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Combined Neural and Behavioral Therapies to Enhance Stroke Recovery

12 juli 2017 bijgewerkt door: VA Office of Research and Development

Combining Neural and Behavioral Therapies to Enhance Stroke Recovery

Stroke is the leading cause of long-term disability in this country with more than 1 million Americans reporting difficulty with daily activities. Loss of independence in self-care tasks is primarily due to limited recovery of the arm. This study will determine if the addition of Transcranial Magnetic Stimulation (TMS) to excite the lesioned hemisphere (side of the brain affected by the stroke), to progressive functional task exercise either of the weakened arm alone or of both arms together will improve arm recovery to a greater degree than one of these two types of arm exercise alone. Individuals post-stroke will participate in 16 sessions of 1) arm rehabilitation alone (with the weaker arm only or with both arms together) or 2) arm rehabilitation plus TMS. The investigators will assess arm movement ability and function immediately following the 4-week intervention and at a 30-day follow-up to determine retention of immediate gains. The investigators hypothesize that those who receive TMS as an adjuvant will have improved arm movement ability than those who only exercise.

Studie Overzicht

Toestand

Voltooid

Conditie

Interventie / Behandeling

Gedetailleerde beschrijving

Limited recovery of upper extremity (UE) function post-stroke continues to be one of the greatest challenges faced in neurorehabilitation. There is an urgent unmet need to identify effective approaches to drive UE recovery in this population. In response to this challenge, the overall purpose of this proposed research plan is to develop rehabilitation interventions that restore UE motor recovery. Contemporary approaches to motor rehabilitation are based on evidence that behavioral experience drives cortical reorganization following neural injury. Although the rationale of driving the damaged motor cortex by focused training of the paretic UE appears straightforward, and has historically been the focus of rehabilitation, functional recovery remains limited. There remains a gap between this central neurobiological change and a meaningful behavioral change. There is a need, therefore, to augment or potentiate behavioral experience. This proposal will address this gap by examining two potential drivers of the lesioned hemisphere: 1) the non-lesioned hemisphere via engagement of the unaffected UE in behavioral training and 2) stimulation of the lesioned hemisphere via repetitive Transcranial Magnetic Stimulation (rTMS). This proposal builds on the foundation of the applicant's previous work which suggested that the contralesional, intact, hemisphere could be used to drive the lesioned hemisphere through bimanual movement. Additionally, it is possible to drive the lesioned hemisphere externally using rTMS to enhance cortical stimulation. Thus, pairing externally-driven enhancement of cortical excitability with internally-driven activation of the intact hemisphere during bilateral movements could combine to further increase excitability in the lesioned hemisphere and manifest improved movement capability of the paretic UE. The fundamental hypothesis guiding this proposal is that increased excitability of the lesioned cortex will improve behavioral function of the paretic UE post-stroke. To investigate the overall hypothesis the investigators will examine these drivers of cortical excitability and their role in UE recovery by addressing the following aims:

Specific Aim 1. Determine the magnitude of difference in central and behavioral changes in individuals with post-stroke hemiparesis randomized to a bilateral versus unilateral UE motor training program.

Specific Aim 2a. Determine the magnitude of difference in central and behavioral changes in individuals with post-stroke hemiparesis randomized to behavioral UE training compared to behavioral UE training + rTMS.

Specific Aim 2b. Determine the differential effects of rTMS on bilateral behavioral training compared to unilateral behavioral training as measured both centrally and behaviorally in individuals with post-stroke hemiparesis Post-stroke upper limb paresis and resultant loss of functional ability continues to present a barrier to those post-stroke in returning to full societal participation. Interventions that directly target the mechanism of hemiparesis, including decreased excitability of the lesioned hemisphere, are most likely to promote true recovery as opposed to the oft observed functional compensation in these individuals.

Studietype

Ingrijpend

Inschrijving (Werkelijk)

22

Fase

  • Niet toepasbaar

Contacten en locaties

In dit gedeelte vindt u de contactgegevens van degenen die het onderzoek uitvoeren en informatie over waar dit onderzoek wordt uitgevoerd.

Studie Locaties

  • Verenigde Staten
    • Florida
      • Gainesville, Florida, Verenigde Staten, 32608
        • North Florida/South Georgia Veterans Health System, Gainesville, FL

Deelname Criteria

Onderzoekers zoeken naar mensen die aan een bepaalde beschrijving voldoen, de zogenaamde geschiktheidscriteria. Enkele voorbeelden van deze criteria zijn iemands algemene gezondheidstoestand of eerdere behandelingen.

Geschiktheidscriteria

Leeftijden die in aanmerking komen voor studie

18 jaar tot 80 jaar (Volwassen, Oudere volwassene)

Accepteert gezonde vrijwilligers

Nee

Geslachten die in aanmerking komen voor studie

Allemaal

Beschrijving

Inclusion Criteria:

  • Diagnosis of 1st stroke > 6 months
  • Sub-cortical stroke confirmed with CT or MRI
  • Passive range of motion in bilateral shoulder and elbow within functional limits
  • UE Fugl-Meyer shoulder/elbow subcomponent score between 15 - 25
  • 18-80 years of age

Exclusion Criteria:

  • Use of medications that may lower seizure threshold
  • History of epilepsy, brain tumor, learning disorder, mental retardation, drug or alcohol abuse, dementia, major head trauma, or major psychiatric illness
  • evidence of epileptiform activity on EEG obtained before beginning treatment
  • history or radiographic evidence of arteriovenous malformation, intracortical hemorrhage, subarachnoid hemorrhage, or bilateral cerebrovascular disease,
  • history of cortical stroke
  • history of implanted pacemaker or medication pump, metal plate in skull, or metal objects in the eye or skull
  • pregnancy
  • pain in either upper extremity that would interfere with movement
  • unable to understand 3-step directions
  • orthopedic condition in back or UE or impaired corrected vision that would alter kinematics of reaching

Studie plan

Dit gedeelte bevat details van het studieplan, inclusief hoe de studie is opgezet en wat de studie meet.

