This study investigates the effect of two different techniques (deep dry needling and superficial dry needling) on the latent myofascial trigger point in the upper trapezius. Subjects with latent Myofascial trigger point in this location of the muscle will be identified and will be randomly assigned to one out of the three groups: deep dry needling, superficial dry needling or sham dry needling in gastrocnemius muscle. cervical range of motion and pain pressure threshold in the upper trapezius will be registered before, immediately after the intervention, at 24 hours after the intervention, at 72 hours after the intervention and a week after the intervention

Inclusion Criteria:

• Present the latent Myofascial trigger Point (MTP) 1 in upper trapezius.
• Accept participation in the study (signature of informed consent).
• Be in an age range between 18 and 55 years.
• Do not present any exclusion criteria.

Exclusion Criteria:

• Do not present MTP 1 latent in the upper trapezius.
• Suffering and / or having suffered from upper limb pathologies, deformities or orthopedic injuries that could alter the static and biomechanics of the shoulder and neck.
• Not clearly identify the MTP 1 in the upper trapezius.
• Have been diagnosed with fibromyalgia, myelopathy or radiculopathy.
• Having contraindicated the technique of dry needling for suffering, for example, coagulation problems.
• Having suffered a whiplash.
• Be pregnant.
• Have used analgesics 24 hours before participating in the study.
• Having belonephobia.
• Know the study techniques.
• Be in physiotherapy treatment and / or have been treated with needle techniques at some time.
• Having had cervical surgery.

Double (participant, outcomes Assessor