Objective: To explore whether participating in the Benefits of Effective Exercise for knee Pain (BEEP) trial training program increased physiotherapists' self-confidence and changed their intended clinical behavior regarding exercise for knee pain in older adults. Design: Before/after training program evaluation. Physiotherapists were asked to complete a questionnaire before the BEEP trial training program, immediately after, and 12 to 18 months later (postintervention delivery in the BEEP trial). The questionnaire included a case vignette and associated clinical management questions. Questionnaire responses were compared over time and between physiotherapists trained to deliver each intervention within the BEEP trial. Setting: Primary care. Participants: Physiotherapists (N=53) who completed the BEEP trial training program. Interventions: Not applicable. Main Outcome Measures: Self-confidence in the diagnosis and management of knee pain in older adults; and intended clinicalbehavior measured by a case vignette and associated clinical management questions. Results: Fifty-two physiotherapists (98%) returned the pretraining questionnaire, and 44 (85%) and 39 (74%) returned the posttraining and postintervention questionnaires, respectively. Posttraining, self-confidence in managing older adults with knee pain increased, and intended clinical behavior regarding exercise for knee pain in older adults appeared more in line with clinical guidelines. However, not all positive changes were maintained in the longer-term. Conclusions: Participating in the BEEP trial training program increased physiotherapists' self-confidence and changed their intended clinical behavior regarding exercise for knee pain, but by 12 to 18 months later, some of these positive changes were lost. This suggests that brief training programs are useful, but additional strategies are likely needed to successfully maintain changes in clinical behavior over time. (C) 2016 by the American Congress of Rehabilitation Medicine