Vol. 5, Issue 7, Part E (2019)

Abstract
Muscle tightness is defined as the decrease in the ability of the muscle to deform, resulting in a decrease in the range of motion at the joint on which it acts. Hamstring muscle tightness is the inability to extend the knee completely when the hip is flexed accompanied by discomfort or pain along the posterior thigh and or knee. Hamstring muscle injuries are one of the most common musculotendinous injuries in the lower extremity. They occur primarily during high speed or high intensity exercises and have a high rate of recurrence. Lack of hamstring flexibility was the single most important characteristics of hamstring injuries in athletes. MET is a manual therapy intervention that can be used to stretch or lengthen muscles and fascia that lack flexibility. MET requires the patient to create a force by activating the targeted musculotendinous unit against a precisely directed counter-force applied by the clinician, followed by relaxation and a passive stretch applied by the clinician. Active release technique is the combination of site specific manual pressure with precise patient movement that makes ART unique to other manual therapy. It is used in patients with acute injuries such as tears, pulls, contractures and in patients with overuse injuries and micro trauma tears.