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Effects of continuous visual feedback during sitting balance training in chronic stroke survivors

BACKGROUND: Postural control deficits are common in stroke survivors and often the rehabilitation programs include balance training based on visual feedback to improve the control of body position or of the voluntary shift of body weight in space. In the present work, a group of chronic stroke survi...

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Autores principales: Pellegrino, Laura, Giannoni, Psiche, Marinelli, Lucio, Casadio, Maura
Formato: Online Artículo Texto
Lenguaje:English
Publicado: BioMed Central 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5644142/
https://www.ncbi.nlm.nih.gov/pubmed/29037206
http://dx.doi.org/10.1186/s12984-017-0316-0
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author Pellegrino, Laura
Giannoni, Psiche
Marinelli, Lucio
Casadio, Maura
author_facet Pellegrino, Laura
Giannoni, Psiche
Marinelli, Lucio
Casadio, Maura
author_sort Pellegrino, Laura
collection PubMed
description BACKGROUND: Postural control deficits are common in stroke survivors and often the rehabilitation programs include balance training based on visual feedback to improve the control of body position or of the voluntary shift of body weight in space. In the present work, a group of chronic stroke survivors, while sitting on a force plate, exercised the ability to control their Center of Pressure with a training based on continuous visual feedback. The goal of this study was to test if and to what extent chronic stroke survivors were able to learn the task and transfer the learned ability to a condition without visual feedback and to directions and displacement amplitudes different from those experienced during training. METHODS: Eleven chronic stroke survivors (5 Male - 6 Female, age: 59.72 ± 12.84 years) participated in this study. Subjects were seated on a stool positioned on top of a custom-built force platform. Their Center of Pressure positions were mapped to the coordinate of a cursor on a computer monitor. During training, the cursor position was always displayed and the subjects were to reach targets by shifting their Center of Pressure by moving their trunk. Pre and post-training subjects were required to reach without visual feedback of the cursor the training targets as well as other targets positioned in different directions and displacement amplitudes. RESULTS: During training, most stroke survivors were able to perform the required task and to improve their performance in terms of duration, smoothness, and movement extent, although not in terms of movement direction. However, when we removed the visual feedback, most of them had no improvement with respect to their pre-training performance. CONCLUSIONS: This study suggests that postural training based exclusively on continuous visual feedback can provide limited benefits for stroke survivors, if administered alone. However, the positive gains observed during training justify the integration of this technology-based protocol in a well-structured and personalized physiotherapy training, where the combination of the two approaches may lead to functional recovery.
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spelling pubmed-56441422017-10-26 Effects of continuous visual feedback during sitting balance training in chronic stroke survivors Pellegrino, Laura Giannoni, Psiche Marinelli, Lucio Casadio, Maura J Neuroeng Rehabil Research BACKGROUND: Postural control deficits are common in stroke survivors and often the rehabilitation programs include balance training based on visual feedback to improve the control of body position or of the voluntary shift of body weight in space. In the present work, a group of chronic stroke survivors, while sitting on a force plate, exercised the ability to control their Center of Pressure with a training based on continuous visual feedback. The goal of this study was to test if and to what extent chronic stroke survivors were able to learn the task and transfer the learned ability to a condition without visual feedback and to directions and displacement amplitudes different from those experienced during training. METHODS: Eleven chronic stroke survivors (5 Male - 6 Female, age: 59.72 ± 12.84 years) participated in this study. Subjects were seated on a stool positioned on top of a custom-built force platform. Their Center of Pressure positions were mapped to the coordinate of a cursor on a computer monitor. During training, the cursor position was always displayed and the subjects were to reach targets by shifting their Center of Pressure by moving their trunk. Pre and post-training subjects were required to reach without visual feedback of the cursor the training targets as well as other targets positioned in different directions and displacement amplitudes. RESULTS: During training, most stroke survivors were able to perform the required task and to improve their performance in terms of duration, smoothness, and movement extent, although not in terms of movement direction. However, when we removed the visual feedback, most of them had no improvement with respect to their pre-training performance. CONCLUSIONS: This study suggests that postural training based exclusively on continuous visual feedback can provide limited benefits for stroke survivors, if administered alone. However, the positive gains observed during training justify the integration of this technology-based protocol in a well-structured and personalized physiotherapy training, where the combination of the two approaches may lead to functional recovery. BioMed Central 2017-10-16 /pmc/articles/PMC5644142/ /pubmed/29037206 http://dx.doi.org/10.1186/s12984-017-0316-0 Text en © The Author(s). 2017 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.
spellingShingle Research
Pellegrino, Laura
Giannoni, Psiche
Marinelli, Lucio
Casadio, Maura
Effects of continuous visual feedback during sitting balance training in chronic stroke survivors
title Effects of continuous visual feedback during sitting balance training in chronic stroke survivors
title_full Effects of continuous visual feedback during sitting balance training in chronic stroke survivors
title_fullStr Effects of continuous visual feedback during sitting balance training in chronic stroke survivors
title_full_unstemmed Effects of continuous visual feedback during sitting balance training in chronic stroke survivors
title_short Effects of continuous visual feedback during sitting balance training in chronic stroke survivors
title_sort effects of continuous visual feedback during sitting balance training in chronic stroke survivors
topic Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5644142/
https://www.ncbi.nlm.nih.gov/pubmed/29037206
http://dx.doi.org/10.1186/s12984-017-0316-0
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