Postural coordination patterns as a function of dynamics of the support surface

Young Gyu Ko, John Henry Challis, Karl M. Newell

Research output: Contribution to journalArticle

39 Scopus citations


The present study investigated the compensatory postural coordination patterns that emerge in the face of dynamic changes in the surface of support. Adult subjects stood on a moving platform that was sinusoidally translated in the anterior-posterior direction. The frequency and amplitude of the support surface translation were manipulated over a wide range of parameter values. The results revealed that as the frequency of platform motion increased, the postural system systematically exploited the available joint-space degrees of freedom and generated four distinct postural coordination modes (a rigid mode → ankle mode → ankle-hip mode → ankle-hip-knee mode). It appears that upright standing posture has a small set of coordination patterns that are particular to the dynamics of the surface of support.

Original languageEnglish (US)
Pages (from-to)737-764
Number of pages28
JournalHuman Movement Science
Issue number6
StatePublished - Dec 1 2001


All Science Journal Classification (ASJC) codes

  • Biophysics
  • Orthopedics and Sports Medicine
  • Experimental and Cognitive Psychology

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