10 min hot pack application, followed by MET on the Quadratus Lumborum (3 reps with a 7s hold). Flexibility exercises include William flexion with b/L knee-to-chest stretches (10s hold, repeated 10 times) and static stretching of the hamstrings, gastrocnemius, and IT band (5 reps, 5s hold). Strengthening exercises comprise isometric hip flexor activation (5 reps with a 15s hold), side planks (3 reps, 30s hold), and static side bending (5 reps, 10s hold). The intervention will be performed once daily, consisting of 3 sets per session, continued for 4 weeks to enhance flexibility, core stability, and muscular balance, ultimately contributing to pain relief and improved functional mobility in CLBP patients

10-minute hot pack application, followed by William flexion with bilateral knee-to-chest stretches (10s hold, reps 10 times). Flexibility exercises consist of static stretching for the hamstrings, gastrocnemius, and iliotibial band (5 reps with a 5s hold). Strengthening exercises include isometric hip flexor activation (5 reps with a 15s hold), side planks (3 reps with a 30s hold), and static side bending (5 reps with a 10s hold). The protocol will be performed once daily, with 3 sets per session, continued for 4 weeks to improve flexibility, core stability, and pain management in CLBP patients.

10-minute hot pack application, followed by MET on the Quadratus Lumborum (3 repetitions with a 7-second hold). Flexibility exercises include William flexion with bilateral knee-to-chest stretches (10-second hold, repeated 10 times) and static stretching of the hamstrings, gastrocnemius, and iliotibial band (5 repetitions with a 5-second hold). Strengthening exercises comprise isometric hip flexor activation (5 repetitions with a 15-second hold), side planks (3 repetitions with a 30-second hold), and static side bending (5 repetitions with a 10-second hold). The intervention will be performed once daily, consisting of 3 sets per session, continued for 4 weeks to enhance flexibility, core stability, and muscular balance, ultimately contributing to pain relief and improved functional mobility in CLBP patients

It is the tool to measure pain intensity It ranges from 0 to 10. If the patient feels no pain, then 0 will be marked. 5 shows moderate pain and 10 will be marked if pain is most extreme ever felt by the patient.(10) The patients were asked to mark the point they felt their pain accordingly

Spirometry is a vital pulmonary function test used to assess lung health by measuring Peak Expiratory Flow (PEF)

Chest expansion was measured in a standing position with elbows slightly flexed and hands on hips, using a non-stretchable inch tape at the 2nd intercostal space (ICS), 4th ICS, and xiphoid process. Participants performed maximal deep inspiration and expiration, and the difference was recorded.

Unidimensional, nine-item self-reported questionnaire designed to assess the severity and impact of fatigue on daily functioning and quality of life over the past week. Participants rate each item on a 7-point Likert scale (1 = strongly disagree, 7 = strongly agree), with higher scores indicating greater fatigue severity. The total score is calculated by summing the individual item scores, resulting in a range from 9 to 63, with a score of ≥36 indicating significant fatigue.

The inclinometer is a reliable and valid tool for measuring lumbar range of motion (ROM), including flexion, extension, and side bending. To use the inclinometer, place one device on the T12 vertebra and another on the S1 vertebra while the patient stands in a neutral posture. The patient then performs forward bending.