A total of 141 patients with hip or knee osteoarthritis were randomized to receive either individualized physical activity advice (n=69) or written physical activity prescription plus individualized physical activity advice (n=72). The primary outcome of interest was physical activity (self-reported and accelerometer-assessed). Secondary outcomes included physical function, pain, and quality of life. Outcomes were assessed at baseline, 6, 12, and 24 months. Overall, both groups improved in self-reported physical activity, but there were minor differences between the groups. Pain reduction favored the prescription group (p=0.024). The study concluded that individualized physical activity prescriptions do not offer significant long-term benefits over individualized advice.