Effects of L-Theanine Administration on Stress-Related Symptoms and Cognitive Functions in Healthy Adults: A Randomized Controlled Trial.
L-theanine
cognition
emotion
sleep
stress
Journal
Nutrients
ISSN: 2072-6643
Titre abrégé: Nutrients
Pays: Switzerland
ID NLM: 101521595
Informations de publication
Date de publication:
03 Oct 2019
03 Oct 2019
Historique:
received:
20
08
2019
revised:
26
09
2019
accepted:
29
09
2019
entrez:
19
10
2019
pubmed:
19
10
2019
medline:
7
3
2020
Statut:
epublish
Résumé
This randomized, placebo-controlled, crossover, and double-blind trial aimed to examine the possible effects of four weeks L-theanine administration on stress-related symptoms and cognitive functions in healthy adults. Participants were 30 individuals (nine men and 21 women; age: 48.3 ± 11.9 years) who had no major psychiatric illness. L-theanine (200 mg/day) or placebo tablets were randomly and blindly assigned for four-week administration. For stress-related symptoms, Self-rating Depression Scale, State-Trait Anxiety Inventory-trait, and Pittsburgh Sleep Quality Index (PSQI) scores decreased after L-theanine administration (
Identifiants
pubmed: 31623400
pii: nu11102362
doi: 10.3390/nu11102362
pmc: PMC6836118
pii:
doi:
Substances chimiques
Glutamates
0
Placebos
0
theanine
8021PR16QO
Types de publication
Journal Article
Randomized Controlled Trial
Langues
eng
Sous-ensembles de citation
IM
Subventions
Organisme : Funding received from Taiyo Kagaku Co., Ltd., Mie, Japan.
ID : None
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