Study of Recovery and Blood Rheology Changes in Ultra-endurance Runners (ERUPTION-3)

While the acute consequences of an ultratrail are beginning to be well documented, data on the study of recovery in the aftermath of an event are much rarer.In order to overcome these various limitations, the main study of the ERUPTION-3 project is set up on the Grand Raid de La Réunion 2022 races.In the context of exercise responses, the rheological properties of blood can impact the endurance performance. In contrast to short-distance events, the study of blood rheology and red blood cells integrity in long-distance events such as ultra-endurance races is poorly documented in the literature.In the ancillary study, the work that is intended to be carried y out will complement the initial results found by a previous research on 23 runners during the Ultra Trail du Mont Blanc. This ancillary study will also be an opportunity to complete the data from the main study by studying the kinetics of biomarker recovery.

Inclusion Criteria:>18 yearsParticipating in the Grand Raid de la Réunion race (Mascareignes, Trail de Bourbon or Diagonale des fous)Affiliated or beneficiary of a social security schemeNot opposed to the research for the main studyHaving given their written consent for the participants of the ancillary studyExclusion Criteria:Not understanding FrenchProtected adult (guardianship or curatorship) or under court protectionWho have difficulty swallowing paracetamol capsules and for whom it will therefore be difficult to swallow the e-Celsius® Performance capsules (for the ancillary study)