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Motor function and disability in the dementias.

L M Waite1, G A Broe, D A Grayson

  • 1Centre for Education and Research on Ageing, University of Sydney, Sydney, NSW, Australia. lwaite@medicine.usyd.edu.au

International Journal of Geriatric Psychiatry
|October 25, 2000
PubMed
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Parkinson's disease dementia (PDD) shows the most significant gait abnormalities and disability compared to Alzheimer's disease and vascular dementia. This study highlights motor impairment

Area of Science:

  • Neurology
  • Gerontology
  • Epidemiology

Background:

  • Three main dementias: Alzheimer's disease (AD), vascular dementia (VaD), and Parkinson's disease dementia (PDD).
  • Previous studies lacked community-based comparisons of gait, balance, and disability across these three dementias.

Purpose of the Study:

  • To investigate gait and balance abnormalities in AD, VaD, and PDD.
  • To compare disability ratings among these three dementia types in a community sample.

Main Methods:

  • Analysis of data from the Sydney Older Persons Study (n=537).
  • Assessment of gait and balance abnormalities.
  • Informant-rated disability assessments for 482 participants.

Main Results:

Related Experiment Videos

  • All three dementias exhibited gait and balance impairments (slowing and ataxia).
  • Parkinson's disease dementia (PDD) demonstrated the most severe gait and balance abnormalities.
  • Disability was highest in individuals with PDD, correlating with motor impairment.

Conclusions:

  • Gait abnormalities are present in AD, VaD, and PDD to varying degrees.
  • Motor impairment severity likely explains the differences in disability levels observed across the dementias.
  • PDD is associated with the greatest motor deficits and subsequent disability.