The Effect Of L-theanine Supplementation On The Immune System Of Athletes Exposed To Strenuous Physical Exercise
Notes for this study:
||%. After supplementation. Placebo: pre-exercise 45.5 ± 3.58, post-exercise 43.4 ± 7.35, post-recovery: 49.9 ± 6.04 Theanine: pre-exercise 46.4 ± 3.69, post-exercise 41.9 ± 5.37, post-recovery: 51.3 ± 6.25
|Number of Subjects
In this 6-week randomized, controlled trial, 20 male professional rowers took 150 mg of l-theanine or placebo daily during an intense training camp.
Power on the 2000 m rowing ergometer didn't differ between theanine and placebo, and neither did lactate or time performance. Il-10 was higher after exercise and lowerduring recovery, IL-2 was higher after exercise, and the same during recovery, IL-4, and IFN weren't different. Tregs were higher during recovery but not after exercise, NK cells weren't different, Tδγ cel cells weren't different, and cytotoxic t-cells were higher after exercise, but this wasn't statistically significant. There didn't seem to be notable differences for white blood cells, granulocytes, lymphocytes or total antioxidant capacity between groups.