| Project/Area Number |
23370106
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Applied anthropology
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| Research Institution | Fukuoka Women's University |
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Principal Investigator |
MORITA Takeshi 福岡女子大学, 人間・環境学研究科(研究院), 教授 (20326474)
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| Co-Investigator(Kenkyū-buntansha) |
TSUMURA Yuki 純真短期大学, 食物栄養学科, 助教 (00457417)
WAKAMURA Tomoko 京都大学, 医学研究科, 教授 (40240452)
FUKUDA Yumi 福岡女子大学, 人間環境学部, 助手 (50551412)
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| Project Period (FY) |
2011-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥20,410,000 (Direct Cost: ¥15,700,000、Indirect Cost: ¥4,710,000)
Fiscal Year 2013: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2012: ¥6,890,000 (Direct Cost: ¥5,300,000、Indirect Cost: ¥1,590,000)
Fiscal Year 2011: ¥8,580,000 (Direct Cost: ¥6,600,000、Indirect Cost: ¥1,980,000)
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| Keywords | 環境適応能 / 生体リズム / 光環境 / 睡眠 / 光 / 栄養学 |
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| Research Abstract |
The purpose of this study is to investigate effects of tryptophan intake and light exposure on sleep and melatonin secretion, by modifying tryptophan ingestion at breakfast and light exposure during the daytime, and measuring sleep quality and melatonin secretion at night. Thirty three of male University students completed the experiments lasting 5 days and 4 nights. The subjects were randomly divided into 4 groups: tryptophan-poor breakfast (55mg/meal) in the morning and dim light environment (<50lx) during daytime, tryptophan-rich breakfast (476mg/meal) and dim light, tryptophan-poor breakfast and bright light (>5000lx), tryptophan-rich breakfast and bright light. Saliva melatonin concentrations on the fourth day was significantly lower than on the first day in Poor*Dim, whereas it was higher on the fourth day in Rich*Bright. The result indicates that the combination of a tryptophan-rich breakfast and bright light exposure during daytime could promote melatonin secretion at night.
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