Audio-biofeedback improves balance in patients with bilateral vestibular loss

Marco Dozza, Lorenzo Chiari, Fay B. Horak

Research output: Contribution to journalArticlepeer-review

142 Scopus citations


Objective: To evaluate the effectiveness of an audio-biofeedback (ABF) system for improving balance in patients with bilateral vestibular loss (BVL). Design: Before-after trial. Setting: University balance disorders laboratory. Participants: Nine subjects with BVL and 9 unaffected subjects as controls. Intervention: Trunk acceleration ABF while standing on foam with eyes closed. Main Outcome Measure: Balance stability was evaluated according to the following parameters: the root mean square of (1) the center of pressure (COP) displacements and of (2) the trunk accelerations; the COP bandwidth; the time spent by the participant within ±1° threshold from their baseline COP position; and the mean accelerations of the trunk while the participant was swaying outside this ±1° threshold. Results: Participants with BVL had significantly larger postural sway than did unaffected participants. Those with BVL, while using ABF, decreased sway area by 23%±4.9%, decreased trunk accelerations by 46%±9.9%, and increased time spent within ±1° sway threshold by 195%±34.6%. Conclusions: ABF improved stance stability of participants with BVL by increasing the amount of postural corrections.

Original languageEnglish (US)
Pages (from-to)1401-1403
Number of pages3
JournalArchives of Physical Medicine and Rehabilitation
Issue number7
StatePublished - Jul 2005


  • Balance
  • Biofeedback
  • Rehabilitation
  • Vestibular diseases

ASJC Scopus subject areas

  • Physical Therapy, Sports Therapy and Rehabilitation
  • Rehabilitation


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