Hoe is de studie opgezet?

Ontwerpdetails

  • Primair doel: Behandeling
  • Toewijzing: Gerandomiseerd
  • Interventioneel model: Parallelle opdracht
  • Masker: Dubbele

Wapens en interventies

Deelnemersgroep / Arm
Interventie / Behandeling
Experimenteel: Real rTMS
Real rTMS + unimanual paretic UE training
Procedure: Real rTMS
rTMS application to lesioned hemisphere; 10 Hz, 1000 pulses
Procedure: Unimanual paretic UE Training
UE exercise for 4 hours (two hours 1:1 with therapist and two hours independent at home) for 16 sessions (4 sessions/week for 4 weeks)
Actieve vergelijker: Sham rTMS
Sham rTMS + unimanual paretic UE training
Procedure: Unimanual paretic UE Training
UE exercise for 4 hours (two hours 1:1 with therapist and two hours independent at home) for 16 sessions (4 sessions/week for 4 weeks)
Procedure: Sham rTMS
sham rTMS application to lesioned hemisphere; 10 Hz, 1000 pulses

Wat meet het onderzoek?

Primaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Wolf Motor Function Test Change
Tijdsspanne: Change between Pre-intervention (baseline) to Post-intervention (4 wks following pre-intervention)
Change, in seconds, between Pre-intervention and post-intervention (4 wks following pre-intervention). The time to complete 15 separate upper extremity functional tasks are recorded. These 15 separate timed events are averaged to provide one time, in seconds. This is considered an Activity Measure on the WHO ICF model.
Change between Pre-intervention (baseline) to Post-intervention (4 wks following pre-intervention)

Secundaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Upper Extremity Fugl-Meyer Motor Assessment Change
Tijdsspanne: Change Between Pre-intervention (baseline) to Post-intervention (4 wks following pre-intervention)
Change in Score from Pre-intervention to Post-Intervention. This outcome measures arm motor control; the ability to move outside of pathologic synergistic patterns. It is a measure of impairment in Body Structure/Function. Total score ranges from 0-66, with 0 indicative of no movement and 66 considered normal motor control.
Change Between Pre-intervention (baseline) to Post-intervention (4 wks following pre-intervention)
Grip Strength Change
Tijdsspanne: Change between Pre-intervention (baseline) to Post-intervention (4 wks following pre-intervention)
Change in Paretic hand grip strength from pre- to post-intervention. Grip strength measured by hand-held dynamometer. An average of 3 5-second trials was used for analysis.
Change between Pre-intervention (baseline) to Post-intervention (4 wks following pre-intervention)
Motor Activity Log - Amount of Use Change
Tijdsspanne: Change Between Pre-intervention (baseline) to Post-intervention (4 wks following pre-intervention)
Self-Report Amount of Use of Paretic UE to complete 30 functional tasks. Each task is reported on a 0-5 scale with "0" representing "did not use my paretic hand at all for that task" and "5" representing "I used my paretic hand as much as before the stroke to complete that task." A "5" on each task would be considered "normal."
Change Between Pre-intervention (baseline) to Post-intervention (4 wks following pre-intervention)
Motor Activity Log - How Well Change
Tijdsspanne: Change between Pre-intervention (baseline) to Post-intervention (4 wks following pre-intervention)
Self-Report of How Well paretic UE performed completing 30 functional tasks. Each task is reported on a 0-5 scale with "0" representing "Unable to use my paretic hand to perform that task" and "5" representing "My paretic hand performs that task as well as it did before the stroke." A "5" on each task would be considered "normal."
Change between Pre-intervention (baseline) to Post-intervention (4 wks following pre-intervention)

Medewerkers en onderzoekers

Hier vindt u mensen en organisaties die betrokken zijn bij dit onderzoek.

Sponsor

VA Office of Research and Development

Onderzoekers

  • Hoofdonderzoeker: Dorian Kay Rose, PhD MS BS, North Florida/South Georgia Veterans Health System, Gainesville, FL

Studie record data

Deze datums volgen de voortgang van het onderzoeksdossier en de samenvatting van de ingediende resultaten bij ClinicalTrials.gov. Studieverslagen en gerapporteerde resultaten worden beoordeeld door de National Library of Medicine (NLM) om er zeker van te zijn dat ze voldoen aan specifieke kwaliteitscontrolenormen voordat ze op de openbare website worden geplaatst.

Bestudeer belangrijke data

Studie start

1 februari 2013

Primaire voltooiing (Werkelijk)

30 september 2015

Studie voltooiing (Werkelijk)

30 september 2015

Studieregistratiedata

Eerst ingediend

25 juni 2009

Eerst ingediend dat voldeed aan de QC-criteria

26 juni 2009

Eerst geplaatst (Schatting)

29 juni 2009

Updates van studierecords

Laatste update geplaatst (Werkelijk)

21 augustus 2017

Laatste update ingediend die voldeed aan QC-criteria

12 juli 2017

Laatst geverifieerd

1 juli 2017

Meer informatie

Termen gerelateerd aan deze studie

Trefwoorden

Aanvullende relevante MeSH-voorwaarden

Andere studie-ID-nummers

  • B6862-W

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