Surplus Value of Hip Adduction in Leg-Press Exercise in Patients With Patellofemoral Pain Syndrome: A Randomized Controlled Trial

89 patients with patellofemoral pain syndrome were randomized to receive one of three treatments to assess the efficacy of hip adduction exercise in this population. The first group underwent a hip adduction and leg press exercise program, the second group underwent just a leg press exercise program, and the third group received no exercise training. The results from this study, taken over 8 weeks, indicated that both exercise groups demonstrated significant improvements in pain scores and quadriceps leg muscle girth. These findings also indicated no additional benefits of the hip adduction exercises.