The study aimed to investigate the efficacy of core strengthening and intensive dynamic back exercises on pain, muscle strength, endurance, and functional disability in patients with chronic non-specific low back pain.

The study will be based on a three-arm parallel group randomized control design. Forty-five participants with chronic non-specific low back pain will be recruited from the Physiotherapy department, at Integral University, India. Study objectives and procedure will be properly explained and written informed consent will be obtained at the beginning of the study. All the participants will be randomly divided into three groups A, B, and C. Experimental group A will be receiving the hot pack, active Stretching, isometric exercise intervention, and core strengthening exercises while group B will receive the hot pack, active Stretching, isometric exercise intervention, and intensive dynamic back exercises, control group C will receive the hot pack, active Stretching, isometric exercise intervention.

Inclusion Criteria:

• age 20-50 years
• chronic low back pain (>3 months),

Exclusion Criteria:

• Participants with low back pain related to cancer,
• infection,
• inflammatory arthropathy,
• high-velocity trauma,
• fracture
• low back pain associated with severe or progressive neurological deficits trauma
• pregnancy.