Title: Nutrition awareness of U19 football players Objectives: The primary aim of the bachelor thesis was to determine the knowledge of individual players in the field of rational diet and then to evaluate these results obtained by means of an online survey. A secondary aim of the study was to gain insight into the extent to which individual players are interested in the use of a rational diet during their sporting career. Methods: In the practical part of the bachelor thesis a quantitative research strategy in the form of a survey was used. The questionnaire survey was used to collect data about the probands and their eating habits and awareness on the issue of rational diet. The results were evaluated and the results were shared with the representatives of the clubs where the survey was conducted. For ethical reasons, only adults or probands over 18 years of age were approached for the survey, as there was no use of invasive methodologies and the questions were not personal in any way, were anonymous only, and no approval was sought from the UK FTVS Ethics Committee. Results: The questionnaire survey showed that football players are quite informed about the topic of rational dietary principles, but their knowledge of this topic is not at a level where they can navigate it completely...