The criterion measure of hamstring flexibility was determined by executing a maximum PSLR on each
limb (American Academy of Orthopaedic Surgeons, 1996). This test was selected due to its widespread
acceptance as the criterion measure for hamstring flexibility and its high reliability (0.95-0.99) (Minkler and
Patterson, 1994; Patterson et al., 1996). A manual goniometer (Lafayette®, U.S.A.) was used to measure the hip
angle. Tests were administered by three experienced clinicians, one responsible for fixing the pelvis and the
opposite thigh to the table, another in charge of lifting the leg, while the third carried out the measurement with
the goniometer.