Objectives: : The aim of the study was to understand the physical therapist's experience and perception of the support they give to their older patients or clients to continue exercising. Methods: : Using purposive sampling, we recruited fifteen physical therapists with more than 5 years of clinical experience and conducted semi-structured interviews. We analyzed the transcribed data using thematic analysis. Results: : Three main themes emerged: (1) the expected results as healthcare professionals, (2) clinical experience and continuing professional development, and (3) limited educational opportunities. Physical therapists struggled to achieve a certain level of exercise adherence in their patients, and the low success rate decreased their confidence. We found that physical therapists needed not only to rely on clinical experience but also to integrate scientific evidence to implement better behavioral change techniques; they would also appreciate receiving appropriate educational opportunities. Conclusions: : This study revealed a possibility of educational insufficiency for physical therapist to support of behavior change to improve exercise adherence in the older population.