Title: The influence of sport nutrition in the fitness market   Supervisor: Venilton Reinert   Course: Strategic Marketing with Independant Project   Purpose: The objective of the thesis was to get a better comprehension and knowledge by the examination of links between the marketing influence of sport nutrition on people's decision to practice fitness. In fact, the marketing influence of sport nutrition contribute to create new trends of fitness practicing in France.   Methodology: To write this thesis, secondary data coming from books, scientifical revue, website has been used. A quantitative research method and an explorative and descriptive research approach has been used for this study. Then, a questionnaire using a convenience and snowball sample has been done to collect primary data.   Conclusion: Sport nutrition companies’ want to influence people to practice fitness to gain market share. Their product are linked to the practice of fitness therefore, convince people to practice fitness make them gain new potential customers.