a decreasing trendP = 0.073
As the change in the total score in the matcha group compared with that in the placebo group showed a decreasing trend ( P = 0.073), theanine was suggested to improve sleep quality.
As the change in the total score in the matcha group compared with that in the placebo group showed a decreasing trend ( P = 0.073), theanine was suggested to improve sleep quality.