Cervical Spine Manipulation Affects on Balance and Proprioception
Cervical spine manipulation (CSM) is utilized by many health care practitioners in the management of patients with neck pain and headache. How CSM works is not understood however, most researchers agree that there is likely a combination of mechanical, neurophysiological and placebo effects. This study will test for possible neurophysiological effects by examining for changes in a person's ability to reposition their head and neck in space, and maintain their balance following CSM.
|Study Design:||Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: Double Blind (Subject, Outcomes Assessor)
Primary Purpose: Basic Science
|Official Title:||Immediate Effects of Cervical Spine Manipulation on Balance and Joint Proprioception in Healthy Individuals|
- Cervical joint proprioception [ Time Frame: 1 day (Immediately after the intervention) ] [ Designated as safety issue: No ]Subjects wear a headband with a mounted laser pointer and sit 1 meter away from a wall. They assume their comfortable neutral cervical posture and then close their eyes and extend their cervical spine and return to their neutral posture with eyes closed. The laser pointer marks the point of return and we measure the difference between start and end points for error.
- SMART Neurocom Balance Master [ Time Frame: 1 day (Immediately after the intervention) ] [ Designated as safety issue: No ]Subjects stand on a force plate on a SMART Neurocom Balance Master and complete a Sensory Organization Test (SOT) program which assesses somatosensory, visual and vestobular systems used in maintaining balance.
|Study Start Date:||April 2011|
|Estimated Study Completion Date:||March 2013|
|Estimated Primary Completion Date:||March 2013 (Final data collection date for primary outcome measure)|
Experimental: Cervical Spine Manipulation
Subjects will lie supine on a treatment table and receive a high velocity low amplitude thrust joint manipulation to their cervical spine in rotation to each side of the neck.
|Other: Cervical Spine Manipulation|
Sham Comparator: Manual Contact
Subjects will lie supine on a treatment table and have their suboccipital region gently cupped by the therapist for 30 seconds. No movement or force will be applied, just simple manual contact.
|Other: Manual Contact|
Consenting participants will have their proprioception tested through a joint repositioning error test for their cervical spine, and also have their balance tested through a Neurocom Balancemaster. Following these pre-intervention measures, they will receive in a random order, either a cervical spine manipulation (CSM) or a sham manipulation, and then have tests repeated to analyze for changes and differences between interventions.