Study of the Aorta Adaptations to Exercise in Triathletes During Sports Season (CoATri)
Study of the Aorta Adaptations to Exercise in Triathletes During Sports Season (CoATri)
Regular sustained physical activity creates a cardiac remodelling : it is athlete's heart. In
 our preliminary work published in 2016, the investigators demonstrated in a small population
 of triathletes that there is also a vascular remodelling named athlete's artery. Moreover,
 the investigators know that left ventricle and aorta behave together like a couple. So they
 want to study by Cardiovascular Magnetic Resonance Imaging the impact of triathlon on the
 cardiac AND aortic remodelling.
Inclusion Criteria:

 -  to be enrolled in a social security plan.

 -  to have a BMI between 18,5 and 25 kg/m²

 -  to have received full information on the organization of the research and having
 signed its informed consent

 -  to have carried out a clinical screening adapted to the research

 *** Triathlete group:

 -  to have a minimum performance level: between 2h and 2h45 on an M triathlon during the
 past year (provide proof),

 -  to participate in 2018 in a long distance triathlon, i. e. at least distance L

 -  to have a defined training volume: less than 8 hours per week during the winter months
 and between 10 and 15 hours per week in preparation of the objective

 ***Control group:

 -  to have no more than 150 minutes of moderate physical activity per week (footing,
 brisk walking, cycling, etc.).

 Exclusion Criteria:

 -  Persons referred to in Articles L. 1121-5 to L. 1121-8 and L1122-2 of the Public
 Health Code

 -  Cardiovascular history including Ii.e. known heart rhythm disorders

 -  Chronic disease: diabetes, high blood pressure...

 -  Long-term drug therapies that may modify cardiovascular remodeling such as Conversion
 Enzyme Inhibitor, Angiotensin II Receptor Antagonist,

 -  Active smoking, even if occasional

 -  Contraindication to MRI