Clinical Scorecard: Association Between Exercise Patterns and the Occurrence of Ventricular Arrhythmia in Male Endurance Athletes Aged 50 and Older
At a Glance
Category
Detail
Condition
Ventricular arrhythmia in veteran male endurance athletes
Key Mechanisms
Myocardial fibrosis as a pro-arrhythmic substrate triggered by acute intense exercise
Target Population
Male endurance athletes aged 50 years and older exercising ≥10 hours/week for ≥15 years
Care Setting
Sports cardiology clinical assessment with implantable loop recorder monitoring
Key Highlights
23.5% of studied veteran male endurance athletes developed ventricular arrhythmia, predominantly non-sustained ventricular tachycardia (NSVT).
Myocardial fibrosis was significantly more prevalent in athletes with ventricular arrhythmia (76%) compared to those without (38.3%).
Sustained ventricular tachycardia events occurred exclusively during exercise in athletes with myocardial fibrosis and were preceded by NSVT.
Guideline-Based Recommendations
Diagnosis
Use cardiac magnetic resonance imaging (CMR) to detect myocardial fibrosis in veteran athletes.
Employ implantable loop recorders (ILR) for long-term monitoring of ventricular arrhythmia.
Management
Monitor athletes with myocardial fibrosis closely for ventricular arrhythmias, especially during exercise.
Consider the presence of myocardial fibrosis as a key factor in risk stratification for arrhythmia in veteran athletes.
Monitoring & Follow-up
Continuous exercise tracking using computerized exercise tracking devices (CETDs) to correlate exercise patterns with arrhythmia occurrence.
Long-term ILR monitoring to detect both sustained and non-sustained ventricular arrhythmias.
Risks
Acute intense exercise increases the risk of ventricular arrhythmia in athletes with myocardial fibrosis.
Chronic exercise load does not appear to influence ventricular arrhythmia incidence.
Patient & Prescribing Data
Healthy male endurance athletes aged ≥50 years with long-term high-volume exercise habits
No differences in training volume, intensity, or pattern were associated with arrhythmia occurrence; focus should be on myocardial fibrosis detection and arrhythmia monitoring.
Clinical Best Practices
Screen veteran endurance athletes for myocardial fibrosis using CMR to identify those at risk of ventricular arrhythmia.
Implement ILR implantation for continuous arrhythmia surveillance in high-risk athletes.
Educate athletes about the increased risk of arrhythmia during acute intense exercise if myocardial fibrosis is present.
Use objective exercise tracking data rather than self-reported histories to assess exercise patterns in research and clinical evaluation.
