Estimated lower speed boundary at which the walk ratio constancy is broken in healthy adults

Rumi Murakami, Yohei Otaka

研究成果: Article査読

13 被引用数 (Scopus)

抄録

[Purpose] The ratio of step length to cadence (walk ratio) is invariant over a wide range of speeds. However, no studies have investigated details of the change in the walk ratio at slow speeds. It is necessary to explore how walking behavior changes at a low speed to understand the slow walking observed in various conditions such as aging and pathological conditions. In this study, changes in the walk ratio at slow speeds were investigated, and a lower boundary was estimated at which the walk ratio constancy is broken. [Subjects and Methods] Twenty-one healthy adults were instructed to walk along a flat, straight walkway at five different speeds (fast, preferred, slightly slow, slow, and very slow). The walk ratio was calculated from the step length and cadence. [Results] As the walking speed decreased, the walk ratio and variance began to increase abruptly. The initial break in the walk ratio constancy was at approximately 62 m/min. In addition, the boundary of cadence was approximately 98 m/steps/min. [Conclusions] The study successfully determined a lower boundary at which the walk ratio constancy was broken, suggesting that different control strategies are used when walking at less than the gait speed at which constancy is broken in healthy adults. The finding provides valuable information for understanding slow walking observed in individuals with various pathological conditions.

本文言語English
ページ(範囲)722-725
ページ数4
ジャーナルJournal of Physical Therapy Science
29
4
DOI
出版ステータスPublished - 2017
外部発表はい

All Science Journal Classification (ASJC) codes

  • 理学療法、スポーツ療法とリハビリテーション

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