Comparison of the Immediate Effect of Passive vs. Passive-Active Hamstring Stretching on Flexibility in Patients With Chronic Low Back Pain

Passive-active stretching (PAS) combines conventional passive stretching with active exercises designed to activate muscles that promote hamstring elongation. On the other hand, passive stretching (PS) is a commonly administered intervention to improve hamstring flexibility.

Participants will receive one minute of passive hamstring stretching applied three times for each lower limb, with a 30-second rest time between stretches.