This research has been achieved among a population of young Guadeloupean school pupils. It aims to evaluate the importance of gender identity in their sanitary behaviour and especially in their physical and sport practices. A questionnaire adapted to the subject of the study has been submitted to secondary school pupils (n=454). An analysis of crossed stortings, putting the emphasis on the significant links, has been obtained thanks to Modalisa software. As a whole, the results of the questionnaire show that, the construction of gender identité, among Guadeloupean schoolchildren, has major effects not only on commitent to sport practices but also on sociability and the relationship to cultural practices. Yet, it doesn’t seem to have direct impact on nutritional and sanitary habits. The present study shows how the sport space primarily offers an opportunity for integrating social gender structure. At last, the study shows how the sport space offers especially a situation for incorporation of the social gender structure. In such structures, friendly relationship between friends and secondary socialization relay gender Relationship within the family.