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Dynamic Stabilometry Combined With Transcranial Direct Current Stimulation for Balance and Motor Recovery After Ischemic Stroke (STAB-tDCS)

27 de octubre de 2026 actualizado por: Alexander Zakharov, Samara State Medical University

Efficacy of Combined Dynamic Stabilometry and Transcranial Electrical Stimulation in the Early Recovery Period of Ischemic Stroke in Patients With Hemiparesis: a Single-Center Randomized Study

The goal of this clinical trial is to learn if balance training on a moving (dynamic) platform with visual and sound feedback, combined with weak electrical brain stimulation, helps people recover balance and movement after an ischemic stroke with weakness on one side of the body (hemiparesis).

The main questions it aims to answer are:

  • Does the combination of dynamic platform training and active brain stimulation improve balance more than either method alone?
  • Does it improve independence in daily activities, mobility and walking, and reduce fall risk?
  • Is the combined treatment safe in the early period after stroke? Researchers will compare four groups: dynamic platform training with active stimulation, dynamic platform training with sham (imitation) stimulation, training on a locked (static) platform with active stimulation, and training on a locked platform with sham stimulation.

Participants will:

  • Receive standard rehabilitation (exercise therapy and physiotherapy) of the same volume in all groups.
  • Complete 10 sessions of 20-minute platform training over 12 days (5 sessions per week), with active or sham brain stimulation during each session.
  • Have balance, mobility and neurological tests on Day 0, Day 6 and Day 12.

Descripción general del estudio

Estado

Aún no reclutando

Condiciones

Intervención / Tratamiento

Descripción detallada

Background and Rationale. Stroke is a leading cause of long-term disability. Motor impairment, primarily hemiparesis, occurs in 60-80% of stroke survivors and limits functional independence and quality of life. The early recovery period (7-30 days after stroke onset) is characterized by enhanced neuroplasticity and is considered an optimal window for intensive rehabilitation.

Dynamic stabilometry with biofeedback is active postural control training: the patient receives real-time visual and auditory information on the position of the center of pressure while balancing on a moving platform. Unlike static stabilometry, the dynamic mode creates a controlled sensory load on the postural system and engages adaptive cerebellar-cortical mechanisms. Anodal transcranial direct current stimulation (tDCS) over the primary motor cortex (M1) increases cortical excitability and may potentiate motor learning. tDCS combined with active motor training has shown synergistic effects, but its combination with dynamic stabilometry has not been studied.

Interventions. Dynamic stabilometry is performed on the ReviStabix stabilometric trainer (Samara State Medical University; Russian medical device registration No. G004-00110-00/03075665 of August 29, 2025) in dynamic mode with visual and auditory biofeedback, at a fixed standard platform angle. In the control condition the platform is locked (static mode). tDCS is delivered with the Neurostim device (Neurosoft, Russia; registration certificate No. RZN 2021/13529 of February 20, 2021): anodal stimulation, 2 mA, electrode area 35 cm², 20 minutes; anode over M1, cathode over the supraorbital area. Stimulation starts simultaneously with the stabilometry session. Sham tDCS uses the same electrode montage; current is delivered for the first 30 seconds and then switched off automatically.

Study Design and Participant Groups. This is a prospective, single-center, pilot randomized controlled trial with a 2×2 factorial design (dynamic vs static stabilometry × active vs sham tDCS). A total of 120 patients aged 30-85 years with ischemic stroke and mild to moderate hemiparesis will be randomized 1:1:1:1 into four groups of 30: (A) dynamic stabilometry + active tDCS; (B) dynamic stabilometry + sham tDCS; (C) static stabilometry + active tDCS; (D) static stabilometry + sham tDCS. Randomization is in blocks of 8, stratified by age (<65 / ≥65 years) and side of the lesion (left / right hemisphere), with allocation concealment by sealed opaque envelopes or centralized web-based randomization. Participants are blinded to the type of stimulation (active / sham), and outcome assessors are blinded to group allocation.

