The goal of this clinical trial is to learn whether Active Release Technique (ART) or Proprioceptive Neuromuscular Facilitation (PNF) is more effective in improving hamstring flexibility in adults with specific low back pain. It will also look at how these treatments affect pain and movement. The main questions it aims to answer are: Does ART or PNF improve hamstring flexibility more in people with specific low back pain? Do participants report reduced pain and better movement after receiving either treatment? Researchers will compare the effects of ART and PNF to see which method works better for improving flexibility and reducing pain. Participants will: Receive either ART or PNF therapy for 2 weeks Attend regular physiotherapy sessions during the treatment period Be assessed before and after treatment for hamstring flexibility and pain levels
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Hamstring Flexibility (measured by Passive Straight Leg Raise Test)
Timeframe: at baseline then at 2nd and at 4th week after the last Session