The foam roller group is the group where the person uses his/her own weight to swing the hamstring muscle with a foam roller.

This is a technique applied by a practitioner to this group of people with hamstring tightness.

In this intervention group, the patient is given back and forth oscillations using his or her own weight using a foam roller under the supervision of a physiotherapist.

The individual is asked to actively extend the knee while the hip and knee are in a 90˚ flexion position.

Participants remove their shoes, place the soles of their feet on the sit-and-reach box, and, without bending their knees, reach forward as far as possible by placing their hands on top of each other. The distance between them is measured.

It refers to the participants' knee extension and flexion joint range of motion. It is measured with a goniometer by the physiotherapist after the appropriate position is given.

The subject is asked to stand with one foot in the middle and extend as far as possible along a Y line, which is 135˚ between the anterior and posterior directions and 90˚ between the posteromedial and posterolateral directions. The starting distance and the final distance are measured.