Postural Preparation to Stepping: Coupled Center of Pressure Shifts in the Anterior-Posterior and Medio-Lateral Directions
| Autor: | Manh-Cuong Do, Jacques LaRue, Mark L. Latash, Clint Hansen |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
030506 rehabilitation
stepping Healthy subjects Biomechanics Physical Therapy Sports Therapy and Rehabilitation Single step Mechanics Body weight humanities biomechanics Highly sensitive 03 medical and health sciences 0302 clinical medicine Center of pressure (terrestrial locomotion) Physiology (medical) Section I – Kinesiology center of pressure Anterior posterior sense organs lcsh:Sports medicine referent configuration 0305 other medical science lcsh:RC1200-1245 030217 neurology & neurosurgery posture |
| Zdroj: | Journal of Human Kinetics Journal of Human Kinetics, Vol 54, Iss 1, Pp 5-14 (2016) |
| ISSN: | 1899-7562 1640-5544 |
| Popis: | We explored changes in the postural preparation to stepping introduced by modifications of the initial coordinates of the center of pressure (COP). We hypothesized that the postural adjustments in the anterior-posterior direction would persist across all initial COP manipulations while the adjustments in the medio-lateral direction would be highly sensitive to the initial COP coordinate. Healthy subjects stood on a force plate, shifted the body weight to one of the initial conditions that spanned the range of COP coordinates in both directions, and initiated a single step or started to walk. No major changes were observed between the stepping and walking conditions. Changes in the initial COP coordinate in the medio-lateral direction led to scaling of the magnitude of the COP shift in that direction prior to stepping accompanied by a nearly proportional change in the COP shift in the anterior-posterior direction. Changes in the initial COP coordinate in the anterior-posterior direction led to scaling of the magnitude of the COP shift in that direction prior to stepping without consistent changes in the COP shift in the medio-lateral direction. We interpret the results as reflecting a neural organization using a small set of referent body configurations for the postural adjustments. |
| Databáze: | OpenAIRE |
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