Comparison of High-Intensity Interval Training With Moderate-Intensity Continuous Training in Chronic Non-Specific Low Back Pain Patients

The goal of this clinical trial is to compare the HIIT with MICT in chronic non-specific low back pain patients. The main questions it aims to answer are: * The broad aim of the study is to compare HIIT with MICT in pain reduction in chronic non-specific low back pain patients. * The purpose of this research is to compare HIIT with MICT on disability and quality of life among chronic non-specific low back pain patients. * It also attempts to investigate the relationship between the baseline attributes and outcome variables. Researcher will compare the HIIT to MICT to see the effects on CNSLBP Participants will be: * Allocated to HIIT or MICT group for 6 weeks. * Assessed pre and post intervention. * Continuously monitored during treatment sessions.