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Association Between Sleep Quality and Cognitive Symptoms in Patients with Major Depressive Disorder
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[Depression, motor function and cognitive function in epidemiological study].

Kenji Wada1, Kenji Nakashima

  • 1Division of Neurology, Department of Brain and Neurosciences, Faculty of Medicine, Tottori University.

Rinsho Shinkeigaku = Clinical Neurology
|December 1, 2012
PubMed
Summary
This summary is machine-generated.

Mild parkinsonian signs (MPS) are common in older adults and linked to dementia. Reduced physical activity and depression are associated with MPS, suggesting a need for interventions to prevent dementia.

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Area of Science:

  • Gerontology
  • Neurology
  • Public Health

Background:

  • Dementia is a growing medical and social concern in Japan due to an aging population.
  • Previous research identified modifiable risk factors for dementia, such as cardiovascular issues, depression, and low activity levels.
  • An association between mild parkinsonian signs (MPS) and incident dementia has been observed.

Purpose of the Study:

  • To investigate the prevalence of dementia and MPS in an elderly population in Ama-cho, Japan.
  • To explore the relationship between MPS, physical activity, and depression in this cohort.
  • To identify potential interconnections between motor dysfunction, cognitive decline, and depression in dementia development.

Main Methods:

  • A cross-sectional study was conducted in Ama-cho, a rural island town.
  • Prevalence of dementia and MPS was assessed in elderly residents aged 65+ and 60+ respectively.
  • Actigraphy was used to measure actigraphic activity counts, and depression was evaluated.

Main Results:

  • The crude prevalence of dementia was 16.4% in individuals aged 65 and older.
  • The crude prevalence of MPS was 22.1% in individuals aged 60 and older.
  • Reduced actigraphic activity counts were observed in subjects with severe MPS, and a significant association between MPS and depression was found.

Conclusions:

  • Mild parkinsonian signs are prevalent in the elderly population and associated with reduced physical activity and depression.
  • These factors may interact in the development of dementia, alongside organic brain changes and other modifiable risk factors.
  • Multimodal risk factor reduction strategies warrant investigation through randomized controlled trials to prevent dementia.