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Related Concept Videos

Primary Healthcare Services01:30

Primary Healthcare Services

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Primary care promotes wellness and prevents disease. This care includes health promotion, education, protection (such as immunizations), early disease screening, and environmental considerations. Settings providing this type of healthcare include physician offices, public health clinics, school nursing, and community health nursing.
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Levels of Health Promotion and Illness Prevention01:26

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Health promotion allows a person to control the determinants of health, resulting in an improved health status. It enhances the quality of life and reduces premature deaths. Health promotion and illness prevention programs help people make beneficial choices to reduce the risk of disease and disabilities. There are three health promotion and illness prevention levels: primary, secondary, and tertiary prevention.
In primary prevention, actions taken before disease onset prevent the disease from...
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Preventive Healthcare Services01:30

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Preventive healthcare services keep people healthy via frequent check-ups, screening, and counseling. They primarily aid in disease prevention rather than treating an acute or chronic illness. Preventive treatment also keeps individuals productive and energetic, allowing them to work well into their retirement years. Examples of preventive care services include:
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Principles of Disease Surveillance01:26

Principles of Disease Surveillance

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Disease surveillance is the systematic collection, analysis, and interpretation of health data essential to the planning, implementation, and evaluation of public health practice. This process integrates data dissemination to entities responsible for preventing and controlling disease, injury, and disability. Surveillance systems provide crucial information for action, helping public health authorities make informed decisions to manage and prevent outbreaks, ensure public safety, optimize...
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Healthcare Agencies II01:17

Healthcare Agencies II

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There are various healthcare agencies in the United States—some of which are managed by religious institutions and others by different government branches.
Parish nursing is a growing specialty nursing profession that focuses on holistic healthcare, health promotion, and illness prevention. It blends professional nursing practice with a health ministry, focusing on health and healing within the context of a Christian community. Parish nurses serve as health educators, referral sources,...
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Methods Of Healthcare Delivery System01:26

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At the different levels of the healthcare system, we see varying methods of healthcare used. These methods include managed care systems, case management, and primary healthcare.
Managed Care System:
The managed care system is designed to control the cost while maintaining the quality of care. The patient's care from admission to discharge is planned by the primary care provider or the case manager, also known as the gatekeeper. In a managed care system, the number of care providers is...
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Determining Soil-transmitted Helminth Infection Status and Physical Fitness of School-aged Children
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Public Health.

Matthew Ko1, Shirley Huang2, Karl Brown3

  • 1University of St Andrews, St Andrews, Fife, United Kingdom.

Alzheimer'S & Dementia : the Journal of the Alzheimer'S Association
|December 23, 2025
PubMed
Summary
This summary is machine-generated.

Physical activity, measured by accelerometry, is linked to a lower risk of developing dementia in older adults. This technology offers a reliable method for assessing dementia risk and promoting cognitive health.

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Area of Science:

  • Gerontology
  • Neurology
  • Biomedical Engineering

Background:

  • Elderly individuals face a higher risk of dementia compared to younger populations.
  • Comorbidities can worsen dementia, but the role of physical activity in dementia development remains unclear.
  • Objective measurement of physical activity is needed to understand its impact on dementia risk.

Purpose of the Study:

  • To investigate the association between physical activity, measured by accelerometry, and the incidence of dementia in older adults.
  • To compare the efficacy of accelerometry with self-reported physical capacity in predicting dementia risk.

Main Methods:

  • Utilized wrist-worn accelerometry data from 562 individuals aged 65+ from the National Health and Aging Trends Study (NHATS).
  • Assessed incident dementia using cognitive tests.
  • Analyzed associations between actigraphy measures and dementia, adjusting for covariates like age, gender, and comorbidities.

Main Results:

  • Physical activity measured by actigraphy was significantly associated with a lower risk of incident dementia (OR=0.66, 95% CI [0.55-0.79]).
  • Adjusted analyses confirmed this association (OR=0.68, 95% CI [0.57-0.82]).
  • Receiver operating characteristic (ROC) curve analysis indicated accelerometry outperforms self-reported physical capacity in predicting dementia risk.

Conclusions:

  • Wrist-worn accelerometry is a feasible method for assessing physical activity in older adults.
  • Objective physical activity measurement is significantly associated with reduced dementia risk.
  • Findings support the hypothesis that physical activity may mitigate cognitive decline and dementia.