A myofascial release technique will be performed using a foam roller (Blackroll Standard, 30 x 15 cm) on the dominant lower limb.

For the IG 1, the technique will be applied to the hamstrings muscles. In this group, participants will sit on the floor on a mat with the roller under their thighs. Their hands will be placed on the floor with their fingers pointing downwards. The foam roller will be in contact with the muscle being tested and the patient will exert a load until they feel a slight pain. In this way, the patient performs a self-massage in the direction of the muscle fibers. The limb that will not be tested will function as a lever, it will remain bent to the side, which will allow the simple realization of the glide.

A cycle of the procedure will be defined as a proximal to distal rolling movement, so the frequency in this study will be 25 cycles per minute measured with a metronome from a mobile application (Smart Metronome & Tuner v.11.8 IOS).

A myofascial release technique will be performed using a foam roller (Blackroll Standard, 30 x 15 cm) on the dominant lower limb.

The IG 2 will perform the same technique on a different muscle group: the quadriceps. In this way, the positioning will be different, the participants will be in the prone position, in a plank position, leaning on the forearms, the body well aligned and the studied lower limb well stretched. However, the participant will also perform a self-massage in the direction of the muscle fibers until they feel slight pain. The duration of the procedure will be set at 4 minutes in this study; 3 rounds of 1 minute (30 s rest).

A cycle of the procedure will be defined as a proximal to distal rolling movement, so the frequency in this study will be 25 cycles per minute measured with a metronome from a mobile application (Smart Metronome & Tuner v.11.8 IOS).

The foam roller will be in contact with the muscle being tested and the patient will exert a load until they feel a slight pain. In this way, the patient performs a self-massage in the direction of the muscle fibers.

Data will be collected in two moments: baseline (M0) and after the intervention/control (M1). Participants will be asked to sit with their spine straight against the back of the chair. The ankles, knees and hips of the subjects will be positioned at right angles and the arms crossed over the chest to minimize thoracic movements.

The position of the goniometer (GIMA, 37.5 x 6.5 x 0.5 cm) will be as follows: the fixed point at the level of the external acoustic meatus, and the mobile arm at the level of the base of the nose (initial position: 90°). The fixed arm will be immobile, parallel to the ear and perpendicular to the ground. Prior to the test, each participant will have performed both movements until the final sensation is reached in order to increase the fluidity of the test. Thus, the first movement asked of the patient will be a flexion followed by an extension (the examiner will take the average of three measurements).