What Participation Involves. All groups receive standard rehabilitation of equal volume (exercise therapy, physiotherapy), recorded in a session log. The study course consists of 10 sessions of 20 minutes over 12 days (5 sessions per week on weekdays). Assessments are performed at baseline (Day 0), Day 6 and Day 12: Berg Balance Scale (primary outcome), Functional Independence Measure, Morse Fall Scale, Hauser Ambulation Index, modified Rankin Scale, Rivermead Mobility Index, National Institutes of Health Stroke Scale, Medical Research Council muscle strength scale and Modified Ashworth Scale. Adverse events are recorded throughout the course.

Statistical Analysis. The primary analysis is ANCOVA of Day 12 BBS adjusted for baseline BBS, in the intention-to-treat population. Mixed ANOVA is used for changes across Day 0, 6 and 12, and 2×2 factorial ANOVA to test the interaction (dynamic stabilometry × tDCS). Effect sizes are expressed as Cohen's d; α = 0.05, power 80%. Sample size assumes an expected BBS difference of 6 points (SD 10, d = 0.6).

Tipo de estudio

Intervencionista

Inscripción (Estimado)

120

Fase

  • No aplica

Contactos y Ubicaciones

Esta sección proporciona los datos de contacto de quienes realizan el estudio e información sobre dónde se lleva a cabo este estudio.

Estudio Contacto

  • Nombre: Alexander Zakharov, MD
  • Número de teléfono: +79171620301
  • Correo electrónico: a.v.zaharov@samsmu.ru

Copia de seguridad de contactos de estudio

  • Nombre: Yulia Minina, MD
  • Número de teléfono: +79171195502

Ubicaciones de estudio

    • Russia
      • Samara, Russia, Rusia, 443095
        • Samara City Clinical Hospital No. 2 named after N.A. Semashko
        • Contacto:

Criterios de participación

Los investigadores buscan personas que se ajusten a una determinada descripción, denominada criterio de elegibilidad. Algunos ejemplos de estos criterios son el estado de salud general de una persona o tratamientos previos.

Criterio de elegibilidad

Edades elegibles para estudiar

30 años a 85 años (Adulto, Adulto Mayor)

Acepta Voluntarios Saludables

No

Géneros elegibles para el estudio

Todos

Descripción

Inclusion Criteria:

  • Ischemic stroke verified by neuroimaging (computed tomography or magnetic resonance imaging)
  • Mild or moderate hemiparesis
  • Time since stroke onset from 7 days to 6 months
  • Ability to stand with support for at least 30 seconds
  • Age 30 to 85 years
  • Mini-Mental State Examination (MMSE) score ≥ 20
  • Medical stability (no acute somatic complications)
  • Signed informed consent

Exclusion Criteria:

  • Hemorrhagic stroke
  • History of epilepsy or seizures
  • Intracranial metal implants or cardiac pacemaker
  • Severe aphasia preventing understanding of instructions
  • Marked vestibular dysfunction (Meniere's disease, benign paroxysmal positional vertigo in exacerbation)
  • Severe visual impairment preventing use of visual biofeedback
  • Severe lower limb spasticity (Modified Ashworth Scale ≥ 3)
  • Severe concomitant orthopedic disorders preventing verticalization
  • Unstable somatic condition (heart failure NYHA class III-IV, unstable angina, blood pressure > 180/110 mm Hg)
  • Recurrent stroke within the last 3 months
  • MMSE score < 20
  • Scalp diseases in the electrode placement areas

Plan de estudios

Esta sección proporciona detalles del plan de estudio, incluido cómo está diseñado el estudio y qué mide el estudio.

¿Cómo está diseñado el estudio?

Detalles de diseño

  • Propósito principal: Tratamiento
  • Asignación: Aleatorizado
  • Modelo Intervencionista: Asignación factorial
  • Enmascaramiento: Doble

Armas e Intervenciones

Grupo de participantes/brazo
Intervención / Tratamiento
Experimental: Experimental Arm A: Dynamic stabilometry + Active tDCS

Standard rehabilitation plus dynamic stabilometry with visual and auditory biofeedback (20 min) synchronized with active anodal tDCS over M1 (2 mA, 20 min); 10 sessions, 5 times/week, over 12 days.

