA and L-glutamine on Blood Fatigue Factors and Cytokines in Juvenile Athletes Submitted to Maximal Intensity Rowing Performance.
abstract: [Purpose] This study was conducted to understand the impacts of BCAA (branched-chain amino acid) and glutamine supplementation on the degree of blood fatigue factor stimulation and cytokines along with performance of exercise at the maximal intensity. [Subjects] Five male juvenile elite rowing athletes participated in this study as the subjects; they took 3 tests and received placebo supplementation (PS), BCAA supplementation (BS), and glutamine supplementation (GS). [Methods] The exercise applied in the tests was 2,000 m of rowing at the maximal intensity using an indoor rowing machine, and blood samples were collected 3 times, while resting, at the end of exercise, and after 30 min of recovery, to analyze the blood fatigue factors (lactate, phosphorous, ammonia, creatine kinase (CK)) and blood cytokines (IL (interleukin)-6, 8, 15). [Results] The results of the analysis showed that the levels of blood phosphorous in the BS and GS groups at the recovery stage were decreased significantly compared with at the end of exercise, and the level of CK appeared lower in the GS group alone at recovery stage than at the end of exercise. The level of blood IL-15 in the PS and BS groups appeared higher at the end of exercise compared with the resting stage. [Conclusion] It seemed that glutamine supplementation had a positive effect on the decrease in fatigue factor stimulation at the recovery stage after maximal intensity exercise compared with supplementation with the placebo or BCAA. Besides, pre-exercise glutamine supplementation seemed to help enhance immune function and the defensive inflammatory reaction.
authors.affiliation: Laboratory of Exercise Physiology, Department of Physical Education, College of Sports Science, Dong-A University, Republic of Korea.
authors.forename: Ga Hee
authors.initials: GH
authors.lastname: Koo
authors.affiliation: Laboratory of Exercise Physiology, Department of Physical Education, College of Sports Science, Dong-A University, Republic of Korea.
authors.forename: Jinhee
authors.initials: J
authors.lastname: Woo
authors.affiliation: Department of Aero Physical Education, Republic of Korea Airforce Academy, Republic of Korea.
authors.forename: Sungwhun
authors.initials: S
authors.lastname: Kang
authors.affiliation: Laboratory of Exercise Physiology, Department of Physical Education, College of Sports Science, Dong-A University, Republic of Korea.
authors.forename: Ki Ok
authors.initials: KO
authors.lastname: Shin
keywords: BCAA; Exercise; Glutamine