Biological Parameters Changes After Autologous Blood Transfusion of Red Blood Cells (200 ml) in Healthy Volunteers.

Inclusion Criteria: * Male between 18 and 35 years old * Without health problem nor disease requiring regular medical treatment * Free from any intercurrent acute pathology over 7 days * Healthy volunteers who have regularly sport activity, able to have blood sample and is out-of-competition during the research * Subject who did not practice a competition (or exhaustive training ) 3 days before the blood sample and the autotransfusion * Affiliated to a social security regimen Exclusion Criteria: * Subject with contraindication for drawing blood * Subject with medical pathology contraindicating sport practice * Subject under treatments or drugs in the list of products prohibited for sports practice and competitions, in particular erythropoeitins and erythropoiesis-stimulating agents (updated list of World Anti-Doping Agency https://www.wada-ama.org/fr/liste-des-restrictions). * Subject with physical or mental disability or restriction of liberty that would prevent autotransfusion * Subject without a social security regimen * Subject under guardianship or curatorship * Subject participating in any Interventional study * Positive HIV and/or hepatitis serology * Discovery of a hematological disease