 Seventy four subjects will be randomized computer application into three groups: Mobilization Group, Maintained pressure Group and Control Group. All the three groups receive the same protocolized physiotherapeutic treatment during three weeks and, additionally, the Mobilization Group receives six sessions two sessions in a week during three weeks of translational dorsal glide mobilization technique grade III of the atlanto-occipital joint and the Maintained pressure Group receives six sessions two sessions in a week during three weeks of pressure maintained suboccipital Inhibition technique. The Control Group receives the protocolized physiotherapeutic treatment only. 