FROM: Journal of Chiropractic Medicine 2009 (Dec); 8 (4): 156–164
Richard G. Strunk, DC, Cheryl Hawk, DC, PhD
Cleveland Chiropractic College,
Overland Park, KS.
OBJECTIVE: This feasibility study was conducted to further the development of a line of investigation into the potential effects of spinal manipulation/manual therapy on, balance, cervicogenic dizziness, and neck pain in adults.
METHODS: A single-group, preexperimental, feasibility study was conducted at a chiropractic college health center and a senior fitness center with a target sample size of 20 patients (40 years or older). Patients were treated by either a clinician or a chiropractic student intern for 8 weeks. The Dizziness Handicap Inventory was the primary outcome measurement, with the Short Form Berg Balance Scale (SF-BBS) and the Neck Disability Index used as secondary outcome measurements.
RESULTS: Twenty-seven patients were recruited over a period of 13 months. Twenty-one patients enrolled in the study; but because of 2 dropouts, 19 patients completed the treatment. A median Dizziness Handicap Inventory change score of +7 points was calculated for those dizziness patients, with 3 patients improving by at least 18 points, indicating a clinically meaningful change. Seven of the 15 patients who performed the SF-BBS attained at least a 4-point improvement with an effect size of 1.2. A median Neck Disability Index change score of +1 was calculated for those patients with neck pain. Twelve minor adverse reactions were reported by 8 patients, with 3 of those reactions lasting longer than 24 hours.
CONCLUSION: A large effect size was calculated for the SF-BBS. Most patients demonstrated improved balance, and some showed reduced dizziness and neck pain.