2022 Fiscal Year Final Research Report
Adaptive locomotor adjustments for obstacle avoidance: the factors determining the timing of adjustments
| Project/Area Number |
19K11466
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 59020:Sports sciences-related
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| Research Institution | Tokyo Metropolitan University |
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Principal Investigator |
Higuchi Takahiro 東京都立大学, 人間健康科学研究科, 教授 (30433171)
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| Co-Investigator(Kenkyū-buntansha) |
福原 和伸 東京都立大学, 人間健康科学研究科, 助教 (10589823)
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| Project Period (FY) |
2019-04-01 – 2023-03-31
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| Keywords | 歩行 / 知覚 / 視覚運動制御 / バーチャルリアリティ / 障害物回避 |
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| Outline of Final Research Achievements |
We developed a virtual reality (VR) system for understanding locomotor strategy to avoid collision with obstacles. Due to an unexpected length of time for the development of the system, we decided to change the research planning and conducted two experiments for addressing how to improve the collision rate of the trailing limb. In the first experiment, we measured walking patterns to step over an obstacle of height in a VR environment and confirmed that the walking patterns were comparable with those in a real environment. In the second experiment, we manipulated the location of the foot step of the leading limb just after crossing over the obstacle. The results showed that the collision rate of the trailing limb was significantly lower when landed on the place 10cm from the obstacle. It is likely that asking individuals to step over an obstacle and landing very closely to the obstacle by the leading limb would be helpful to safely avoid collision with the obstacle by the trail limb.
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| Free Research Field |
Experimental Psychology
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| Academic Significance and Societal Importance of the Research Achievements |
障害物との衝突は主として後続脚で起こる。よって後続脚の衝突率を軽減させる方法の検討は社会的にも有益である。本研究の結果から，もともと衝突率の低い先導脚について，衝突すれすれの位置に接地させることで，後続脚の衝突率が軽減する可能性が示唆された。この結果は，リハビリテーションなどでの衝突回避訓練にも応用可能な成果である。本成果は，VR環境下で実験を行うことによって，実験遂行中に衝突が起こっているかどうかをフィードバックすることがない状況下で実施したことにより，正確な結果が得られている。本研究で開発したVRシステムは，障害物回避のための歩行動作修正の方略を理解するために有益といえる。
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