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The electrical signals recorded on an electrocardiogram (ECG) occur before the mechanical processes of contraction and relaxation during the cardiac cycle.
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Electrocardiogram01:29

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Real-Time Electrocardiogram Monitoring During Treadmill Training in Mice
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Early repolarisation among athletes.

Femke M A P Claessen1, Heidi A P Peeters2, Bastiaan J Sorgdrager3

  • 1Sports Medicine, Medisch Centrum Haaglanden, Leidschendam, Zuid-Holland, Netherlands.

BMJ Open Sport & Exercise Medicine
|April 2, 2020
PubMed
Summary
This summary is machine-generated.

Athletes show a 50% higher prevalence of early repolarisation (ER) on ECGs compared to non-athletes. This common ECG variant in athletes was not associated with specific sports or training duration.

Keywords:
athletecardiologysports medicine

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Area of Science:

  • Cardiology
  • Sports Medicine
  • Electrocardiography

Background:

  • Early repolarisation (ER) is typically viewed as a benign ECG finding, often seen in young individuals and athletes.
  • Limited research suggests a potential link between ER and adverse cardiac events like sudden cardiac death.
  • A lack of direct comparative studies on ER prevalence in athletes versus non-athletes, and across different sports, necessitates further investigation.

Purpose of the Study:

  • To determine if early repolarisation (ER) is more prevalent in athletes compared to non-athletes.
  • To investigate potential differences in ER patterns among athletes participating in sports with varying intensity types (static vs. dynamic).

Main Methods:

  • Retrospective analysis of electrocardiograms (ECGs) from 2241 adult subjects (2090 athletes, 151 non-athletes) undergoing sports medical screening between 2010 and 2014.
  • Multivariable logistic regression analysis was employed to assess the outcome, controlling for potential confounders.

Main Results:

  • Early repolarisation (ER) was identified in 24% of athletes.
  • Athletes exhibited a 50% higher prevalence of ER compared to the control group (OR 1.5, adjusted 95% CI 1.0 to 2.4).
  • Specific ER patterns showed increased prevalence in athletes: inferior leads only (30%), lateral leads only (120%), and combined inferior and lateral leads (20%).

Conclusions:

  • Athletes demonstrate a significantly higher prevalence of early repolarisation (ER), with a notable increase in inferior lead patterns.
  • No correlation was found between the duration of training or the specific type of sports discipline and the presence of ER.
  • These findings highlight a higher incidence of ER in athletes, warranting consideration in sports cardiology assessments.