Visuo-postural dependency index (VPDI) in human postural control

Abstract Background Computerized stabilometry has been utilized to investigate the effect of vision on neuromechanisms human postural control. However, this approach lacks operational methods quantify visual dependency during upright stance. This study had three goals: (1) To introduce concept visuo-postural indices ( VPDI ) representing balance sway characteristics in multiple analytical domains (spatial, temporal, frequency, and structural), (2) age gender effects s, (3) degree relationships between both subjective vertical horizontal perception SVV SVH , respectively). Methods 102 participants (16 80 years old) performed bipedal stances a force platform with eyes open closed. Response variables included VPDIs computed for each index. In addition, 29 also assessments. Results Fifteen s showed be robust indicators input modulation, variation across their magnitudes modulation revealed non-homogeneous response changes stimuli. Gender were not found significant factor modulation. Conclusions potential measures capable quantitatively assess aid assessment fall risks impairments.