THE EFFECTS OF L-THEANINE ON SLEEP USING THE ACTIGAPH
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- OZEKI Makoto
- Taiyo Kagaku Co,, Ltd.
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- JUNEJA Lekh Raj
- Taiyo Kagaku Co,, Ltd.
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- SHIRAKAWA Shuichiro
- National Institute of Mental Health, National Center of Neurology and Psychiatry
Bibliographic Information
- Other Title
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- アクチグラフを用いたL-テアニンの睡眠改善効果の検討
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Abstract
The physiological effect of L-theanine, an amino acid from tealeaves, on sleep was investigated using questionnaire and actigraph. A cross over double blind study with placebo as control was performed. Four tablets containing 200 mg of L-theanine were ingested I hour before bedtime. Recovery from fatigue and an extension in sleep-time was felt during the ingestion of L-theanine in 22 volunteers (p < 0.05). The actigraph data showed a significant improvement in sleep efficiency and (p < 0.05), and decrease of wake after sleep onset (WASO) (p < 0.05) in I O students. However, total-sleep-time was not significantly different between L-theanine and placebo treatments. The physiological effects of L-theanine on sleep was to improve sleep quality.
Journal
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- Japanese Journal of Physiological Anthropology
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Japanese Journal of Physiological Anthropology 9 (4), 143-150, 2004
Japan Society of Physiological Anthropology
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Keywords
Details 詳細情報について
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- CRID
- 1390282679431677440
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- NII Article ID
- 110002510948
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- NII Book ID
- AN1052804X
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- ISSN
- 24320986
- 13423215
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- Text Lang
- ja
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- Data Source
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- JaLC
- CiNii Articles
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- Abstract License Flag
- Disallowed