Active balance training on a stabilometric platform in dynamic mode with real-time visual and auditory feedback on the center of pressure; fixed standard platform angle; 20-min sessions.

Anodal transcranial direct current stimulation, 2 mA, electrode area 35 cm², 20 min; anode over M1, cathode over the supraorbital area; starts simultaneously with the stabilometry session.

Exercise therapy and physiotherapy of equal volume in all groups, recorded in a session log.

Comparador activo: Control Arm B: Dynamic stabilometry + Sham tDCS

Standard rehabilitation plus dynamic stabilometry with biofeedback (20 min) with sham tDCS (current for the first 30 s only); 10 sessions, 5 times/week, over 12 days.

Active balance training on a stabilometric platform in dynamic mode with real-time visual and auditory feedback on the center of pressure; fixed standard platform angle; 20-min sessions.

Exercise therapy and physiotherapy of equal volume in all groups, recorded in a session log.

Same electrode montage as active tDCS; current delivered for the first 30 s to mimic skin sensations, then switched off automatically.

Comparador activo: Control Arm C: Static stabilometry + Active tDCS

Standard rehabilitation plus training on the locked (static) platform (20 min) synchronized with active anodal tDCS over M1 (2 mA, 20 min); 10 sessions, 5 times/week, over 12 days.

Anodal transcranial direct current stimulation, 2 mA, electrode area 35 cm², 20 min; anode over M1, cathode over the supraorbital area; starts simultaneously with the stabilometry session.

Exercise therapy and physiotherapy of equal volume in all groups, recorded in a session log.

Training on the same stabilometric platform with the platform locked (static mode), same session duration; controls for the dynamic platform component.

Comparador falso: Control Arm D: Static stabilometry + Sham tDCS

Standard rehabilitation plus training on the locked (static) platform (20 min) with sham tDCS; 10 sessions, 5 times/week, over 12 days.

Exercise therapy and physiotherapy of equal volume in all groups, recorded in a session log.

Same electrode montage as active tDCS; current delivered for the first 30 s to mimic skin sensations, then switched off automatically.

Training on the same stabilometric platform with the platform locked (static mode), same session duration; controls for the dynamic platform component.

¿Qué mide el estudio?

Medidas de resultado primarias

Medida de resultado
Medida Descripción
Periodo de tiempo
Change from Baseline in Berg Balance Scale (BBS)
Periodo de tiempo: Baseline (Day 0) and Day 12

The BBS assesses static and dynamic balance with 14 items; total score ranges from 0 to 56, where higher scores indicate better balance.

Baseline (Day 0) and Day 12

Medidas de resultado secundarias

Medida de resultado
Medida Descripción
Periodo de tiempo
Change from Baseline in Berg Balance Scale (BBS) at Day 6
Periodo de tiempo: Baseline (Day 0) and Day 6

Interim BBS assessment; range 0 to 56, where higher scores indicate better balance.

Baseline (Day 0) and Day 6
Change from Baseline in Functional Independence Measure (FIM)
Periodo de tiempo: Day 0, Day 6, Day 12

The FIM assesses the level of assistance needed in daily activities (motor and cognitive domains); total score ranges from 18 to 126, where higher scores indicate greater independence.

Day 0, Day 6, Day 12
Change from Baseline in Morse Fall Scale (MFS)
Periodo de tiempo: Day 0, Day 6, Day 12

The MFS estimates fall risk from six items; score ranges from 0 to 125, where higher scores indicate higher fall risk.

Day 0, Day 6, Day 12
Change from Baseline in Hauser Ambulation Index (HAI)
Periodo de tiempo: Day 0, Day 6, Day 12

The HAI rates walking ability from 0 (fully active) to 9 (restricted to wheelchair, unable to transfer), where higher scores indicate worse mobility.

