Individual changes of dynamic stability induced by orthopaedic shoes. Individual results of local dynamic stability (Maximal finite time Lyapunov exponents (λ*), i.e. rate of divergence) are presented. Discontinuous lines join the individual results of control trials with Standard Shoes (SS) and Orthopaedic Shoes (OS) trials (N = 25). Boxplots show the quartiles and the median. Columns represent the 3 axes of trunk acceleration, as measured by the triaxial accelerometer.