2022 Fiscal Year Final Research Report
Development of the chrono-nutrition-based dietary guideline for night shift workers and its validation using working space interventions
| Project/Area Number |
20K11559
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 59040:Nutrition science and health science-related
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| Research Institution | University of Hyogo |
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Principal Investigator |
Nagai Narumi 兵庫県立大学, 環境人間学部, 教授 (60364098)
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| Co-Investigator(Kenkyū-buntansha) |
坂根 直樹 独立行政法人国立病院機構(京都医療センター臨床研究センター), 臨床研究企画運営部, 研究室長 (40335443)
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| Project Period (FY) |
2020-04-01 – 2023-03-31
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| Keywords | chrono-nutrition / shift work / dietary guide / canteen / feeding experiment |
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| Outline of Final Research Achievements |
We carried out some studies to improve the diet of night and shift workers from a chrono-nutrition perspective and obtained the following interesting results: 1) We analyzed the menus served in the employee cafeteria of a manufacturing company and found that "high-fat, high-sugar" menus or foods were more likely to be selected late at night. 2) We reviewed dietary guides for shift workers published in the abroad and Japan, and prepared a "Japanese version of the Dietary Guide for Shift Workers". 3) We made 5 posters based on the contents of our developed Dietary Guide and uploaded them on the Internet. 4) A feeding experiment found that increased sleepiness and a kind of cognitive decline occurred temporarily after consuming a "high-fat, high-sugar" meal preferred late at night. 5) A 4-week RCT using a smartphone application that regulates circadian rhythms showed effects on reducing daytime sleepiness and academic performance in university students.
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| Free Research Field |
栄養生理学、時間栄養学、栄養教育
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| Academic Significance and Societal Importance of the Research Achievements |
わが国のインフラや都市機能は多くの夜間・交替制勤務者に支えられている。本課題では、時間栄養学の視点から研究を行い、夜間・交替制勤務者の食事改善に資する知見を得ることができた。社員食堂で深夜に選ばれやすいメニューの特徴や、その選択されやすい高脂肪・高甘味の食事が摂食後の眠気や認知機能に一過性に影響することを摂食試験で明らかにした。また国内外のガイドラインや既報を翻訳・整理し「日本版シフトワーカーのための食事ガイドライン案」を作成・公表したり、ポスターを作成するなど社会実装に向けた活動も行なった。以上の成果は夜間・交替制勤務者の健康を食の面から支え、活力ある社会の実現に貢献できるものと考えられる。
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