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Effects of chewing frequency, saliva volume, and amylase activity on postprandial blood sugar levels

Research Project

Project/Area Number 21K17062
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 57050:Prosthodontics-related
Research InstitutionNiigata University

Principal Investigator

Uehara Fumiko  新潟大学, 医歯学総合病院, 医員 (50878288)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2023: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2022: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords咀嚼 / 食後血糖 / アミラーゼ活性 / 糖尿病 / 食後血糖値 / 唾液 / 血糖値 / 肥満 / アミラーゼ / モニタリング / BMI / 唾液量
Outline of Research at the Start

本研究では,糖尿病などの生活習慣病患者,その予備群を対象とした咀嚼行動のモニタリングと唾液中の消化酵素であるアミラーゼ活性および唾液量,舌圧,咬合力,咀嚼能率等の口腔機能検査を行う.咀嚼行動としては,bitescanシステムにより規定量のおにぎり(1個 100g)摂取時の咀嚼回数・取り込み回数,摂取時間・咀嚼スピード・一口当たり回数等を測定する.食後血糖値は,簡易型血糖測定器を用いて,食後血糖値を食後2時間計測する.唾液量はサクソンテストにより測定し,アミラーゼ活性は唾液アミラーゼモニターを使用して測定する.

Outline of Final Research Achievements

Obesity is the biggest risk factor for diabetes, and there is a proportional relationship between obesity and diabetes, so it can be said that the fewer times a person chews, the more likely they are to develop diabetes. However, on the other hand, there are reports that it can suppress the rise in blood sugar levels after meals it is better to chew less frequently. Why are there these conflicting reports? Therefore, in this research project, we posed the fundamental question, "Are people who chew more less likely to be obese or diabetic? If there is a difference in obesity level with the same number of chews, what is the difference?'' We focused on saliva, which is an element other than grinding, and aimed to clarify the relationship between the number of mastication, saliva volume and components (amylase activity), and blood sugar levels.
The results of this study indicate that differences in amylase activity in healthy adults may influence blood glucose level 30 minutes after a meal.

Academic Significance and Societal Importance of the Research Achievements

本研究では、アミラーゼ活性と相関を認めたものは、30分後の食後血糖(R2=0.2045、弱い相関)、唾液量と相関を認めたものは、咀嚼能率(R2=0.1008、極めて弱い相関)だった。アミラーゼ活性が高い被験者の方が咀嚼回数が少なく、咀嚼能率が低くかったが、30分後、60分後の食後血糖値は高かった。過去の研究では、よく咀嚼され食物の粒子が細かくなることでより早く血糖値が上がると指摘する研究があったが、今回の結果とは異なっている。
今回の結果は、咀嚼回数以外にも、個人の唾液中のアミラーゼ活性の違いによって食後血糖値に差が生じる可能性があることを示唆している。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (12 results)

All 2022 2021

All Journal Article (7 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 7 results,  Open Access: 5 results) Presentation (5 results)

  • [Journal Article] Masticatory Behavior Change with a Wearable Chewing Counter: A Randomized Controlled Trial2022

    • Author(s)
      Hori S.、Hori K.、Yoshimura S.、Uehara F.、Sato N.、Hasegawa Y.、Akazawa K.、Ono T.
    • Journal Title

      Journal of Dental Research

      Volume: 102 Issue: 1 Pages: 21-27

    • DOI

      10.1177/00220345221118013

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Features of Masticatory Behaviors in Older Adults with Oral Hypofunction: A Cross-Sectional Study2022

    • Author(s)
      Hatayama Chikako、Hori Kazuhiro、Izuno Hiromi、Fukuda Masayo、Sawada Misao、Ujihashi Takako、Yoshimura Shogo、Hori Shoko、Togawa Hitomi、Uehara Fumiko、Ono Takahiro
    • Journal Title

      Journal of Clinical Medicine

      Volume: 11 Issue: 19 Pages: 5902-5902

    • DOI

      10.3390/jcm11195902

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Relationship between body mass index and masticatory factors evaluated with a wearable device2022

