Patients will receive 8 sessions of motor control exercise program of 30 min duration for 4 weeks, twice per week. Exercises will be demonstrated to the participants by an experienced physical therapist. On each session, the therapist will correct each subject personally. Participants will be asked for practicing the exercises at home once daily for 20 minutes over the 8-week intervention period. The motor control exercise program will consist of a progression from isolated contraction of the transversus abdominis and/or isolated contraction of the multifidi to combined contraction of both transversus abdominis in different positions from supine or prone to bridging or four-point kneeling.

Patients will receive 8 sessions of motor control exercise program of 30 min duration for 4 weeks, twice per week. Exercises will be demonstrated to the participants by an experienced physical therapist. On each session, the therapist will correct each subject personally. Participants will be asked for practicing the exercises at home once daily for 20 minutes over the 8-week intervention period. The motor control exercise program will consist of a progression from isolated contraction of the transversus abdominis and/or isolated contraction of the multifidi to combined contraction of both transversus abdominis in different positions from supine or prone to bridging or four-point kneeling. In addition, participants allocated to the neurodynamic group will also receive a nerve neurodynamic slider intervention targeting the main trunk of the sciatic nerve of the affected side during al treatment sessions (n=8).

Patients will receive 8 sessions of motor control exercise program of 30 min duration for 4 weeks, twice per week. Exercises will be demonstrated to the participants by an experienced physical therapist. On each session, the therapist will correct each subject personally. Participants will be asked for practicing the exercises at home once daily for 20 minutes over the 8-week intervention period. The motor control exercise program will consist of a progression from isolated contraction of the transversus abdominis and/or isolated contraction of the multifidi to combined contraction of both transversus abdominis in different positions from supine or prone to bridging or four-point kneeling.

A Numerical Pain Rate Scale (NPRS, 0-10) where 0 represents no pain and 10 the maximum pain will be used to record the mean intensity of pain in the lower extremity

The Self-report Leeds Assessment of Neuropathic Symptoms and Signs Scale (S-LANSS) will be used for assessing neuropathic mechanism. The S-LANSS is a 7-item tool for identifying patients whose pain is dominated by neuropathic mechanisms. Each item is a binary response (yes or no) to the presence of symptoms (5 items) or clinical signs (2 items). The total score is 24 points and a value ≥ 12 points is indicative of a neuropathic component of pain.