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Using step counts as a measure to predict mobility limitations in older people

Research Project

Project/Area Number 16K01825
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Applied health science
Research InstitutionNational Institute of Fitness and Sports in Kanoya

Principal Investigator

YOSHITAKE Yutaka  鹿屋体育大学, スポーツ人文・応用社会科学系, 教授 (00136334)

Co-Investigator(Kenkyū-buntansha) 宮崎 秀夫  新潟大学, 医歯学系, 教授 (00157629)
吉田 剛一郎  鹿屋体育大学, スポーツ生命科学系, 准教授 (10274870)
山本 直史  愛媛大学, 社会共創学部, 准教授 (40552386)
東恩納 玲代  名桜大学, 健康科学部, 准教授 (60710225)
永山 寛  九州大谷短期大学, その他部局等, 講師 (10580227)
葭原 明弘  新潟大学, 医歯学系, 教授 (50201033)
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords高齢者 / 運動・移動能力 / 歩数 / 身体活動 / フレイル / 運動・移動障害 / 体力 / 死亡 / 死亡率 / 身体的自立 / 加速度計
Outline of Final Research Achievements

We examined step rate levels as a predictor for preventing mobility deterioration to maintain active life expectancy in older people. We recruited 600 (300 males and 300 females) physically independent, community-dwelling 70-year-old people at baseline. In a 10-year longitudinal study, the all-cause mortality and the onset of frailty considerably decreased at a level of approximately 8000 and 7300 steps per day, respectively. The current study suggests that a high daily step count is associated with a lower risk of all-cause mortality and a reduced risk for frailty in older people. In conclusion, the daily step counts (approximately 8000 steps per day) may be used as a measure of physical activity for predicting the mobility limitations in older people.

Academic Significance and Societal Importance of the Research Achievements

本研究のオリジナルな点は、70歳以上の高齢者の歩数は総死亡率とフレイル発症と関連し、いずれも1日の総歩数が8000歩/日を超えるとこれらの関連性が明確になることを明らかにしたことである。これまで、わが国では高齢者の健康寿命の延伸のための身体活動量についての長期縦断的研究は実施されていなかった。しかも、厚生労働省から提示されている65歳以上の健康づくりのための身体活動量のエビデンスは諸外国の研究結果を基にしたものである。わが国の高齢者を対象の健康寿命の延伸につながる身体活動量の維持目標(目安)値を分かりやすい歩数で示したことは、今後の高齢者の健康づくりの普及・啓発に役立つものと思われる。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (4 results)

All 2019 2018 2017 2016

All Journal Article (2 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (2 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Journal Article] Daily step count and all-cause mortality in a sample of Japanese elderly people:a cohort study.2018

    • Author(s)
      Yamamoto N, Miyazaki H, Shimada M, Nakagawa N, Sawada SS, Nishimuta M, Kimura Y, Kawakami R, Nagayama H, Asai H, Lee IM, Blair SN, Yoshitake Y.
    • Journal Title

      BMC Public Health

      Volume: 18 Issue: 1 Pages: 540-551

    • DOI

      10.1186/s12889-018-5434-5

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Dentition status and frailty in community-dwelling older adults: A 5-year prospective cohort study.2017

    • Author(s)
      Iwasaki M, Yoshihara A, Sato M, Minagawa K, Mieko S, Nishimuta M, Ansai T, Yoshitake Y. Miyazaki H.
    • Journal Title

      Geriatr Gerontol Int

      Volume: 18 Issue: 2 Pages: 256-262

    • DOI

      10.1111/ggi.13170

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] フレイル高齢者の身体活動量2019

    • Author(s)
      吉武 裕
    • Organizer
      第40回日本臨床栄養学会総会 第39回日本臨床栄養協議会総会 第16回大連合大会
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] Daily step count and all-cause mortality in Japanese elderly people: A cohort study.2016

    • Author(s)
      Naofumi Yamamoto, Hiroshi Nagayama, Mieko Shimada, Naoki Nakagawa, Susumu S, Sawada, Mamoru Nishimuta, Yasuo Kimura, Hidenori Asai, Hideo Miyazaki, I-M Lee, Steve N Blair, Yutaka Yoshitake.
    • Organizer
      ACSM 63th Annual Meeting,
    • Place of Presentation
      Boston, MA,(USA)
    • Year and Date
      2016-06-02
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research

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Published: 2016-04-21   Modified: 2020-03-30  

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