EFFECT OF 6-DAYS OF SUPPORT WITHDRAWALON CHARACTERISTICS OF BALANCE FUNCTION

摘要

The role of different sensorimotor and sensory factors onrnpostural disorders at different stages of the exposure tornmicrogravity still remains unknown. The results obtainedrnafter the Dry Immersion (DI) exposure, showed that after 6rndays of DI the subjects' ability to resist to posturernperturbations was highly reduced, the EMG response ofrncorrective muscles was increased, and the structure ofrncorrective responses was modified, so that the equilibriumrnwas maintained by the elimination of excessive degrees ofrnfreedom. Thus, the results of the study have revealedrnprofound changes in postural synergies suggesting arnsignificant contribution of the support afferentation tornposture control.