Combined Neural and Behavioral Therapies to Enhance Stroke Recovery

This study is currently recruiting participants. (see Contacts and Locations)
Verified May 2014 by Department of Veterans Affairs
Sponsor:
Information provided by (Responsible Party):
Department of Veterans Affairs
ClinicalTrials.gov Identifier:
NCT00929656
First received: June 25, 2009
Last updated: May 5, 2014
Last verified: May 2014
  Purpose

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.


Condition Intervention Phase
Stroke
Procedure: Bimanual UE training + rTMS
Procedure: Unimanual UE training + rTMS
Procedure: Unimanual UE training + sham rTMS
Procedure: Bimanual UE training + sham rTMS
Phase 1
Phase 2

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Efficacy Study
Intervention Model: Parallel Assignment
Masking: Double Blind (Subject, Outcomes Assessor)
Primary Purpose: Treatment
Official Title: Combining Neural and Behavioral Therapies to Enhance Stroke Recovery

Resource links provided by NLM:


Further study details as provided by Department of Veterans Affairs:

Primary Outcome Measures:
  • Wolf Motor Function Test [ Time Frame: Post-intervention and 30 days post-intervention ] [ Designated as safety issue: No ]

Secondary Outcome Measures:
  • Reach Path Ratio of Paretic UE during a reach to point task [ Time Frame: Post-intervention and 30 days post-intervention ] [ Designated as safety issue: No ]
  • Muscle onset time relative to movement initiation of the paretic UE during a reach to point task [ Time Frame: Post-intervention and 30 days post-intervention ] [ Designated as safety issue: No ]
  • Motor Evoked Potential of paretic UE muscle [ Time Frame: Post-intervention and 30 days post-intervention ] [ Designated as safety issue: No ]
  • Slope of the Input-Output Recruitment Curve [ Time Frame: Post-intervention and 30 days post-intervention ] [ Designated as safety issue: No ]
  • Short intracortical facilitation of lesioned hemisphere [ Time Frame: Post-intervention and 30 days post-intervention ] [ Designated as safety issue: No ]

Estimated Enrollment: 36
Study Start Date: August 2010
Estimated Study Completion Date: January 2015
Estimated Primary Completion Date: January 2015 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Arm 1
Unimanual UE training + rTMS
Procedure: Bimanual UE training + rTMS
rTMS application to lesioned hemisphere followed by bimanual symmetric UE exercise (100 repetitions) for 16 sessions (4 sessions/week for 4 weeks)
Experimental: Arm 2
Bimanual UE training + rTMS
Procedure: Unimanual UE training + rTMS
rTMS application to lesioned hemisphere followed by unimanual (paretic) UE exercise (100 repetitions) for 16 sessions (4 sessions/week for 4 weeks)
Sham Comparator: Arm 3
Unimanual UE training + sham rTMS
Procedure: Unimanual UE training + sham rTMS
sham rTMS application to lesioned hemisphere followed by unimanual (paretic) UE exercise (100 repetitions) for 16 sessions (4 sessions/week for 4 weeks)
Sham Comparator: Arm 4
Bimanual UE training + sham rTMS
Procedure: Bimanual UE training + sham rTMS
sham rTMS application to lesioned hemisphere followed by bimanual symmetric UE exercise (100 repetitions) for 16 sessions (4 sessions/week for 4 weeks)

Detailed Description:

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 our overall hypothesis we 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.

  Eligibility

Ages Eligible for Study:   18 Years to 80 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Criteria

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
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT00929656

Contacts
Contact: Carolyn Hanson, PhD (352) 376-1611 ext 5110 carolyn.hanson@va.gov
Contact: Helen M Emery, BS BA (352) 376-1611 ext 5855 hemery@phhp.ufl.edu

Locations
United States, Florida
North Florida/South Georgia Veterans Health System Recruiting
Gainesville, Florida, United States, 32608
Contact: Dorian K Rose, PhD MS BS    (352) 273-8307    Dorian.Rose@va.gov   
Contact: Carolynn Patten, PhD    (352) 376-1611 ext 4160    patten@phhp.ufl.edu   
Principal Investigator: Dorian Kay Rose, PhD MS BS         
Sponsors and Collaborators
Investigators
Principal Investigator: Dorian Kay Rose, PhD MS BS North Florida/South Georgia Veterans Health System
  More Information

No publications provided

Responsible Party: Department of Veterans Affairs
ClinicalTrials.gov Identifier: NCT00929656     History of Changes
Other Study ID Numbers: B6862-W
Study First Received: June 25, 2009
Last Updated: May 5, 2014
Health Authority: United States: Federal Government

Keywords provided by Department of Veterans Affairs:
Rehabilitation
Neurophysiology
Upper Extremity

Additional relevant MeSH terms:
Stroke
Cerebral Infarction
Cerebrovascular Disorders
Brain Diseases
Central Nervous System Diseases
Nervous System Diseases
Vascular Diseases
Cardiovascular Diseases
Brain Infarction
Brain Ischemia

ClinicalTrials.gov processed this record on August 01, 2014