Studies related to Lymphocyte Count and Theanine

The Effect Of L-theanine Supplementation On The Immune System Of Athletes Exposed To Strenuous Physical Exercise

Effect None
Values %. After supplementation. Placebo: pre-exercise 44.98 ± 3.39, post-exercise 47.62 ± 6.99, post-recovery: 40.17 ± 6.19 Theanine: pre-exercise 43.48 ± 3.08, post-exercise 48.36 ± 4.93, post-recovery: 38.79 ± 5.35
Trial Design Randomized trial
Trial Length 1-6 months
Number of Subjects 20
Sex Male
Body Types Trained
Notes for this study:
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.