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Blood pressure model for designing healthy bathing environment

Research Project

Project/Area Number 18H01595
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 23020:Architectural environment and building equipment-related
Research InstitutionKyoto University

Principal Investigator

HOKOI SHUICHI  京都大学, 工学研究科, 名誉教授 (80111938)

Co-Investigator(Kenkyū-buntansha) 伊庭 千恵美  京都大学, 工学研究科, 准教授 (10462342)
小椋 大輔  京都大学, 工学研究科, 教授 (60283868)
Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥14,820,000 (Direct Cost: ¥11,400,000、Indirect Cost: ¥3,420,000)
Fiscal Year 2020: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2019: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2018: ¥7,670,000 (Direct Cost: ¥5,900,000、Indirect Cost: ¥1,770,000)
Keywords入浴環境 / 高齢者 / 非一様環境 / 非定常環境 / 血流分布 / 放熱特性 / 人体温熱モデル / 心臓血管制御系 / 血圧予測モデル / 入浴 / 健康環境 / シャワー / 浴室環境 / 血圧 / 超音波画像 / 心臓血管モデル
Outline of Final Research Achievements

In this study, a bathing experiment was conducted to study the human physiological response during bathing. The core temperature, blood pressure, blood flow, and heart rate were measured.
We proposed a novel integrated thermo-cardiovascular regulation model merged with a human thermoregulation model (HTM) and a cardiovascular regulation model (CRM), to predict the human physiological response in transient and non-uniform bathing environment considering the blood flow volume with the thermal environment, the metabolism rate, and the heart rate changes. Meanwhile, the time-varying heart rate is used to adjust the cardiac output of the CRM’s circulation in real-time. The results show that the proposed model can accurately predict the subject's thermal physiological response, including blood pressure, and blood flow volume during bathing. The consideration of the metabolic rate and heart rate changes improved the prediction accuracy of the thermo-cardiovascular regulation model.

Academic Significance and Societal Importance of the Research Achievements

近年、高齢者を中心に浴室内での事故が多く発生している。その原因として主に、血圧変化により引き起こされる心血管系疾病、入浴時の行為に伴う血流変化による立ち眩みなどが挙げられている。従って、安全な入浴には浴室周りの温熱環境の適切な設計とともに、入浴時の行動に伴う温熱生理応答を理解することが不可欠である。本研究は、安全で健康的な入浴を可能とする入浴環境設計の基礎となる温熱生理モデルを提案しており、その社会的意義は大きい。また、提案した人体温熱生理モデルは、姿勢変化や非一様な周辺環境、深部・皮膚温度などの温熱生理応答と血圧・血流量との相互関係を考慮しており、学術的にも独創性の高いものである。

Report

(4 results)
  • 2022 Final Research Report ( PDF )
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • Research Products

    (15 results)

All 2023 2022 2020 2019 2018

All Journal Article (3 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 3 results,  Open Access: 2 results) Presentation (8 results) Book (4 results)

  • [Journal Article] Study on physiological response considering blood flow volume in transient and non-uniform bathing thermal environment using thermo-cardiovascular regulation model2023

    • Author(s)
      Han Liu, Daisuke Ogura, Shuichi Hokoi, Chiemi Ib
    • Journal Title

      Building and Environment

      Volume: 228 Pages: 109826-109826

    • DOI

      10.1016/j.buildenv.2022.109820

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Analysis of temperature preference of guests from various countries/regions during summer and winter in a budget hotel in Kyoto, Japan2023

    • Author(s)
      Ayaka Takii, Chiemi Iba, Shuichi Hokoi
    • Journal Title

      Building and Environment

      Volume: 232 Pages: 110052-110052

    • DOI

      10.1016/j.buildenv.2023.110052

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] IMPROVEMENT OF INDOOR ENVIRONMENT BASED ON MULTIPLE INTERZONAL AIRFLOW ANALYSIS2020

    • Author(s)
      高田暁、今井悠喜、鉾井修一、小椋大輔、伊庭千恵美
    • Journal Title

      Journal of Environmental Engineering (Transactions of AIJ)

