2023 Fiscal Year Final Research Report

Developing a method of measuring a fresh sweat and its composition for supporting the prevention of heat shock and skin health

Research Project

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Project/Area Number	21K19712
Research Category	Grant-in-Aid for Challenging Research (Exploratory)
Allocation Type	Multi-year Fund
Review Section	Medium-sized Section 59:Sports sciences, physical education, health sciences, and related fields
Research Institution	Kobe University
Principal Investigator	Kondo Narihiko 神戸大学, 人間発達環境学研究科, 教授 (70215458)
Co-Investigator(Kenkyū-buntansha)	笠間敏博東京大学, 大学院工学系研究科(工学部), 特任准教授 (00564717) 井上芳光大阪国際大学, 人間科学部, 名誉教授 (70144566) 藤井直人筑波大学, 体育系, 助教 (00796451) 天野達郎新潟大学, 人文社会科学系, 准教授 (60734522)
Project Period (FY)	2021-07-09 – 2024-03-31
Keywords	sweat / sweat composition / wearable sensor
Outline of Final Research Achievements	Sweat in humans is related to Quality of Life. However, there is an issue with measuring sweat in which we could not measure both fresh sweat and its composition from the same site of skin and at the same time. We developed two new devices. Firstly, we made a silicon plate with a ditch that simultaneously attached the skin for measuring fresh sweat and its composition. It was possible to measure sweat and sweat composition at the same time, however, the sweat rate measured by this method was high relative to it measured by the previous methods, indicating that we need a method for attaching it to the skin without leaking sweat. We also made another new device using a sodium sensor and put it into the special capsule. It is possible to measure sweat and its composition continuously by using this method even though the capsule had a problem collecting sweat.
Free Research Field	応用生理学
Academic Significance and Societal Importance of the Research Achievements	今回開発した汗量と成分を同時に測定する2つの方法はこれまで学術的に解決されていなかったフレッシュな汗分析を可能にした点は学術的意義が高い．また，小型のNa+センサーを利用した分析は，今後，wearable sensorへの発展が期待でき，小型化することで日常的な汗の量と成分の絶対値が測定できる可能性が出てきた点は応用生理学・環境生理学・健康科学の分野の研究発展に寄与するものと思われる．人の汗は高温下での安静時や運動時の体温維持（熱中症予防），皮膚の健康に関与し，日常的な汗の量と成分の絶対値を正確に測定することで，個々に合ったこれらへの支援が可能になる．