Day 0, Day 6, Day 12
Change from Baseline in modified Rankin Scale (mRS)
Periodo de tiempo: Day 0, Day 6, Day 12

The mRS measures global disability and dependence; range 0 (no symptoms) to 6 (death), where higher scores indicate greater disability.

Day 0, Day 6, Day 12
Change from Baseline in Rivermead Mobility Index (RMI)
Periodo de tiempo: Day 0, Day 6, Day 12

The RMI assesses functional mobility with 15 items from turning in bed to running; range 0 to 15, where higher scores indicate better mobility.

Day 0, Day 6, Day 12
Change from Baseline in National Institutes of Health Stroke Scale (NIHSS)
Periodo de tiempo: Day 0, Day 6, Day 12

The NIHSS quantifies stroke-related neurological deficit; range 0 to 42, where higher scores indicate more severe deficit.

Day 0, Day 6, Day 12
Change from Baseline in Medical Research Council (MRC) Muscle Strength Score
Periodo de tiempo: Day 0, Day 6, Day 12

Muscle strength of the paretic limbs graded per muscle group from 0 (no contraction) to 5 (normal strength), where higher scores indicate greater strength.

Day 0, Day 6, Day 12
Change from Baseline in Modified Ashworth Scale (MAS)
Periodo de tiempo: Day 0, Day 6, Day 12

The MAS measures resistance to passive movement (spasticity) from 0 to 4, where higher scores indicate more severe spasticity.

Day 0, Day 6, Day 12
Number of Participants With Adverse Events
Periodo de tiempo: Day 0 through Day 12

Adverse events related to stabilometry or tDCS (e.g., skin irritation, headache, dizziness, falls, seizures), recorded at each session.

Day 0 through Day 12

Colaboradores e Investigadores

Aquí es donde encontrará personas y organizaciones involucradas en este estudio.

Patrocinador

Fechas de registro del estudio

Estas fechas rastrean el progreso del registro del estudio y los envíos de resultados resumidos a ClinicalTrials.gov. Los registros del estudio y los resultados informados son revisados ​​por la Biblioteca Nacional de Medicina (NLM) para asegurarse de que cumplan con los estándares de control de calidad específicos antes de publicarlos en el sitio web público.

Fechas importantes del estudio

Inicio del estudio (Estimado)

28 de octubre de 2026

Finalización primaria (Estimado)

28 de diciembre de 2026

Finalización del estudio (Estimado)

28 de diciembre de 2026

Fechas de registro del estudio

Enviado por primera vez

27 de octubre de 2026

Primero enviado que cumplió con los criterios de control de calidad

27 de octubre de 2026

Publicado por primera vez (Actual)

3 de noviembre de 2026

Actualizaciones de registros de estudio

Última actualización publicada (Actual)

3 de noviembre de 2026

Última actualización enviada que cumplió con los criterios de control de calidad

27 de octubre de 2026

Última verificación

1 de octubre de 2026

Más información

Términos relacionados con este estudio

Plan de datos de participantes individuales (IPD)

¿Planea compartir datos de participantes individuales (IPD)?

SÍ

Descripción del plan IPD

Anonymized individual participant data underlying the published results (baseline characteristics and outcome scores).

Marco de tiempo para compartir IPD

Beginning at publication of the main results, available for 5 years

Criterios de acceso compartido de IPD

Available as supporting information with the journal article; other requests to the Principal Investigator with a methodologically sound proposal

Tipo de información de apoyo para compartir IPD

  • PROTOCOLO DE ESTUDIO
  • SAVIA

Información sobre medicamentos y dispositivos, documentos del estudio

Estudia un producto farmacéutico regulado por la FDA de EE. UU.

No

Estudia un producto de dispositivo regulado por la FDA de EE. UU.

No

Esta información se obtuvo directamente del sitio web clinicaltrials.gov sin cambios. Si tiene alguna solicitud para cambiar, eliminar o actualizar los detalles de su estudio, comuníquese con register@clinicaltrials.gov. Tan pronto como se implemente un cambio en clinicaltrials.gov, también se actualizará automáticamente en nuestro sitio web. .