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Asymptomatic bradycardia amongst endurance athletes
Benoit Doyen1, David Matelot2, François Carré3
1Department of Cardiology, CHU UCL Namur , Yvoir , Belgium.
The Physician and Sportsmedicine
|January 15, 2019
Summary
Intensive training lowers resting heart rate, leading to athlete bradycardia. Underlying physiological mechanisms, including ion channel remodeling, are complex and multifactorial, requiring further research for better understanding.
Area of Science:
- Sports Physiology
- Cardiovascular Physiology
- Exercise Science
Background:
- Intensive training is known to decrease resting heart rate.
- Bradycardia in athletes presents management challenges due to poorly understood mechanisms.
- Sinus bradycardia is common in athletes, particularly endurance athletes.
Purpose of the Study:
- To review and elucidate the physiological mechanisms underlying bradycardia in athletes.
- To explore recent advances in understanding the multifactorial origins of this condition.
Main Methods:
- Literature review of described mechanisms for bradycardia in athletes.
- Inclusion of recent physiological findings, specifically concerning ion channel remodeling.
Main Results:
- Bradycardia in athletes is multifactorial.
- Ion channel remodeling in cardiac cells is a potential contributing factor.
- Current knowledge incompletely explains the phenomenon.
Conclusions:
- The mechanisms of athlete bradycardia are complex and not fully understood.
- Further research into cardiac ion channel physiology is warranted.
- Understanding these mechanisms is crucial for effective athlete bradycardia management.
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