      Volume: 85 Issue: 770 Pages: 249-258

    • DOI

      10.3130/aije.85.249

    • NAID

      130007838037

    • ISSN
      1348-0685, 1881-817X
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Presentation] 冬期のビジネスホテルにおける室内温湿度環境に関する検討2022

    • Author(s)
      瀧井 彩加、伊庭 千恵美、鉾井 修一
    • Organizer
      建築学会大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 食品スーパーにおける滞在者の生理量・心理量の変化と生理量予測モデル2019

    • Author(s)
      浅野智司・伊庭千恵美・鉾井修一・土居信一
    • Organizer
      平成令和元年度日本建築学会近畿支部研究発表会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 食品スーパーにおける空調の最適制御を目標とした滞在者の温冷感予測に関する研究(その1)食品スーパーにおける滞在者の生理量・心理量の変化2019

    • Author(s)
      土居信一・浅野智司・伊庭千恵美・鉾井修一
    • Organizer
      令和元年度日本建築学会大会学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 食品スーパーにおける滞在者の生理量・心理量の変化と生理量予測モデル(その2)食品スーパーにおける滞在者の生理量予測モデル2019

    • Author(s)
      浅野智司・伊庭千恵美・鉾井修一・土居信一
    • Organizer
      令和元年度日本建築学会大会学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 食品スーパーにおける滞在者の生理量・心理量の変化と生理量予測モデル2019

    • Author(s)
      土居信一・伊庭千恵美・浅野智司・鉾井修一
    • Organizer
      空気調和衛生工学会学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] スーパーマーケットにおける温熱環境・設備使用に関する実態調査2018

    • Author(s)
      浅野智司・伊庭千恵美・鉾井修一・土居信一
    • Organizer
      平成30年度日本建築学会近畿支部研究発表会
    • Related Report
      2018 Annual Research Report
  • [Presentation] スーパーマーケットにおける温熱環境・設備使用に関する実態調査2018

    • Author(s)
      浅野智司・伊庭千恵美・鉾井修一・土居信一
    • Organizer
      平成30年度日本建築学会大会学術講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] スーパーマーケットにおける温熱環境・設備使用に関する実態調査2018

    • Author(s)
      土居信一・伊庭千恵美・浅野智司・鉾井修一
    • Organizer
      空気調和衛生工学会学術講演会
    • Related Report
      2018 Annual Research Report
  • [Book] Indoor Environment and Air-conditioning of Residential Buildings in a Hot, Dry Climate (Oman): Present and Future, in Oman in the 21st Century: Issues and Challenges, Ch. 42019

    • Author(s)
      Noor Hanita Abdul Majid, Nozomi Takagi, Shuichi Hokoi, Tomoko Uno, Sri Nastiti N Ekasiwi
    • Total Pages
      164
    • Publisher
      Nova, Science Publishers, Inc., New York.
    • ISBN
      9781536157543
    • Related Report
      2019 Annual Research Report
  • [Book] Sustainable Houses and Living in the Hot-Humid Climates of Asia, Chapter 232018

    • Author(s)
      Tomoko Uno, Shuichi Hokoi, Sri Nastiti N Ekasiwi
    • Total Pages
      559
    • Publisher
      Springer
    • ISBN
      9789811084645
    • Related Report
      2018 Annual Research Report
  • [Book] Sustainable Houses and Living in the Hot-Humid Climates of Asia, Chapter 132018

    • Author(s)
      Tomoko Uno, Daisuke Oka, Shuichi Hokoi, Sri Nastiti N Ekasiwi, and Noor Hanita Abdul Majid
    • Total Pages
      559
    • Publisher
      Springer
    • ISBN
      9789811084645
    • Related Report
      2018 Annual Research Report
  • [Book] Sustainable Houses and Living in the Hot-Humid Climates of Asia, Chapter 392018

    • Author(s)
      Tomoko Uno, Shuichi Hokoi and Sri Nastiti N. Ekasiwi
    • Total Pages
      559
    • Publisher
      Springer
    • ISBN
      9789811084645
    • Related Report
      2018 Annual Research Report

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Published: 2018-04-23   Modified: 2024-01-30  

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