@article{ref1,
title="Dizziness handicap inventory score is highly correlated with markers of gait disturbance",
journal="Otology and neurotology",
year="2017",
author="Zanotto, Damiano and Mamuyac, Erin M. and Chambers, Adam R. and Nemer, John S. and Stafford, John A. and Agrawal, Sunil K. and Lalwani, Anil K.",
volume="38",
number="10",
pages="1490-1499",
abstract="OBJECTIVE: To evaluate the association between Dizziness Handicap Inventory-Screening version (DHI-S) score and spatiotemporal gait parameters using SoleSound, a newly developed, inexpensive, portable footwear-based gait analysis system. STUDY DESIGN: Cross-sectional. PATIENTS: One hundred eighteen patients recruited from otology clinic. INTERVENTION(S): Subjects completed the DHI-S survey and four uninterrupted walking laps wearing SoleSound instrumented footwear on a hard, flat surface for 100 m. MAIN OUTCOME MEASURE(S): For each subject, mean and coefficient of variation (CV) of stride length, cadence, walking speed, foot-ground clearance, double-support time, swing period, and stance-to-swing were computed by considering 40 strides of steady-state walking within each lap. Linear regression models were employed to study correlations between these variables and DHI-S scores after adjusting for age, sex, and race/ethnicity. <br><br>RESULTS: Patients with higher DHI-S score took shorter steps and less steps per minute (-0.017 m and -1.1 steps/min per every four-point increase in DHI-S score, p < 0.05) than patients with a lower DHI-S score, with slower walking speed (-0.025 m/s per every four-point increase in DHI-S score, p < 0.01). Additionally, patients with higher DHI-S scores showed larger variability in all analyzed temporal parameters (+0.1% for CV of cadence, +0.5% for CV of double support period, +0.2% for CV of swing period, and +0.4% for CV of stance-to-swing, per every four-point increase in DHI-S score, p < 0.01). <br><br>CONCLUSION: SoleSound was effective in measuring a wide range of gait parameters. Patients' self-perception of vestibular handicap, as assessed with DHI-S, is associated with deterioration in measurable gait parameters independent of age.<p /> <p>Language: en</p>",
language="en",
issn="1531-7129",
doi="10.1097/MAO.0000000000001586",
url="http://dx.doi.org/10.1097/MAO.0000000000001586"
}