Posturographic analysis of older adults without dementia and patients with Alzheimer’s disease: A cross-sectional study

Análise posturográfica de adultos idosos sem demência e com doença de Alzheimer: estudo de corte transversal

Paula Sant’Anna Felipe de Oliveira Silva Ana Carolina de Mello Alves Rodrigues Jéssica Plácido José Vinicius Ferreira Estele Caroline Welter Meereis Jomilto Praxedes Valeska Marinho Jerson Laks Renato Sobral Monteiro-Junior Andrea Camaz Deslandes About the authors


Additional clinical tools should be investigated to facilitate and aid the early diagnosis of cognitive decline. Postural control worsens with aging and this may be related to pathological cognitive impairment.


to compare the balance of older adults without dementia in a control group (CG) and with Alzheimer’s disease (AD), to observe the possible association with the independent variables (diagnosis, age, gender, and global cognition) and to verify the best posturographic analyses to determine the difference between the groups.


86 older adults (AD = 48; CG = 38) were evaluated using the Berg Balance Scale (BBS) and postural control was assessed by stabilometry on the Wii Balance Board ® (WBB). Independent T, Mann-Whitney U-tests, Effect Size (ES) and a linear regression were performed.


there was a significant difference for Elliptical Area, Total Velocity, Medio-Lateral displacements with closed eyes and open eyes, antero-posterior, with closed eyes and BBS between groups. These variables showed a large effect size for BBS (-1.02), Elliptical Area (0.83) with closed eyes, Medio-Lateral (0.80, 0.96) and Total Velocity (0.92; 1.10) with eyes open and eyes closed, respectively. Regression indicated global cognition accompanied by age, gender, and diagnosis influenced postural control.


patients with AD showed impaired postural control compared to Control Group subjects. Total Velocity with closed eyes was the most sensitive parameter for differentiating groups and should be better investigated as a possible motor biomarker of dementia in posturographic analysis with WBB.

Key words:
motor biomarker; Alzheimer’s disease; postural control; balance; dementia; older adults

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