In the intervention of the experimental group, the investigator will be primarily on the right side of the volunteer and identify C3 through the cervical reference of jaw angle, which is at the disc level between C2/C3 and then contact with the phalanges of third metacarpal in the left transverse of this vertebra.

The volunteer will be seated with 110º of hip and knee flexion using a digital goniometer and will be asked to breath normally.

The investigator will be primarily on the right side of the volunteer and identify the C3 vertebra, having as anatomical reference the angle of the jaw, which is at the disc level between C2/C3 and then contact, with the phalanges of the third metacarpal, the left transverse apophysis of this vertebra.

The volunteer will be seated with 110º of hip and knee flexion using a digital goniometer and will be asked to breath normally.

The volunteer will be seated with 110º of hip and knee flexion using a digital goniometer and will be asked to breath normally.

The investigator will apply an anterior and lateral translation associated with extension, homolateral inclination and contralateral rotation of the cervical. This procedure will increase the tension of the soft tissues to reduce the remaining slack and, finally, the thrust will be applied in pure rotation. Subsequently the head of the volunteer will be repositioned in the neutral position without applying any pressure and will wait 10 seconds in this position. Finally, the previous procedure will be repeated to the opposite side.

The Qualysis Motion Capture System will measure the variation of the tridimensional movement of the abdomen through the positioning of two reflectors that will be placed in standardized points: in the umbilicus and the spinal process of L3. The volunteer will be seated with 110º of hip and knee flexion using a digital goniometer and will be asked to breath normally for 90 seconds.

This measure instrument have eight infrared cameras which after the calibration process will determine the data of the tridimensional thoracoabdominal amplitude variations of the volunteer by the kinematic of the reflex markers.

The Qualysis Motion Capture System will measure the variation of the tridimensional movement of the abdomen through the positioning of two reflectors that will be placed in standardized points: in the umbilicus and the spinal process of L3. The volunteer will be seated with 110º of hip and knee flexion using a digital goniometer and will be asked to breath normally for 90 seconds.

This measure instrument have eight infrared cameras which after the calibration process will determine the data of the tridimensional thoracoabdominal amplitude variations of the volunteer by the kinematic of the reflex markers.

The Qualysis Motion Capture System will measure the variation of the tridimensional movement of the abdomen through the positioning of two reflectors that will be placed in standardized points: in the xiphoid process of sternum and the spinal process of seventh thoracic vertebra (T7). The volunteer will be seated with 110º of hip and knee flexion using a digital goniometer and will be asked to breath normally for 90 seconds).

This measure instrument have eight infrared cameras which after the calibration process will determine the data of the tridimensional thoracoabdominal amplitude variations of the volunteer by the kinematic of the reflex markers.