Date of Award


Degree Type

Selective Evidence-Based Medicine Review

Degree Name

Master of Science in Health Sciences - Physician Assistant

Department Chair

John Cavenagh, PhD, PA-C


OJECTIVE: The objective of this selective EBM review is to determine whether or not vibration training increases stability in functionally unstable ankles.

STUDY DESIGN: Review of three English language randomized control trials (RCTs) published in 2006, 2008 and 2010.

DATA SOURCES: Three non-blind randomized control trials found via PubMed.

OUTCOMES MEASURED: Efficacy was measured with one (experimental) group receiving vibration training and the other (control) group using either non-vibration exercise techniques or no exercise. Increased stability was measured with electromyography (EMG), balance testing or an isokinetic dynamometer.

RESULTS: Vibration training is a useful tool to increase the stability in functionally unstable ankles; however, it needs further research to determine its efficacy compared to conventional modes of rehabilitation. One randomized control trial demonstrated that after the experimental period (four weeks), there was no significant increase in stability and therefore renders vibration training ineffective.

CONCLUSIONS: Overall, vibration training alone is not yet a useful tool for the rehabilitation of functionally unstable ankles.