Key Aspects of Marathon Running and Heart Health:
- Long-Term Risks: Some studies suggest that lifelong, extreme endurance training might lead to higher coronary artery plaque, myocardial fibrosis (scarring), and an increased risk of atrial fibrillation.
- Sudden Cardiac Death: While rare, the risk of sudden death during a marathon exists, usually due to underlying, undetected coronary artery disease.
- Survival Rates: Marathon runners are generally better able to survive cardiac events compared to sedentary individuals.
- Benefits of Training: Moderate to high-volume training reduces blood pressure and arterial stiffness, improving overall cardiovascular fitness.
- Acute Effects: Immediately following a marathon, runners may experience temporary right ventricle dilation and increased levels of heart-related enzymes (biomarkers), which usually resolve within a week
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