Effect of Krill Oil Supplementation on Red Blood Cell Physiology Against Changes in Markers of Iron Metabolism.

Research group: the research will be conducted in a homogeneous group of professional rowers (N=30), all competitors qualified for the Polish Youth Rowing Team: * aged 18 - 24, because the age group must be homogeneous, * the size of the group is about thirty people, which in the case of a homogeneous group will enable statistical analyzes to be conducted. Rowing performance test: at the beginning and at the end of the training camp, participants will perform a test on a rowing ergometer (Concept II, USA), each subject will have to cover a distance of 2000 m in the shortest possible time, which is the distance starting in rowing competitions. The results of both tests will be considered in the selection for the championship team; therefore, athletes will be well motivated to perform both tests with maximum effort. The investigators set a research hypothesis that supplementation with krill oil may have a beneficial effect on athletes by limiting lipid peroxidation and inhibiting ferroptosis which in consequence may lead to red blood cell membrane protection.