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Hajime Ohtsu
大津　創
Hajime Ohtsu
大津　創
Graduate School of Engineering Science　Department of Mechanical Science and Bioengineering, Assistant Professor
ohtsu.hajime.es osaka-u.ac.jp

keyword Walking model，Fall prevention，Elderly，Gait

Research History 9

  1. 2025/04 - Present
    The University of Osaka　Graduate School of Engineering Science Department of Mechanical Science and Bioengineering Division of Bioengineering　Assistant Professor

  2. 2023/04 - Present
    Tokyo Metropolitan University　Department of Mechanical Engineering Graduate School of Systems Design　Visiting Researcher

  3. 2023/10 - 2025/03
    The University of Osaka　Graduate School of Engineering Science Department of Mechanical Science and Bioengineering Division of Bioengineering　Researcher

  4. 2023/04 - 2023/09
    Japan Society for the Promotion of Science　Postdoctoral Fellow PD (The University of Osaka)

  5. 2021/04 - 2023/03
    Japan Society for the Promotion of Science　Postdoctoral Fellow DC2 (Tokyo Metropolitan University)

  6. 2020/07 - 2023/03
    SunCity Kichijouji　Physical therapist (part-time)

  7. 2020/05 - 2021/03
    SunCity Chofu Royal care　Physical therapist (part-time)

  8. 2019/11 - 2020/03
    Yamagata City Hospital Saiseikan　Physical therapist (part-time)

  9. 2016/04 - 2019/06
    Matsuda Hospital　Physical therapist

Education 3

  1. Tokyo Metropolitan University　Graduate School of Systems Design　Department of Mechanical Engineering

    2020/04 - 2023/03

  2. Yamagata Prefectural University of Health Science　Graduate School of Health Sciences　Department of Physical Therapy

    2018/04 - 2020/03

  3. Yamagata Prefectural University of Health Science　Faculty of Health Science　Department of Physical Therapy

    - 2016/03

Professional Memberships 3

  1. 大阪府理学療法士会

  2. 日本基礎理学療法学会

  3. Japanese Physical Therapy Association

Research Areas 1

  1. Life sciences / Rehabilitation science / Biomechanics

Papers 9

  1. Verification of Footwear Effects on a Foot Deformation Approach for Estimating Ground Reaction Forces and Moments

    Naoto Haraguchi, Hajime Ohtsu, Bian Yoshimura, Kazunori Hase

    Sensors　Vol. 25　No. 12　p. 3705-3705　2025/06/13　Research paper (scientific journal)

  2. A powered simple walking model explains the decline in propulsive force and hip flexion torque compensation in human gait

    Hajime Ohtsu, Kazunori Hase, Kouta Sakoda, Shinya Aoi, Shunsuke Kita, Shinya Ogaya

    Scientific Reports　Vol. 13　No. 1　2023/09/07　Research paper (scientific journal)

    Publisher: Springer Science and Business Media LLC

  3. Investigation of the relationship between steps required to stop and propulsive force using simple walking models

    Hajime Ohtsu, Naoto Haraguchi, Kazunori Hase

    Journal of Biomechanics　p. 111071-111071　2022/05　Research paper (scientific journal)

    Publisher: Elsevier BV

  4. Adaptive Vibrarthographic Signal Denoising via Ant Colony Optimization Using Dynamic Denoising Filter Parameters

    Rui Gong, Kazunori Hase, Hajime Ohtsu, Susumu Ota

    International Journal of Engineering and Technology Innovation　Vol. 12　No. 1　p. 01-15　2022　Research paper (scientific journal)

    Publisher: Taiwan Association of Engineering and Technology Innovation

  5. Effects of Restriction of Forefoot Rocker Functions by Immobilisation of Metatarsophalangeal Joints on Kinematics and Kinetics during Walking

    Toshiaki Takahashi, Tokiko Nagase, Seiya Akatsuka, Tatsuya Nakanowatari, Hajime Ohtsu, Shinya Yoshida, Hitoshi Makabe, Kouji Ihashi, Hideto Kanzaki

    The Foot　Vol. 49　p. 101743-101743　2021/12　Research paper (scientific journal)

    Publisher: Elsevier BV

  6. Vibroarthrographic signals for the low-cost and computationally efficient classification of aging and healthy knees

    Rui Gong, Hajime Ohtsu, Kazunori Hase, Susumu Ota

    Biomedical Signal Processing and Control　Vol. 70　2021/09　Research paper (scientific journal)

    Publisher: Elsevier BV

  7. How does wearing slippers affect the movement strategy while crossing over an obstacle?

    Hajime Ohtsu, Ryusuke Togashi, Mina Hiramuki, Shinya Yoshida, Tadayoshi Minamisawa, Hideto Kanzaki

    Gait & Posture　Vol. 86　p. 17-21　2021/05　Research paper (scientific journal)

    Publisher: Elsevier BV

  8. Does the balance strategy during walking in elderly persons show an association with fall risk assessment?

    Hajime Ohtsu, Shinya Yoshida, Tadayoshi Minamisawa, Natsuki Katagiri, Tomofumi Yamaguchi, Toshiaki Takahashi, Shin-Ichi Yomogida, Hideto Kanzaki

    Journal of Biomechanics　Vol. 103　2020/04/16　Research paper (scientific journal)

  9. Investigation of balance strategy over gait cycle based on margin of stability

    Hajime Ohtsu, Shinya Yoshida, Tadayoshi Minamisawa, Toshiaki Takahashi, Shin-Ichi Yomogida, Hideto Kanzaki

    Journal of Biomechanics　Vol. 95　p. 109319-109319　2019/10/11　Research paper (scientific journal)

Misc. 1

  1. 転倒・骨折予防のための歩行評価とアプローチ

    神先 秀人, 池添 冬芽, 大津 創

    理学療法ジャーナル（特集 歩行PART 2 運動器疾患と歩行指導）　Vol. 54　No. 12　p. 1427-1435　2020/12

    Publisher: 医学書院

Presentations 6

  1. [U39-1-3] シンプルモデルを用いた加齢が歩行の不安定性を引き起こす原因の解明

    大津 創

    第29回日本基礎理学療法学会学術大会　2024/10/12

  2. [O-25 Locomotion: General2] Simple walking model to explain hip torque compensation for reduced propulsive force

    XXIX Congress of International Society of Biomechanics (ISB2023)　2023/08/01

  3. [1P1-F: GS-01] Development of a gait balance evaluation system using an inertial sensor for fall risk assessment

    Kouta Sakoda, Hajime Ohtsu, Kazunori Hase, Shunsuke Kita, Shinya Ogaya

    2022/08

  4. [O-16045] Proposal of a stability index including the effect of a finite-time double support period

    Hajime Ohtsu, Kazunori Hase, Kouta Sakoda, Shunsuke Kita, Shinya Ogaya

    9th World Congress of Biomechanics　2022/07/12

  5. [P-38] A Novel Interpolation Method for One Dimensional Bio-signals

    ゴン ルイ, 大津 創, 嶋崎 真琴, 長谷 和徳

    SATテクノロジー・ショーケース2022　2022/01/27

  6. [PP1-51] Does the simplest walking model explain the relationship between propulsive force and balance?

    Hajime Ohtsu, Kazunori Hase, Shinya Ogaya, Shunsuke Kita

    The 11th Asian-Pacific Conference on Biomechanics　2021/12/03

Media Coverage 1

  1. Title in Japanese

    Tokyo Metropolitan University

    2022/04/20

Other 3

  1. 登録理学療法士

    2023/07 -

  2. 座長

  3. Reviewer