PNF (Hold-Relax) Hamstring Stretch – lie on the mat, supine position. With left lower limb outstretched, comfortably flex the right lower limb. Upper limbs comfortably by your side.
Partner kneels with one leg across your lower left limb, torso erect. Left hand on your right heel (to provide resistance), right hand over the right patella (to resist flexion).
Begin the Hamstring Stretch by a passive pre-stretch (thigh flexion) that is held at the point of mild discomfort for 10 s.
The partner applies a hip flexion force (pushing forward) and you are required to “hold and don’t let me move the leg” while you “hold” and resist the movement so that an isometric muscle action occurs and is held for 6 s.