Abstract
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 language | English (US) |
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Pages (from-to) | 737-764 |
Number of pages | 28 |
Journal | Human Movement Science |
Volume | 20 |
Issue number | 6 |
DOIs | |
State | Published - Dec 1 2001 |
All Science Journal Classification (ASJC) codes
- Biophysics
- Orthopedics and Sports Medicine
- Experimental and Cognitive Psychology