Development and validation of a two-dimensional pseudorandom balance perturbation test.

ABSTRACT:

Introduction

Pseudorandom balance perturbations use unpredictable disturbances of the support surface to quantify reactive postural control. The ability to quantify postural responses to a continuous multidirectional perturbation in two orthogonal dimensions of sway (e.g., AP and ML) has yet to be investigated.

Methods

We developed a balance perturbation paradigm that used two spectrally independent sum of sinusoids signals (SoS₁, SoS₂), one for each orthogonal dimension of tilt (roll and pitch), to deliver a two-dimensional (2D) balance perturbation. In a group of 10 healthy adults we measured postural sway during 2D perturbations, as well as for each of the two individual 1D perturbation components.

Results

We found that during 2D perturbations

SUBMITTER: Wagner AR 

PROVIDER: S-EPMC11659295 | biostudies-literature | 2024

REPOSITORIES: biostudies-literature