Compensation to whole body active rotation perturbation

S. Rossi, S. Gazzellini, M. Petrarca, F. Patanè, I. Salfa, E. Castelli, P. Cappa

Research output: Contribution to journalArticle

Abstract

The aim of the present study is the exploration of the compensation mechanisms in healthy adults elicited by superimposing a horizontal perturbation, through a rotation of the support base, during a whole body active rotation around the participant's own vertical body axis. Eight healthy participants stood on a rotating platform while executing 90° whole body rotations under three conditions: no concurrent platform rotation (NP), support surface rotation of ±45° in the same (45-S) and opposite (45-O) directions. Participants' kinematics and CoP displacements were analyzed with an optoelectronic system and a force platform.In both 45-S and 45-O conditions, there was a tendency for the head to be affected by the external perturbation and to be the last and least perturbed segment while the pelvis was the most perturbed. The observed reduced head perturbation in 45-S and 45-O trials is consistent with a goal-oriented strategy mediated by vision and vestibular information, whereas the tuning of lumbar rotation is consistent with control mechanisms mediated by somato-sensory information.

Original languageEnglish
Pages (from-to)621-624
Number of pages4
JournalGait and Posture
Volume39
Issue number1
DOIs
Publication statusPublished - Jan 2014

Keywords

  • Balance
  • Postural perturbation
  • Rotating platform

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine
  • Rehabilitation
  • Biophysics

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