Kinesiology researchers have long had an interest in physical activity, fitness, and health issues and in the professional education and work practices of teachers and coaches. The professional development needs and practices of "fitness professionals," however, have not been a major concern for researchers in the field. The purpose of this article is to provide an overview of the evidence on fitness professionals, their role in physical activity for health agendas, and the professional education and training that is available to support them. The analysis indicates that there is a mismatch between the expectations placed upon fitness professionals and the training and professional education that is available to them. It is argued that pedagogy researchers in kinesiology could usefully turn their attentions to this occupational group.

This study investigated the acquisition and development of fitness trainers' knowledge and how this is related to their practice as health and exercise professionals. Semi-structured interviews were conducted with 11 fitness trainers, who had successfully completed a course accredited by a Register of Exercise Professionals (REPs) certifying organization. Findings were organized using Coombs and Ahmed's conceptual framework of formal, nonformal, and informal learning and later analyzed using Sfard's metaphors of learning. Results suggested that fitness trainers learn in multiple and complex ways, many of which are informal and arise through the naturalistic processes that occur within the context of their everyday work. The study concludes that there is a need for greater integration between the current formal (REPs) accreditation system and informal knowledge developed while working as a fitness trainer.