Predicting dynamic postural instability using center of mass time-to-contact information.

  title={Predicting dynamic postural instability using center of mass time-to-contact information.},
  author={Christopher J. Hasson and Richard E. A. van Emmerik and Graham E. Caldwell},
  journal={Journal of biomechanics},
  volume={41 10},
Our purpose was to determine whether spatiotemporal measures of center of mass motion relative to the base of support boundary could predict stepping strategies after upper-body postural perturbations in humans. We expected that inclusion of center of mass acceleration in such time-to-contact (TtC) calculations would give better predictions and more advanced warning of perturbation severity. TtC measures were compared with traditional postural variables, which do not consider support boundaries… CONTINUE READING

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Information in movement variability about the qualitative dynamics of posture and orientation

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