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2023 Fiscal Year Final Research Report

A longitudinal study to examine the effect of hardness of the habitual diets on growth and development in schoolchildren

Research Project

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Project/Area Number 20K11477
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 59030:Physical education, and physical and health education-related
Research InstitutionKonan Women's University

Principal Investigator

Kohri Toshiyuki  甲南女子大学, 医療栄養学部, 教授 (80440999)

Co-Investigator(Kenkyū-buntansha) 岡本 希  兵庫教育大学, 学校教育研究科, 教授 (70364057)
川西 正子  近畿大学, 農学部, 准教授 (20221038)
明神 千穂  近畿大学, 農学部, 講師 (90529752)
Project Period (FY) 2020-04-01 – 2024-03-31
Keywords食物の硬さ / 子供 / 食べる速さ / 肥満 / BMI / 咀嚼
Outline of Final Research Achievements

Due to the increase in processed foods, the foods that humans consume have become much softer than in the past. Although the relationship between “hardness of the habitual diets” and growth and development has been reported in animals, little was known about the effects of “hardness of the habitual diets” on humans.
We followed growing children for three years to investigate the relationship between habitual “hardness of the habitual diets” and physical conditions such as body mass index.
The results showed that, especially among girls, the softer the “hardness of food,” the higher the body fat percentage, body mass index, and abdominal circumference diameter. On the other hand, in boys, the faster they ate, the higher their body fat percentage and body mass index tended to be.

Free Research Field

栄養学

Academic Significance and Societal Importance of the Research Achievements

加工食品の増加により、ヒトが摂取する食物は昔より格段に柔らかくなっているが、「食物の硬さ」の急激な変化が、ヒトに及ぼす影響は、ほとんど知られていなかった。
本研究結果から、特に女児においては、ある程度の噛み応えのある食事を、意識して摂取することが肥満抑制や生活習慣病予防に繋がる可能性が示唆された。
また、男児、女児ともに、食事を食べる速さが速いほど、太りやすくなる可能性が示唆された。本研究結果は、成長期の子供から、柔らかい食品だけでなく、噛み応えのある食品も加えて、よく咀嚼して摂取するべきという食育の根拠が得られた。ただし、男児と女児で性差があるため、今後さらに検討を要する。

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Published: 2025-01-30  

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