Effect of Neuromuscular Electrical Stimulation Applied to the Lumbar Multifidus Muscle on Sit to Stand Kinematics in Individuals With Low Back Pain

The goal of this randomized controlled trial, is to investigate the effect of superimposed NMES and conventional NMES applied to the lumbar multifidus muscle on body kinematic and kinetic values during the sit-to-stand in individuals with non-specific low back pain. Our study will include 24 participants between the ages of 18-65. Which physiotherapy intervention will be applied to the participants will be determined by the block randomization method, using a table of random numbers. After randomization; NMES to the participants\' lumbar multifidus muscle during physiotherapy intervention will be applied in two groups; In the first group, NMES will be applied with the conventional technique during prone position and in the second group, NMES will be applied with the superimposed technique during the sit-to-stand activity. Evaluations will be made twice for each participant- before and after the intervention. During the evaluation, data regarding the change in body kinetics and kinematics of individuals during the sit-to-stand activity will be recorded with a Vicon camera system. For secondary outcome measures, a visual analog scale will be used to evaluate pain, the Roland Morris Disability Questionnaire and the Oswestry Disability Index will be used to evaluate functional status, and the Tampa Kinesiophobia Scale will be used to evaluate fear-avoidance behavior.