Comparison of forward and backward postural perturbations in mild-to-moderate Parkinson's disease.

ABSTRACT:

Background

Assessing postural stability in Parkinson's disease (PD) often relies on measuring the stepping response to an imposed postural perturbation. The standard clinical technique relies on a brisk backwards pull at the shoulders by the examiner and judgement by a trained rater. In research settings, various quantitative measures and perturbation directions have been tested, but it is unclear which metrics and perturbation direction differ most between people with PD and controls.

Objectives

(1) Use standardized forward vs. backward perturbations of a support surface to evaluate reactive stepping performance between PD and control participants. (2) Evaluate the utility of using principal components analysis to capture the dynamics of the reactive response and difference

SUBMITTER: Lu C 

PROVIDER: S-EPMC7902457 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature