Skip to main content

ORIGINAL RESEARCH article

Front. Sports Act. Living
Sec. Biomechanics and Control of Human Movement
Volume 7 - 2025 | doi: 10.3389/fspor.2025.1528075

Tittle：Reducing trailing limb collisions in older adults through targeted leading limb placement after obstacle crossing: Effect of closer foot placement

Provisionally accepted
Tomoki Hakamata Tomoki Hakamata Takahiro Higuchi Takahiro Higuchi *
  • Tokyo Metropolitan University, Hachioji, Japan

The final, formatted version of the article will be published soon.

    Introduction: Older adults experience a higher frequency of collisions with obstacles when stepping over obstacles, particularly with the trailing limb. We recently demonstrated that placing the leading limb closer to an obstacle after crossing effectively increases the toe height of the trailing limb, resulting in reduced collision. This study investigated whether the intervention of placing the leading limb closer to the obstacle is effective in reducing trailing limb collisions in healthy older adults. Methods: Twenty-one older individuals (11 males, 10 females; mean age 75.7 years) participated. Participants were allocated to one of two groups: a closer placement group, instructed to place the leading limb on a square target positioned on their walking path after crossing an obstacle, and a control group, instructed to cross the obstacle naturally. The target in the closer group was set at 0.5 times the leading limb's foot placement distance, as determined in a pre-test for each participant. The experimental design included a pre-test, intervention, and post-test.Results and discussion: The collision rate for the trailing limb in the closer group was significantly lower in the post-test than that in the pre-test. Furthermore, the variability in toe height and walking speed of the trailing limb in the closer group decreased significantly in the post-test compared to the pre-test. These findings suggest that the intervention of placing the leading limb foot closer to the obstacle after crossing may improve obstacle avoidance by the trailing limb in healthy older adults.

    Keywords: older adults, Walking, Obstacle crossing, collision avoidance, Motion analysis

    Received: 14 Nov 2024; Accepted: 14 Jan 2025.

    Copyright: © 2025 Hakamata and Higuchi. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence: Takahiro Higuchi, Tokyo Metropolitan University, Hachioji, Japan

    Disclaimer: All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.