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Kinematics and dynamic complexity of postural transitions in frail elderly subjects

  • Ganea, R.
  • Paraschiv-Ionescu, A.
  • Salarian, A.
  • Buela, C.
  • Martin, E.
  • Rochat, S.
  • Hoskovec, C.
  • Piot-Ziegler, C.
  • Aminian, K.
Publication Date
Jan 01, 2007
Infoscience @ EPFL
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The aim of this study was to propose a methodology allowing a detailed characterization of body sit-to-stand/stand-to-sit postural transition. Parameters characterizing the kinematics of the trunk movement during sit-to-stand (Si-St) postural transition were calculated using one initial sensor system fixed on the trunk and a data logger. Dynamic complexity of these postural transitions was estimated by fractal dimension of acceleration-angular velocity plot. We concluded that this method provides a simple and accurate tool for monitoring frail elderly and to objectively evaluate the efficacy of a rehabilitation program.


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