Comparative Effect of Virtual Reality and Core Stability Exercises in Patients With Non-specific Chronic Low Back Pain

The questionnaire examines the level of disability in 10 everyday activities of daily living.

Each item consists of 6 statements which are scored from 0 to 5. With 0 indicating the least disability and 5 the greatest then the total score is calculated as a percentage, with 0% indicating no disability and 100% indicating the highest level of disability, disability scores ranging from 0-19% indicate minimal disability, 20-39% indicate moderate disability,40-59% indicate severe disability, 60-79% indicate crippling disability, and scores ranging from 80-100% indicate people who are confined to bed.

Pain intensity Level will be measured using the VAS that consists of a 10-cm straight line with endpoints defining pain intensity.

All patients will be asked to mark their pain level that corresponds to their pain intensity on the line between "0", representing "no pain", and "10", representing "the worst pain imaginable". The distance between "0" and the mark made by the patients was measured using a ruler; a higher score indicates greater pain intensity.

Leg length discrepancy will be measured before applying the (SEBT) for normalization of test results, SEBT will be accomplished while participants are standing on the dominant leg, and participants will be asked to reach as far as they could along a grid in the anterior, posteromedial, and posterolateral directions with the tip of the great toe of the non-stance limb. Participant's hands held at the iliac crest during the test, If the individual touches heavily or comes to rest at the touch-down point, has to make contact with the ground with the reaching foot to maintain balance, or lifts or shifts any part of the foot of the stance limb during the trial, the trial is not considered complete.

The AROM was determined by BROM and done by calculating the difference between the angle recorded in the starting position and the angle recorded at the end position. (Suriyaamarit et al., 2024) First step in measuring ROM is finding the reference points, which consisted of the base of the sacrum and the spinous process of thoracic spine level 12. The base of the sacrum was located by drawing a line between the posterior superior iliac spine (PSIS) (the same level as the S2 spinous process) and counting up from the base of the sacrum. The spinous process of thoracic spine level 12 was located by counting up six levels from the 1st reference point. These two references were used to place the flexion/extension unit and the BROM R/L unit.

is a self-report questionnaire, in its original form, the TSK is a 17 item assessment checklist. It uses a 4-point Likert scale (Strongly Disagree-Disagree-Agree-Strongly Agree) with statements that have been later linked to the model of fear-avoidance, fear of work-related activities, fear of movement, and fear of re-injury. The total score ranges from 17 to 68, with higher scores indicating greater levels of kinesiophobia. (Lundberg et al., 2011) Scores above 37 suggest the presence of clinically significant kinesiophobia, while scores below 37 are considered to be within the normal range.