    • Author(s)
      Yoshimura Shogo、Hori Kazuhiro、Uehara Fumiko、Hori Shoko、Yamaga Yoshio、Hasegawa Yoko、Akazawa Kohei、Ono Takahiro
    • Journal Title

      Scientific Reports

      Volume: 12 Issue: 1 Pages: 4117-4117

    • DOI

      10.1038/s41598-022-08084-5

    • Related Report
      2022 Research-status Report 2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Impact of Masticatory Behaviors Measured With Wearable Device on Metabolic Syndrome: Cross-sectional Study2022

    • Author(s)
      Uehara Fumiko、Hori Kazuhiro、Hasegawa Yoko、Yoshimura Shogo、Hori Shoko、Kitamura Mari、Akazawa Kohei、Ono Takahiro
    • Journal Title

      JMIR mHealth and uHealth

      Volume: 10 Issue: 3 Pages: e30789-e30789

    • DOI

      10.2196/30789

    • Related Report
      2022 Research-status Report 2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Effect of maximal voluntary tongue pressure and mechanical properties of gels on tongue pressure production when squeezing gels2022

    • Author(s)
      Murakami Kazuhiro、Hori Kazuhiro、Uehara Fumiko、Salazar Simonne E.、Ishihara Sayaka、Nakauma Makoto、Funami Takahiro、Ono Takahiro
    • Journal Title

      Food Hydrocolloids

      Volume: 124 Pages: 107323-107323

    • DOI

      10.1016/j.foodhyd.2021.107323

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] ウェアラブルデバイスによる咀嚼行動モニタリングの現状と展望2021

    • Author(s)
      堀一浩、上原文子、吉村将悟、堀頌子、戸川瞳、長谷川陽子、小野高裕
    • Journal Title

      日本咀嚼学会雑誌

      Volume: 31 Pages: 2-9

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] かむを測り,気づき,変えるための食育プロジェクト:パイロットスタディ2021

    • Author(s)
      堀一浩、上原文子、戸川瞳、吉村将悟、堀頌子、佐藤理加子、中村由紀、谷村基樹、小野高裕
    • Journal Title

      日本咀嚼学会雑誌

      Volume: 31 Pages: 83-90

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Presentation] 習慣的咀嚼行動と食品摂取状況との関係2022

    • Author(s)
      上原文子,堀 一浩,吉村将吾,堀 頌子,戸川 瞳,長谷川陽子,小野高裕
    • Organizer
      日本咀嚼学会第33回学術大会
    • Related Report
      2022 Research-status Report
  • [Presentation] 「かむ」を測り,気づき,変えるための食育プロジェクト:咀嚼行動変化とアンケート調査2021

    • Author(s)
      上原文子,堀 一浩,戸川 瞳,吉村将悟,堀 頌子,佐藤理加子,中村由紀,小野高裕
    • Organizer
      日本咀嚼学会第32回学術大会
    • Related Report
      2021 Research-status Report
  • [Presentation] ウェアラブル咀嚼回数計を用いた咀嚼行動変容2021

    • Author(s)
      堀頌子、堀一浩、吉村将悟、上原文子、長谷川陽子、小野高裕
    • Organizer
      第54回新潟歯学会総会
    • Related Report
      2021 Research-status Report
  • [Presentation] 咀嚼行動計測における計測環境の影響2021

    • Author(s)
      吉村将悟、堀一浩、上原文子、堀頌子、長谷川陽子、小野高裕
    • Organizer
      令和3年度日本補綴歯科学会関越支部学術大会
    • Related Report
      2021 Research-status Report
  • [Presentation] MASTICATION BEHAVIOR CHANGE USING A WEARABLE DEVICE SYSTEM2021

    • Author(s)
      Shoko HORI, Kazuhiro HORI, Shogo YOSHIMURA, Fumiko UEHARA, Yoko HASEGAWA, Takahiro ONO
    • Organizer
      6th International Conference on Food Oral Processing Physics, Physiology and Psychology of Eating
    • Related Report
      2021 Research-status Report

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Published: 2021-04-28   Modified: 2025-01-30  

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