Article

OBJECTIVE: To understand and examine the relation between postural response
latencies obtained during postural perturbations and representative measures of
balance during standing (sway variables) and walking (trunk motion).
DESIGN: Cross-sectional.
SETTING: University medical center. PARTICIPANTS: Persons with
multiple sclerosis (MS) (n=40) were compared with similar aged control subjects
(n=20). There were 20 subjects with MS in the normal walking velocity group and
20 subjects with MS who had slow walking velocity based on a timed 25-foot walk
(T25FW) of <5 seconds. INTERVENTIONS: None. MAIN OUTCOME MEASURES: Postural
response latency, sway variables, trunk motion variables. RESULTS: We found that
subjects with MS with both slow or normal walking velocities had significantly
longer postural response latencies than the healthy control group. Postural
response latency was not correlated with the T25FW. Postural response latency was
significantly correlated with center of pressure sway variables during quiet
standing (root mean square: rho=.334, P=.04; range: rho=.385, P=.017; mean
velocity: rho=.337, P=.038; total sway area: rho=.393, P=.015). Postural response
latency was also significantly correlated with motion of the trunk during walking
(sagittal plane range of motion: rho=.316, P=.05; SD of transverse plane range of
motion: rho=-.43, P=.006). CONCLUSIONS: These findings clearly indicate that slow
postural responses to external perturbations in patients with MS contribute to
disturbances in balance control during both standing and walking.
CI - Copyright (c) 2014 American Congress of Rehabilitation Medicine. Published by
Elsevier Inc. All rights reserved.
- SEP

Langue : ANGLAIS