TO STUDY THE EFFECT OF PROPRIOCEPTIVE NEUROMUSCULAR FACILITATION ON BACK MUSCLE STRENGTH, PAIN AND QUALITY OF LIFE IN SUBJECTS WITH CHRONIC LOW BACK PAIN AN EXPERIMENTAL STUDY. Int J Physio [Internet]. 2015 Oct. 9 [cited 2026 May 1];2(5):778-85. Available from: https://ijphy.com/index.php/journal/article/view/124