title: Influence of sensory information on static balance in older patients with vestibular disorder.
abstract: BACKGROUND
  With aging, the sensory systems suffer an accumulation of degenerative, infectious and/or traumatic processes that may hinder the body balance maintenance.
  
  
  OBJECTIVE
  To assess the influence of sensory information on static body balance of elderly individuals with vestibular disorders.
  
  
  METHODS
  Cross-sectional study of elderly individuals with vestibular disorders. The Clinical Test of Sensory Interaction and Balance and posturography integrated with virtual reality (Balance Rehabilitation Unit) were used. Posturography parameters analyzed included center of pressure and velocity of body sway.
  
  
  RESULTS
  123 individuals with mean age of 73.11 were assessed. Worst performance was observed in the Clinical Test of Sensory Interaction and Balance condition of visual dome-unstable surface. Differences between conditions were: firm surface-open eyes/firm surface-closed eyes, unstable surface-open eyes/unstable surface-closed eyes (p<0.001), and unstable surface-closed eyes/unstable surface-visual dome. Considering center of pressure and velocity of body sway, significant differences were observed between the following conditions: firm surface-open eyes/firm surface-closed eyes: firm surface-saccadic stimulus/firm surface-vertical optokinetic stimulus; firm surface-optokinetic stimuli/firm surface-visual-vestibular interaction; and firm surface-visual-vestibular interaction/unstable surface. Worse performances were observed in conditions firm surface-closed eyes, firm surface-vertical optokinetic stimulus, F-visual-vestibular interaction, and unstable surface-closed eyes. There was a difference in the center of pressure between firm surface-closed eyes/firm surface-saccadic stimulus, with a worse performance in the condition of firm surface-closed eyes, and of velocity of body sway, between firm surface-saccadic stimulus/firm surface-horizontal optokinetic stimulus (p<0.001).
  
  
  CONCLUSIONS
  Static body balance in elderly individuals with vestibular disorders is worse when the sensory conditions are more challenging, i.e. stable and unstable surfaces, visual stimuli, such as optokinetic and visual-vestibular interaction, and with the eyes closed.
authors.affiliation: Department of Otorhinolaryngology and Head and Neck Surgery, Universidade Federal de São Paulo (UNIFESP), São Paulo, SP, Brazil. Electronic address: camila_mace@yahoo.com.br.
authors.forename: Camila
authors.initials: C
authors.lastname: Macedo
authors.affiliation: Department of Otorhinolaryngology and Head and Neck Surgery, Universidade Federal de São Paulo (UNIFESP), São Paulo, SP, Brazil.
authors.forename: Juliana Maria
authors.initials: JM
authors.lastname: Gazzola
authors.affiliation: Department of Otorhinolaryngology and Head and Neck Surgery, Universidade Federal de São Paulo (UNIFESP), São Paulo, SP, Brazil.
authors.forename: Natalia Aquaroni
authors.initials: NA
authors.lastname: Ricci
authors.affiliation: Balance Rehabilitation and Social Inclusion Post-Graduation Program, Universidade Anhanguera de São Paulo, Brazil.
authors.forename: Flávia
authors.initials: F
authors.lastname: Doná
authors.affiliation: Department of Otorhinolaryngology and Head and Neck Surgery, Universidade Federal de São Paulo (UNIFESP), São Paulo, SP, Brazil.
authors.forename: Fernando Freitas
authors.initials: FF
authors.lastname: Ganança
mesh_terms: D000368:Aged; D002908:Chronic Disease; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D008297:Male; D004856:Postural Balance / Q000502:physiology*; D012678:Sensation Disorders / Q000503:physiopathology*; D015837:Vestibular Diseases / Q000503:physiopathology*
keywords: Aged; Dizziness; Doenças vestibulares; Equilíbrio postural; Idoso; Postural balance; Reabilitação; Rehabilitation; Tontura; Vestibular diseases