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

For the Intervention Group (IG), the technique will be applied to the gastrocnemius muscles. In this group, participants will adopt a semi-seated position on a mat, supported by their arms while keeping the body well aligned. The movement will be performed in the direction of the muscle fibers (cephalocaudal), ensuring the accuracy of the technique.

The foam roller will be in contact with the targeted muscle, and the participant will apply pressure until experiencing slight discomfort. In this way, a self-massage will be performed following the direction of the muscle fibers.

The participants will remain at rest in a chair for 4 minutes.

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 at two time points: baseline assessment (M0) and after the intervention/control (M1).

Participants will be instructed to sit with their spine straight and supported against the backrest of the chair, with ankles, knees, and hips positioned at 90 degrees. Arms will remain crossed over the chest to prevent compensatory thoracic movements.

Before the test begins, each participant will be asked to actively perform the flexion and extension movements to the limit of their range of motion, aiming to reduce stiffness and promote familiarization with the assessment protocol.

Measurements will be taken three times for each movement (active flexion and extension), with 30-second rest intervals between each measurement. The average of the three values will be calculated and recorded as the final value.