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Related Experiment Videos

Physiological or pseudophysiological ECG changes in endurance-trained athletes.

P Claessens1, C Claessens, M Claessens

  • 1Department of Cardiology, Imeldaziekenhuis, Bonheiden, Belgium.

Heart and Vessels
|July 27, 2001
PubMed
Summary

Sudden cardiac death risk in athletes can be detected using electrocardiograms. Athletes show cardiac adaptations, but some may indicate underlying pathological conditions, necessitating careful evaluation.

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Area of Science:

  • Cardiology
  • Sports Medicine
  • Exercise Physiology

Background:

  • Sudden cardiac death (SCD) in athletes is a growing concern.
  • Early detection of at-risk individuals is crucial for prevention.
  • Traditional resting electrocardiograms (ECG) can offer diagnostic clues.

Purpose of the Study:

  • To compare cardiac adaptations in competitive triathletes versus controls.
  • To identify potential markers for pathological cardiac changes in athletes.
  • To evaluate the utility of ECG in detecting athletes at risk for SCD.

Main Methods:

  • Noninvasive cardiac assessment including ECG, echo-Doppler, and maximal exercise tests.
  • Comparison of 52 competitive triathletes with 22 control individuals.

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  • Analysis of cardiac structure, function, and electrophysiological responses during exercise.

    • Main Results:

    • Triathletes exhibited left ventricular hypertrophy (eccentric and concentric) and supernormal diastolic function.
    • Hemodynamic adjustments and ECG changes were observed in athletes.
    • Ventricular premature beats at peak exercise may signal pathological adaptation.

    Conclusions:

    • The 'athletic heart syndrome' may not always be a purely physiological entity.
    • ECG analysis is vital for identifying athletes at risk for arrhythmias and SCD.
    • Some athletic cardiac adaptations might represent early stages of hypertrophic or dilated cardiomyopathy.