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Kawai T, Kagami-Katsuyama H, Satoh K, Futami T, Kimoto-Nira H, Nishihira J, Tanaka K, Matsumoto T, Shimazaki H, Yagi S, Sase K, Tanigawa K, Maeda-Yamamoto M. The Effect of Nutrients on Subjective Accomplishment at Work: Results from a Health Survey and a Single-Arm Dietary Intervention Study. Nutrients 2024; 16:1410. [PMID: 38794648 PMCID: PMC11124383 DOI: 10.3390/nu16101410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2024] [Revised: 04/28/2024] [Accepted: 05/04/2024] [Indexed: 05/26/2024] Open
Abstract
In Japan, many workers are exposed to chronic stress, sleep deprivation, and nutritional imbalance. They tend still to go to work when ill, leading to decreased work performance and productivity, which has become a major social problem. We conducted a human entry study with the aim of finding a link between these two factors and proposing an optimized diet, believing that a review of diet may lead to an improvement in labor productivity. In this study, we used subjective accomplishment (SA) as a measure of productivity. First, we compared nutrient intake between groups with high and low SA using data from a health survey of 1564 healthy male and female adults. Significant differences were found in the intake of 13 nutrients in males and 15 nutrients in females, including potassium, vitamin A, insoluble fiber, and biotin. Recommended daily intake of these nutrients was determined from survey data. Next, we designed test meals containing sufficient amounts of 17 nutrients and conducted a single-arm intervention study (registration code UMIN000047054) in Kameyama City, Mie Prefecture, Japan. Healthy working adults (males and females aged 20-79 years) were recruited and supplied with test meals, which were eaten once a day 5 days a week for 8 weeks. SA was significantly higher and daytime sleepiness (DS) was significantly lower after lunch on workdays in younger participants (under 60 years) when they ate the test meals as breakfast or lunch. Our results suggest that SA and DS, which change daily, are strongly influenced by the meal eaten before work, and that taking the 17 nutrients may help prevent presenteeism and improve labor productivity.
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Affiliation(s)
- Takayuki Kawai
- Institute of Food Research, National Agriculture and Food Research Organization, Tsukuba 305-8642, Japan
| | - Hiroyo Kagami-Katsuyama
- Department of Medical Management and Informatics, Hokkaido Information University, Ebetsu 069-8585, Japan
| | - Koji Satoh
- Department of Medical Management and Informatics, Hokkaido Information University, Ebetsu 069-8585, Japan
| | - Takashi Futami
- Institute of Food Research, National Agriculture and Food Research Organization, Tsukuba 305-8642, Japan
| | - Hiromi Kimoto-Nira
- Institute of Food Research, National Agriculture and Food Research Organization, Tsukuba 305-8642, Japan
| | - Jun Nishihira
- Department of Medical Management and Informatics, Hokkaido Information University, Ebetsu 069-8585, Japan
| | | | | | | | | | - Kohei Sase
- Department of Health and Welfare, Kameyama City Office, Kameyama 519-0164, Japan
| | - Kenji Tanigawa
- Department of Internal Medicine, Kameyama Municipal Medical Center, Kameyama 519-0163, Japan
| | - Mari Maeda-Yamamoto
- Institute of Food Research, National Agriculture and Food Research Organization, Tsukuba 305-8642, Japan
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Nakagawasai O, Yamada K, Takahashi K, Oshima Y, Hayasaka S, Shoji K, Nemoto W, Tan-No K. Effect of Globin Digests on Physical Fatigue in Mice. Biol Pharm Bull 2023; 46:1027-1030. [PMID: 37394635 DOI: 10.1248/bpb.b23-00193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/04/2023]
Abstract
Globin digest (GD) inhibits dietary hypertriglyceridemia; however, its effects on physical fatigue remain unknown. Therefore, this study aimed to investigate the potential anti-fatigue effects of GD. Repeated administration of GD and valine (Val)-Val-tyrosine (Tyr)-proline (Pro), a component of GD, for five days prevented the forced walking-induced decrease in locomotion. Furthermore, GD treatment reversed the forced walking-induced increase in blood lactate levels in mice and increased phosphorylated AMP-activated protein kinase (p-AMPK) in the soleus muscle, suggesting that the anti-fatigue effect of GD involves AMPK activation in the soleus muscle through reduced blood lactate.
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Affiliation(s)
- Osamu Nakagawasai
- Division of Pharmacology, Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University
| | | | - Kohei Takahashi
- Division of Pharmacology, Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University
- Department of Pharmacology, School of Pharmacy, International University of Health and Welfare
| | - Yuko Oshima
- Division of Pharmacology, Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University
| | - Sena Hayasaka
- Division of Pharmacology, Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University
| | - Kazuaki Shoji
- Division of Pharmacology, Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University
| | - Wataru Nemoto
- Division of Pharmacology, Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University
| | - Koichi Tan-No
- Division of Pharmacology, Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University
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Zhu H, Zeng W, Zhao T, Shi W, Dong X, Zhang A, Li X, Xu L. Synthesis and evaluation of 5-aminimidazole-4-carboxamide riboside derivatives as anti-fatigue agents. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.104313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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