Effect of High-power Laser Acupuncture on Fatigue and Proprioception in Low Back Pain

To investigate the effect of high-intensity laser acupuncture on fatigue, proprioception, back pain and Pain self-efficacy in patients with chronic nonspecific low back pain (CNLBP).

Inclusion Criteria: * 1\. The patients had CNSLBP with age from 20 to 40 years from both genders. 2\. Patients diagnosis with chronic low back pain without underlying pathological causes. 3\. The patients with chronic nonspecific low back pain more than 3months. Minimum pain intensity of 30 mm on the visual analogue scale (VAS) for pain, which ranges from 0 to 100 mm. 4\. Patients with BMI ranges between 18.5:29.9 kg/m2. 5\. The study populations must be willing to participate in the study Exclusion Criteria: 1. Neurological, infectious diseases and systemic illness such as rheumatologic diseases,systemic lupus erythematosus, diabetes mellitus type I or II. 2. Psychiatric/mental deficit. 3. Patients who had a previous surgical history (within 6 months) will also excluded 4. participation in other treatment within the previous 3 month. 5. Pregnancy. 6. History of spinal fracture, tumor, osteoporosis