Participants assigned to Group A will undergo a structured dynamic stretching protocol, designed to enhance lumbar flexibility, core muscle activation, and postural alignment, specifically targeting the pelvic inclination associated with radicular low back pain (RLBP). The intervention will be administered three times per week under the direct supervision of a qualified physiotherapist. Each session will last for 30 minutes, beginning with a 5-minute warm-up involving light aerobic activity such as marching or gentle trunk rotations to prepare the body for movement. This will be followed by 20 minutes of dynamic stretching exercises, focusing on the major muscle groups that influence pelvic and lumbar mobility.

The Visual Analog Scale (VAS) is a subjective but highly sensitive tool used for assessing pain intensity in clinical and research settings. It consists of a 10- centimeter horizontal line with endpoints labeled "0 = No pain" and "10 = Worst imaginable pain." Participants will be instructed to mark a point on the line that best reflects the intensity of their current pain, both at rest and during movement. The distance (in centimeters) from the "no pain" anchor to the marked point is then measured and recorded as the pain score.

It is a reliable and simple clinical method used to assess lumbar spine flexibility, particularly in the sagittal plane. It measures the extent of lumbar flexion by quantifying the increase in distance between two anatomical landmarks during forward bending. To perform the test, the examiner marks a point at the level of the posterior superior iliac spines (PSIS), which corresponds approximately to the L5 vertebra. A second mark is made 10 cm above and a third mark 5 cm below the initial point. The participant is then asked to bend forward as far as possible while keeping the knees straight.