The Head Shake Sensory Organization Test (HS-SOT): Normative Data and Correlation with Dynamic Visual Acuity Testing
Background: Among healthy (asymptomatic) subjects and patients, the relationship between performance on the Head Shake Sensory Organization Test (HS-SOT) and performance on the Dynamic Visual Acuity (DVA) testing has not been reported. The purpose of this study was to establish normative data for the HS-SOT and compare performance on the HS-SOT and the DVA test. Hypothesis: A strong positive correlation would exist between the DVA and the HS-SOT. Study Design: A cross-sectional design was used. Level of Evidence: Level 3. Methods: Sixty asymptomatic subjects (34 females, 26 males, ages 20 to 26 years, 23.7±1.6) participated. Each subject’s dynamic balance and visual acuity were assessed using the HS-SOT and DVA testing on the NeuroCom Balance System per manufacturer’s protocol. Results: Equilibrium scores for the HS-SOT condition 2 (eyes closed, fixed surface) = 93.23±1.99, 95% CI = 92.7-93.8; and condition 5 (eyes closed, sway-referenced surface) = 66.69±1.13, 95% CI=64.4-70.0. The equilibrium score ratio (ESR) for condition 2 = 1.01±.003 (δ2=.001), and condition 5 = .94±.03 (δ2=.055). ESR fixed surface was negatively correlated with DVA loss symmetry % [R= - .36, p=.004, R2=.13] and with DVA errors (right) [R=-.30, p=.02, R2=.09]. Conclusion: Subjects demonstrated good dynamic postural stability on the HS-SOT and had minimal loss in their ability to maintain visual acuity during head movements. Clinical Relevance: Clinically derived HS-SOT data can be compared to normative data to assist the clinician with accurate assessment of postural instability.
Cripps, Andrea E. and Livingston, Scott C.
"The Head Shake Sensory Organization Test (HS-SOT): Normative Data and Correlation with Dynamic Visual Acuity Testing,"
Journal of Sports Medicine and Allied Health Sciences: Official Journal of the Ohio Athletic Trainers Association: Vol. 3:
2, Article 3.
Available at: https://scholarworks.bgsu.edu/jsmahs/vol3/iss2/3
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