A feasibility study on the use of cranial nerve non-invasive neuromodulation to improve affected arm function in people in the chronic stage of a stroke

Abstract Background Chronic stroke survivors are often left with residual arm muscle weakness impeding arm function, daily life activities and quality of life. Exercise is one of the main post-stroke interventions to improve arm function, with cranial nerve non-invasive neuromodulation (CN-NINM) eme...

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Main Authors: Maureen Ahiatsi, Guillaume Léonard, Eléonor Riesco, Marie-Claude Girard, Marie-Hélène Milot
Format: Article
Language:English
Published: BMC 2025-05-01
Series:BMC Neurology
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Online Access:https://doi.org/10.1186/s12883-025-04213-5
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author Maureen Ahiatsi
Guillaume Léonard
Eléonor Riesco
Marie-Claude Girard
Marie-Hélène Milot
author_facet Maureen Ahiatsi
Guillaume Léonard
Eléonor Riesco
Marie-Claude Girard
Marie-Hélène Milot
author_sort Maureen Ahiatsi
collection DOAJ
description Abstract Background Chronic stroke survivors are often left with residual arm muscle weakness impeding arm function, daily life activities and quality of life. Exercise is one of the main post-stroke interventions to improve arm function, with cranial nerve non-invasive neuromodulation (CN-NINM) emerging as a potentially interesting complementary therapy to enhance its benefits. Only one study has evaluated the impact of CN-NINM combined with a lower-limb training program on improved balance in subacute stroke survivors. The aim of this study was to assess the feasibility and explore the effects on motor function of an arm strengthening program combined with CN-NINM in chronic stroke survivors (> 6 months). Methods Twelve (12) participants (69 ± 11 years) took part in this feasibility study. Recruitment and drop-out rates, number of people who elected not to participate, adherence and adverse events were collected to assess feasibility. The effects of CN-NINM + exercise on motor function were evaluated by changes in arm motor function, measured using the Fugl-Meyer Assessment (FMA), and functional performance, evaluated through the Wolf Motor Function Test (WMFT), following a 4-week arm strengthening program (60 min, 3 sessions/week) combined with CN-NINM (tongue stimulation, 20 min at a comfortable intensity). Descriptive and non-parametric statistics (Wilcoxon signed-ranks test) were used to describe feasibility data and explore CN-NINM effects. Results Feasibility was confirmed with a recruitment rate of 1.3 person/month, no dropout, a 100% adherence rate, and no serious adverse events. A significant gain in FMA (p = 0.003) with a trend for WMFT (P = 0.11) were noted post-intervention. Conclusion This study suggests that CN-NINM combined with an arm strengthening program is feasible and may improve arm function in chronic stroke survivors. Further research is needed to validate the results. Trial registration This clinical trial was registered on ClinicalTrials.gov (NCT05370274) on April 27, 2022.
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spelling doaj-art-e7aef27c83b64152a92476dc521b14812025-08-20T01:51:28ZengBMCBMC Neurology1471-23772025-05-012511910.1186/s12883-025-04213-5A feasibility study on the use of cranial nerve non-invasive neuromodulation to improve affected arm function in people in the chronic stage of a strokeMaureen Ahiatsi0Guillaume Léonard1Eléonor Riesco2Marie-Claude Girard3Marie-Hélène Milot4Research Centre on Aging, Centre intégré universitaire de santé et de services sociaux de l’Estrie – Centre hospitalier universitaire de Sherbrooke (CIUSSS de l’Estrie - CHUS)Research Centre on Aging, Centre intégré universitaire de santé et de services sociaux de l’Estrie – Centre hospitalier universitaire de Sherbrooke (CIUSSS de l’Estrie - CHUS)Research Centre on Aging, Centre intégré universitaire de santé et de services sociaux de l’Estrie – Centre hospitalier universitaire de Sherbrooke (CIUSSS de l’Estrie - CHUS)Research Centre on Aging, Centre intégré universitaire de santé et de services sociaux de l’Estrie – Centre hospitalier universitaire de Sherbrooke (CIUSSS de l’Estrie - CHUS)Research Centre on Aging, Centre intégré universitaire de santé et de services sociaux de l’Estrie – Centre hospitalier universitaire de Sherbrooke (CIUSSS de l’Estrie - CHUS)Abstract Background Chronic stroke survivors are often left with residual arm muscle weakness impeding arm function, daily life activities and quality of life. Exercise is one of the main post-stroke interventions to improve arm function, with cranial nerve non-invasive neuromodulation (CN-NINM) emerging as a potentially interesting complementary therapy to enhance its benefits. Only one study has evaluated the impact of CN-NINM combined with a lower-limb training program on improved balance in subacute stroke survivors. The aim of this study was to assess the feasibility and explore the effects on motor function of an arm strengthening program combined with CN-NINM in chronic stroke survivors (> 6 months). Methods Twelve (12) participants (69 ± 11 years) took part in this feasibility study. Recruitment and drop-out rates, number of people who elected not to participate, adherence and adverse events were collected to assess feasibility. The effects of CN-NINM + exercise on motor function were evaluated by changes in arm motor function, measured using the Fugl-Meyer Assessment (FMA), and functional performance, evaluated through the Wolf Motor Function Test (WMFT), following a 4-week arm strengthening program (60 min, 3 sessions/week) combined with CN-NINM (tongue stimulation, 20 min at a comfortable intensity). Descriptive and non-parametric statistics (Wilcoxon signed-ranks test) were used to describe feasibility data and explore CN-NINM effects. Results Feasibility was confirmed with a recruitment rate of 1.3 person/month, no dropout, a 100% adherence rate, and no serious adverse events. A significant gain in FMA (p = 0.003) with a trend for WMFT (P = 0.11) were noted post-intervention. Conclusion This study suggests that CN-NINM combined with an arm strengthening program is feasible and may improve arm function in chronic stroke survivors. Further research is needed to validate the results. Trial registration This clinical trial was registered on ClinicalTrials.gov (NCT05370274) on April 27, 2022.https://doi.org/10.1186/s12883-025-04213-5StrokeMotor functionUpper limbStrength training programCranial nerve non-invasive neuromodulation
spellingShingle Maureen Ahiatsi
Guillaume Léonard
Eléonor Riesco
Marie-Claude Girard
Marie-Hélène Milot
A feasibility study on the use of cranial nerve non-invasive neuromodulation to improve affected arm function in people in the chronic stage of a stroke
BMC Neurology
Stroke
Motor function
Upper limb
Strength training program
Cranial nerve non-invasive neuromodulation
title A feasibility study on the use of cranial nerve non-invasive neuromodulation to improve affected arm function in people in the chronic stage of a stroke
title_full A feasibility study on the use of cranial nerve non-invasive neuromodulation to improve affected arm function in people in the chronic stage of a stroke
title_fullStr A feasibility study on the use of cranial nerve non-invasive neuromodulation to improve affected arm function in people in the chronic stage of a stroke
title_full_unstemmed A feasibility study on the use of cranial nerve non-invasive neuromodulation to improve affected arm function in people in the chronic stage of a stroke
title_short A feasibility study on the use of cranial nerve non-invasive neuromodulation to improve affected arm function in people in the chronic stage of a stroke
title_sort feasibility study on the use of cranial nerve non invasive neuromodulation to improve affected arm function in people in the chronic stage of a stroke
topic Stroke
Motor function
Upper limb
Strength training program
Cranial nerve non-invasive neuromodulation
url https://doi.org/10.1186/s12883-025-04213-5
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