Interaction between physical exercise and APOE gene polymorphism on cognitive function in older people

Area of Science:

• Neuroscience
• Genetics
• Gerontology

Background:

• The relationship between physical exercise and cognitive function, particularly in Alzheimer's disease (AD), is complex and warrants further investigation.
• The apolipoprotein E (APOE) gene polymorphism, specifically the ε4 allele, is a known risk factor for AD and may influence cognitive responses to exercise.

Purpose of the Study:

• To review existing literature on the interaction between physical exercise, APOE gene polymorphism, and cognitive function.
• To examine the effects of physical exercise on cognitive function, both independently and in relation to APOE ε4 allele carrier status.

Main Methods:

• Systematic literature review of studies investigating physical exercise, APOE genotype, and cognitive outcomes.
• Analysis of findings related to cognitive function in healthy individuals and patients with Alzheimer's disease.
• Examination of studies differentiating APOE ε4 carriers and non-carriers.

Main Results:

• Evidence is mixed regarding the direct impact of physical exercise on cognitive function, with some studies showing benefits (e.g., improved memory) and others showing no significant association.
• Physical exercise is generally recognized to improve well-being and social interaction in the elderly, enhancing quality of life.
• A trend suggests that APOE ε4 carriers may experience greater cognitive benefits from physical exercise compared to non-carriers, though larger studies are needed.

Conclusions:

• Standardized protocols and longitudinal studies are crucial for a clearer understanding of physical exercise's effects on cognitive function.
• While direct cognitive benefits are debated, exercise positively impacts elderly well-being.
• Further research with larger sample sizes is necessary to accurately determine the relationship between physical exercise, APOE genotype, and cognitive function in AD.