Training
Prior to delivering RUFIT-NZ, trainers underwent a standardized training session, delivered by a member of the RUFIT-NZ investigator team. Training was supplemented with a standardized trainer’s manual, which outlined key principles to be promoted via RUFIT-NZ, and the nutrition topics to be covered in each session. We also provided PowerPoint presentation templates and participant worksheets, and support sessions and resources were offered to nutritionists to use in group-based sessions. Trainers were provided a nominal fee (paid to the club) to deliver RUFIT-NZ.For RUFIT-NZ we used the Supportive, Active, Autonomous, Fair, and Enjoyable (SAAFE) delivery principles, an evidence-based approach for the planning, delivery, and evaluation of organized physical activity sessions [