&lt;b&gt;Static and dynamic impairment following stroke reflecting hemispheric asymmetry for postural control

Suellen Marinho Andrade,Bernardino Fernandéz-Calvo

doi:10.4025/actascihealthsci.v37i2.25414

<b>Static and dynamic impairment following stroke reflecting hemispheric asymmetry for postural control

Suellen Marinho Andrade, Bernardino Fernandéz-Calvo

Open Access

https://doi.org/10.4025/actascihealthsci.v37i2.25414

Copy DOI

Abstract

This paper evaluates whether there is a relationship between postural control and hemispheric asymmetry following a stroke. Twenty right or left brain-damage patients and ten healthy control subjects were included in this study. The static (weight symmetry) and dynamic posture (velocity, maximal excursion and the directional control of the center of mass) were analyzed by quantitative posturography. Factors such as clinical neurological assessment, postural skills, muscle strength, spasticity, sensitivity and hemineglect were also collected. Results showed that in static posture, right-brain-damaged patients had worse performance. In the dynamic tests, left-brain-damaged patients were selectively impaired on maximal excursion and the directional control of the center of mass, while right-brain-damaged patients were more impaired on movement velocity. The results show specific mechanisms for modulating posture depending on the damaged side. These findings support the idea that each hemisphere contributes differently to static and dynamic postural control.

Highlights

Postural disorders represent a common impairment after a stroke, with a substantial impact on the functional capacities and on the independence of daily tasks of survivors (KISSELA et al, 2009)
Other studies indicate that the right hemisphere is more specialized in controlling the mechanisms linked to posture, such as trunk movement and weight-bearing over the lower limbs (SPINAZZOLA et al, 2003), and still other studies have not found a relationship between the lesion side and the adopted posture after a stroke (YAVUZER et al, 2001)
The groups were split into patients who suffered stroke in the right hemisphere (RH), and left hemisphere (LH), compared to healthy control individuals (CG), and all of them were paired by sex and age

Summary

Introduction

Postural disorders represent a common impairment after a stroke, with a substantial impact on the functional capacities and on the independence of daily tasks of survivors (KISSELA et al, 2009). There is an asymmetric weight bearing over the affected or unaffected lower limbs (MARTINS et al, 2011; ROUGIER; GENTHON, 2009). Studies that investigate the relationship between postural control and hemispheric specialization present conflicting results. Health Sciences postural control (ROUGIER; GENTHON, 2009). Other studies indicate that the right hemisphere is more specialized in controlling the mechanisms linked to posture, such as trunk movement and weight-bearing over the lower limbs (SPINAZZOLA et al, 2003), and still other studies have not found a relationship between the lesion side and the adopted posture after a stroke (YAVUZER et al, 2001). Some studies involving lower limbs state that the planning and motor control employ

Objectives

Results

Discussion

Conclusion