Validity of gait asymmetry estimation by using an accelerometer in individuals with hemiparetic stroke

Kazuaki Oyake, Tomofumi Yamaguchi, Masafumi Sugasawa, Chihiro Oda, Shigeo Tanabe, Kunitsugu Kondo, Yohei Otaka, Kimito Momose

研究成果: Article査読

10 被引用数 (Scopus)

抄録

[Purpose] The purpose of this study was to evaluate the validity of estimating step time and length asymmetries, using an accelerometer against force plate measurements in individuals with hemiparetic stroke. [Subjects and Methods] Twenty-four individuals who previously had experienced a stroke were asked to walk without using a cane or manual assistance on a 16-m walkway. Step time and length were measured using force plates, which is the gold standard for assessing gait asymmetry. In addition to ground reaction forces, trunk acceleration was simultaneously measured using an accelerometer. To estimate step time asymmetry using accelerometer data, the time intervals between forward acceleration peaks for each leg were calculated. To estimate step length asymmetry using accelerometer data, the integration of the positive vertical accelerations following initial contact of each leg was calculated. Asymmetry was considered the affected side value divided by the unaffected side value. [Results] Significant correlations were found between the accelerometer and the force plates for step time and length asymmetries (rho=0.83 and rho=0.64, respectively). [Conclusion] An accelerometer might be useful for assessing step time and length asymmetries in individuals with hemiparetic stroke, although improvements are needed for estimating the accuracy of step length asymmetry.

本文言語English
ページ(範囲)307-311
ページ数5
ジャーナルJournal of Physical Therapy Science
29
2
DOI
出版ステータスPublished - 2017 2

ASJC Scopus subject areas

  • 理学療法、スポーツ療法とリハビリテーション

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