Article

OBJECTIVE: To test the validity of wearable inertial sensors to provide objective
measures of postural stepping responses to the push and release clinical test in
people with multiple sclerosis. DESIGN: Cross-sectional study. SETTING: University medical center balance disorder laboratory. PARTICIPANTS:
Total sample
N=73; persons with multiple sclerosis (PwMS) n=52; healthy controls n=21. MAIN
OUTCOME MEASURES: Stepping latency, time and number of steps required to reach
stability, and initial step length were calculated using 3 inertial measurement
units placed on participants' lumbar spine and feet. RESULTS: Correlations
between inertial sensor measures and measures obtained from the laboratory-based
systems were moderate to strong and statistically significant for all variables:
time to release (r=.992), latency (r=.655), time to stability (r=.847), time of
first heel strike (r=.665), number of steps (r=.825), and first step length
(r=.592). Compared with healthy controls, PwMS demonstrated a longer time to
stability and required a larger number of steps to reach stability. CONCLUSIONS:
The instrumented push and release test is a valid measure of postural responses
in PwMS and could be used as a clinical outcome measures for patient care
decisions or for clinical trials aimed at improving postural control in PwMS.
CI - Copyright (c) 2016 American Congress of Rehabilitation Medicine. Published by
Elsevier Inc. All rights reserved.

Langue : ANGLAIS