It is well known that prudent nutrient intake and certain dietary constituents improve physical performance and/or maintain physical condition in youth football players. In Japan, all of adolescent football players registered into Japan Football Association belong to only one team under three different organizations: Nippon Junior High School Physical Culture Association (school-based team), Japan club youth football federation (town-based club team), and J. league (academy team). Therefore, the aim of this study is to compare the psychological status for proper diet and nutritional status in adolescent football players belonging to three different teams.
