The cervical spine should work as a functional unit. If hypomobility should exist in any of the segments it would limit the mobility of the spine as a whole. Although it is frequent that certain cervical segments present hypomobility, they are not always related to symptomatology. The effects of inhibition sub-occipital techniques on cervical mobility have not been evaluated.

The objetive of this trials is to assess and compare the effects on cervical mobility, of the manual technique of sub-occipital inhibition by applying pressure and self-treatment by way of Occipivot® cushion, in subjects with no cervical symptomatology but with limited mobility assessed by the flexion-rotation test.

Inclusion Criteria:

• Flexion rotation test with less than 32º or asymmetry of 10º between right and left, whenever one of the sides does not exceed physiological C1-C2 ROM (45º)
• Sing the informed consent form.

Exclusion Criteria:

• Inability to tolerate FRT
• Contraindication to manual therapy.
• Cervical treatment during the study.
• Poor language and communication skills making difficult to undertand the informed consent.