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Related Concept Videos

Dose-Response Relationship: Overview01:03

Dose-Response Relationship: Overview

Agonists can bind with and activate receptors, resulting in the formation of drug-receptor complexes. Once formed, these complexes catalyze many biochemical processes at the cellular level and subsequently induce a pharmacologic response. The degree of response is directly proportional to the fraction of activated receptors, which in turn, depends on the concentration of the drug at the receptor site as well as the sensitivity of the receptor. An increase in the administered dose contributes to...
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Updated: May 30, 2026

Orienteering as a Tool for Cognitive Research: An Implementation Guide
07:13

Orienteering as a Tool for Cognitive Research: An Implementation Guide

Published on: November 29, 2024

Dose-response relation between physical activity and cognitive function: guangzhou biobank cohort study.

Lin Xu1, Chao Qiang Jiang, Tai Hing Lam

  • 1Department of Community Medicine, School of Public Health, University of Hong Kong, China.

Annals of Epidemiology
|July 26, 2011
PubMed
Summary

Regular physical activity significantly boosts cognitive function, especially in older Chinese adults. Higher activity levels correlate with better memory recall, with benefits more pronounced in those with poorer self-rated health.

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Last Updated: May 30, 2026

Orienteering as a Tool for Cognitive Research: An Implementation Guide
07:13

Orienteering as a Tool for Cognitive Research: An Implementation Guide

Published on: November 29, 2024

Area of Science:

  • Gerontology
  • Cognitive Neuroscience
  • Public Health

Background:

  • Cognitive decline is a growing public health concern in aging populations.
  • Understanding modifiable lifestyle factors, such as physical activity, is crucial for maintaining cognitive health.

Purpose of the Study:

  • To investigate the dose-response relationship between physical activity levels and cognitive function.
  • To examine this association in a large cohort of Chinese adults aged 50-85 years.

Main Methods:

  • Cross-sectional analysis of 27,651 participants (aged 50-85 years).
  • Data collected on demographics, lifestyle, health history, and cognitive function using the delayed 10-word recall test (DWRT).
  • Physical activity assessed using the International Physical Activity Questionnaire, categorized by metabolic equivalent values (METs).

Main Results:

  • A significant dose-response association was observed between physical activity (METs) and DWRT scores.
  • Participants with the highest physical activity levels showed a 28% reduced risk of mild cognitive impairment.
  • This association remained significant after adjusting for potential confounders, including depression.

Conclusions:

  • Physical activity demonstrates a significant dose-response relationship with cognitive function.
  • The positive impact of physical activity on cognition is more pronounced in individuals with poor self-rated health.