Traditional biomechanical analyses of human movement are generally derived from linear
mathematics. While these methods can be useful in many situations, they do not describe …

Clinical disorders often are characterized by a breakdown in dynamical processes that
contribute to the control of upright standing. Disruption to a large number of physiological …

Abstract Background Approximate entropy (ApEn) and sample entropy (SampEn) have been
previously used to quantify the regularity in centre of pressure (COP) time-series in different …

The degree of multiscale complexity in human behavioral regulation, such as that required
for postural control, appears to decrease with advanced aging or disease. To help delineate …

The dynamics of most healthy physiological processes are complex, in that they are
comprised of fluctuations with information-rich structure correlated over multiple …

Background Entropy when applied to biological signals is expected to reflect the state of the
biological system. However the physiological interpretation of the entropy is not always …

Background Previous research on balance mostly focused on the assessment, training, and
improvements of balance through interventions. We investigated tools commonly used to …

Background Balance during quiet stance involves the complex interactions of multiple
postural control systems, which may degrade with frailty. The complexity of center of …

Multiscale entropy (MSE) is a widely used metric for characterizing the nonlinear dynamics
of physiological processes. Significant variability, however, exists in the methodological …

This study examined a potential age-dependency of both posture and stability (balance)
control in children and adolescents in a healthy population. Body posture with open and …