Acute Effect of Isometric Excercise on Pain Sensitivity in Adults With Chronic Low Back Pain

Inclusion Criteria :

1. participants aged ≥18 years or older

2. participant diagnosed with non-specific chronic lower back pain (> 12 weeks)

3. Able to perform physical therapy excercise . Exclusion criteria : The study will exclude

1- pregnant women 2- lactating women for one or less than one year post-natal. 3- any certain medical conditions that could interfere with physical activity, including:

• uncontrolled diabetes

• cardiovascular problem

• orthopedic impairments

• balance problems. 4-serious spinal pathologies :

• infection

• fractures

• tumors

• inflammatory diseases like ankylosing spondylitis 5- neurological compromise,

• spinal nerve compromise

• cauda equina syndrome