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Changes of Cardiac Function During Ultradistance Trail Running.
Romain Jouffroy1, Vincent Caille1, Stéphane Perrot2
1Intensive Care Unit, Ambroise Paré Hospital, Assistance Publique-Hôpitaux de Paris, Université de Versailles Saint-Quentin, Boulogne, France.
The American Journal of Cardiology
|August 22, 2015
Summary
Ultrarunning can impair heart function, with 48% of runners showing reduced left ventricular systolic function post-race. Diastolic dysfunction appears earlier than systolic dysfunction during these endurance events.
Area of Science:
- Cardiology
- Sports Medicine
- Exercise Physiology
Background:
- Marathon running is known to cause temporary cardiac dysfunction.
- Limited data exist on cardiac effects of ultradistance trail running.
Purpose of the Study:
- To evaluate echocardiographic parameters in participants of an 80-km trail race.
- To assess left ventricular (LV) systolic and diastolic function during ultradistance running.
Main Methods:
- Observational study of 66 ultrarunners (80-km race).
- Echocardiography performed pre-race, on arrival, and serially at 21 km and 53 km for 28 participants.
- Assessed conventional 2D and Doppler LV parameters, including longitudinal strain.
Main Results:
- Significant decrease in LV systolic function parameters on arrival (p ≤0.002).
- 48% of participants exhibited reduced LV systolic function post-race.
- Diastolic dysfunction (decreased mitral E/A ratio and e' wave) observed from 21 km.
- Global longitudinal strain significantly decreased by 53 km (p = 0.0008).
Conclusions:
- Ultradistance trail running can induce LV systolic and diastolic dysfunction in amateur runners.
- Diastolic dysfunction precedes systolic dysfunction.
- Longitudinal strain is an early indicator of LV systolic dysfunction in ultrarunners.
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