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    • Adiabatic Invariant of Center-of-Mass Motion during Walking as a Dynamical Stability Constraint on Stride Interval Variability and PredictabilityPeer reviewedOpen access 

      09 septembre 2022, BUISSERET, Fabien; Dehouck, Victor; Boulanger, Nicolas; HENRY, Guillaume; Piccinin, Florence; White, Olivier; DIERICK, Frédéric, HE Louvain en Hainaut
      Article scientifique
      Human walking exhibits properties of both stability and variability. On the one hand, the variability of the interval of time between heel strikes is autocorrelated, i.e., not randomly organized. On the other hand, walking is highly stereotyped and arguments from general mechanics suggest that the stability of gait can be assessed according to invariant properties. This study aims at proposing ...

    • Benefits of nonlinear analysis indices of walking stride interval in the evaluation of neurodegenerative diseasesPeer reviewedOpen access 

      12 décembre 2020, DIERICK, Frédéric; Chantraine, Frédéric; Vandevoorde, Charlotte; White, Olivier; BUISSERET, Fabien, HE Louvain en Hainaut
      Article scientifique
      Indices characterising the long-range temporal structure of walking stride interval (SI) variability such as Hurst exponent (H) and fractal dimension (D) may be used in addition to indices measuring the amount of variability like the coefficient of variation (CV). We assess the added value of the former indices in a clinical neurological context. Our aim is to demonstrate that they provide a clinical ...

    • Fractal analyses reveal independent complexity and predictability of gaitPeer reviewedOpen access 

      28 novembre 2017, DIERICK, Frédéric; Nivard, Anne-Laure; White, Olivier; BUISSERET, Fabien, HE Louvain en Hainaut
      Livre/Ouvrage ou monographie
      Locomotion is a natural task that has been assessed for decades and used as a proxy to highlight impairments of various origins. So far, most studies adopted classical linear analy- ses of spatio-temporal gait parameters. Here, we use more advanced, yet not less practical, non-linear techniques to analyse gait time series of healthy subjects. We aimed at finding more sensitive indexes related to ...