Acute Effects of Electromyography Biofeedback Training on the Joint Position Sense and Pain in Adults with Patellofemoral Pain

OBJECTIVES Electromyography (EMG) is a common technique used in clinical settings, which utilizes visual biofeedback to correct muscle activation during exercise. However, it unclear whether the correction of by EMG training restores proprioception, dynamic stability, and pain. In addition, our knowledge, no study has investigated acute on proprioception adults with patellofemoral pain.METHODS The participants were twenty-nine (23 males 6 females) aged ≥ 20 years We randomly assigned either (EBT) group (n=15, mean age: 20.13±1.55 years) or control (n=14, 20.93±2.43 years). Proprioception knee joint was measured using position sense (30°, 45°, 60°) tests. A numerical rating scale (NRS) confirm level intervention received increase vastus medialis oblique muscle, providing EMG.RESULTS positional error evaluated 45° significantly decreased after (EBT: pre= 3.76±2.33°, post= 2.11±1.85°, <i>P=0.020</i>), an interaction between time (<i>P=0.028</i>), but not other positions (30° 60°). NRS score reduced 3.87±2.20, 2.00±1.46, <i>P=0.001</i>), significant (<i>P=0.001</i>).CONCLUSIONS findings suggest that pain improvement observed positions. Further research needed evaluate short- long-term treatment associated outcomes proprioception.