Sensitivity of Local Dynamic Stability of Over-Ground Walking to Balance Impairment Due to Galvanic Vestibular Stimulation.

L.H. Sloot, K.S. van Schooten, S.M. Bruijn, H Kingma, M.A.G.M. Pijnappels, J.H. van Dieen

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    Abstract

    Impaired balance control during gait can be detected by local dynamic stability measures. For clinical applications, the use of a treadmill may be limiting. Therefore, the aim of this study was to test sensitivity of these stability measures collected during short episodes of over-ground walking by comparing normal to impaired balance control. Galvanic vestibular stimulation (GVS) was used to impair balance control in 12 healthy adults, while walking up and down a 10 m hallway. Trunk kinematics, collected by an inertial sensor, were divided into episodes of one stroll along the hallway. Local dynamic stability was quantified using short-term Lyapunov exponents (λ
    Original languageEnglish
    Pages (from-to)1563-1569
    JournalAnnals of Biomedical Engineering
    Volume39
    Issue number5
    DOIs
    Publication statusPublished - 2011

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