歩行中のバランス制御に対する視覚的摂動の影響
Yaqi Li1, Eugenie Lambrecht2, Sjoerd M Bruijn1
1Department of Human Movement Science, Vrije Universiteit Amsterdam, Amsterdam Movement Sciences, Amsterdam, Netherlands.
The Journal of experimental biology
|January 30, 2026
まとめ
視覚的摂動は歩行中のバランス制御を妨げる。特に頭部回転は、歩幅と重心(CoM)制御の変動性を著しく増加させた。
科学分野:
- 生体力学
- ヒトの移動
- 神経科学
背景:
- 視覚情報は、歩行中のバランスを維持するために不可欠である。
- 視覚的摂動は、姿勢制御に影響を与える錯覚的な自己運動を引き起こす可能性がある。
- これらの影響を理解することは、転倒防止と効果的な介入策の設計に不可欠である。
研究 の 目的:
- 異なる視覚的摂動が歩行パラメータに及ぼす影響を調査すること。
- 視覚刺激が足配置と重心(CoM)制御にどのように影響するかを評価すること。
- トレッドミル歩行中の頭部回転がバランスに及ぼす影響を分析すること。
主な方法:
- 16人の健康な若年成人を対象に、3つの視覚的摂動条件下でトレッドミル歩行を実施した。
- 足配置や重心を含む運動学的データを分析した。
- 重心状態から足配置を予測する線形モデルを使用し、そのずれを定量化した。
主要な成果:
- 視覚的摂動は、歩幅の変動性、重心位置の変動性、および足配置のエラーを増加させた。
- 特定の視覚的摂動エポック中に、足と重心の軌道のずれが観察された。
- 頭部回転(MT-HR)は、特に前額面における胴体の方向とバランス制御に影響を与えた。
結論:
- 視覚的摂動は、歩行の安定性と重心制御に大きく影響する。
- 頭部回転は、胴体の方向との連動を通じて、さらなるバランスの課題をもたらす。
- これらの発見は、視覚入力、頭部運動、および姿勢安定性との間の複雑な相互作用を強調している。
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