Cervical Multifidus Muscle Function

The purpose of this study is to determine the relationship between cervical multifidi thickness, cervical spine proprioception and possible reflex activation of cervical multifidi through stimulation of joint mechanoreceptors. Cervical mechanoreceptors will be activated with an innocuous, nonspecific stimulation. Participants will have cervical spine proprioception assessed through joint position sense testing. The multifidus muscle thickness and activation state is to be assessed by sonography. These measures are done pre & post to the innocuous stimulation. There is no specific hypothesis.

Inclusion Criteria:

• Logan student, staff, or faculty, ages 18 - 30 years

Exclusion Criteria:

• Fractures
• Tumors
• Dislocations
• Myopathies
• Signs and/or symptoms of neuromotor disorders
• Consumption of prescription drugs that affect the nervous system
• Recent cervical spine injuries or surgeries
• Pain
• Manipulative therapy within the preceding 7 days
• Neck pain