Adapted physical activity has debated its professional and disciplinary status, but agreement has not been achieved. As a means of objectively evaluating the field for evidence of discipline status, the contents of APAQ (all issues between 1984-2000) and Clinical Kinesiology (1991-2000) were reviewed and compared against four criteria of a discipline: unique knowledge base, methodology, theoretical framework, and terminology. The review indicated that adapted physical activity has a distinct knowledge base but borrows considerable terminology, research methodology, and theory from allied fields. This is likely a reflection of our history, which has been tied to medicine, kinesiology, physical and special education, and some therapies. We conclude that adapted physical activity is a professional field of study with a crossdisciplinary knowledge base, rather than a discipline in its own right.