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Thoracic, aortic arch and abdominal aneurysms are significant vascular conditions that can present with various clinical manifestations and lead to serious complications. Understanding these manifestations and the appropriate diagnostic studies is essential for effective management and treatment.Thoracic Aortic AneurysmsThoracic aortic aneurysms often remain asymptomatic until they reach a size that impinges on adjacent structures. They typically cause deep, diffuse chest pain that radiates to...
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Aneurysm management involves either conservative medical therapy or surgical intervention, depending on the size and symptoms of the aneurysm. Conservative management is generally reserved for smaller, asymptomatic aneurysms, while larger or symptomatic aneurysms often necessitate surgical repair.Conservative Medical TherapyFor small, asymptomatic aneurysms, particularly abdominal aortic aneurysms (AAA) less than 5.5 centimeters in diameter, conservative medical therapy is recommended. This...
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Related Experiment Video

Updated: Mar 27, 2026

Visualization of Intensity Levels to Reduce the Gap Between Self-Reported and Directly Measured Physical Activity
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Association Between Questionnaire- and Accelerometer-Based Physical Activity and Abdominal Aortic Aneurysm Incidence.

Ru Li1,2,3, Fang Lei4,5, Bo Liu4

  • 1Department of Cardiology Renmin Hospital of Wuhan University Wuhan China.

Journal of the American Heart Association
|March 25, 2026
PubMed
Summary

Engaging in regular physical activity (PA) significantly reduces the risk of abdominal aortic aneurysm (AAA), even for individuals with a high genetic predisposition. Optimal benefits are achieved at specific weekly durations for moderate-to-vigorous PA intensities.

Keywords:
abdominal aortic aneurysmphysical activityrestricted cubic splines

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Area of Science:

  • Cardiovascular Health
  • Epidemiology
  • Genetics

Background:

  • Physical activity (PA) is linked to abdominal aortic aneurysm (AAA) risk, but previous research lacked objective PA data and genetic interaction analysis.
  • Investigating the relationship between objective PA measures, genetic predisposition, and AAA risk is crucial for understanding disease etiology.

Purpose of the Study:

  • To examine the association between different intensities of physical activity and the risk of developing abdominal aortic aneurysm (AAA).
  • To assess the influence of genetic susceptibility, measured by polygenic risk scores, on the relationship between physical activity and AAA risk.
  • To determine optimal physical activity thresholds for maximal AAA risk reduction.

Main Methods:

  • Utilized UK Biobank data from 392,737 participants (questionnaire PA) and 92,101 participants (accelerometer PA), all AAA-free at baseline.
  • Categorized PA into light, moderate, vigorous, and total activity; incident AAA cases were identified using ICD-10 and OPCS-4 codes.
  • Employed Cox proportional hazards models, restricted cubic splines for dose-response analysis, and isotemporal substitution models to evaluate PA's impact and genetic interactions.

Main Results:

  • Higher levels of moderate-intensity, vigorous-intensity, and total PA were associated with a reduced risk of AAA.
  • Protective effects of PA were more pronounced in individuals with lower genetic risk.
  • Nonlinear associations were found for moderate- and moderate-to-vigorous PA, with maximal risk reduction observed at specific weekly durations (e.g., 402.6 minutes for moderate-intensity PA).
  • Replacing light-intensity PA with moderate- or vigorous-intensity PA decreased AAA risk, with greater benefits from vigorous-intensity PA.

Conclusions:

  • Physical activity engagement is inversely associated with abdominal aortic aneurysm (AAA) risk, irrespective of an individual's genetic predisposition.
  • Specific time thresholds exist for different PA intensities to achieve maximum AAA risk reduction.
  • These findings support the integration of exercise-based strategies into public health initiatives for AAA prevention.