- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04504422
tDCS for Dual-task Performance in Patients With PD
Transcranial Direct Current Stimulation to Improve Dual-task Performance in Idiopathic Parkinson's Disease: A Prospective, Single-center, Double-blind, Explorative Clinical Trial
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Parkinson's disease (PD) is a disease caused by dopamine deficiency in the striatum resulting from the loss of dopaminergic neuronal cells in the cerebral substantia. It is a progressive neurodegenerative disease characterized by motor symptoms including gait disturbance and balance instability. In the early stages of Parkinson's disease, dysfunction of the sensorimotor area of the basal ganglia typically occurs, leading to habitual control hurdles. Accordingly, cognitive efforts are required to perform habitual tasks such as walking, and the automaticity of walking is reduced. Walking performance in a dual-task condition has been used to assess gait automaticity in patients with Parkinson's disease.
Transcranial direct current stimulation (tDCS) is a non-invasive brain stimulation method that can be used to change cortical activity. Recently, there has been growing attention on tDCS as an adjunct tool for rehabilitation. Several tDCS studies in patients with PD have reported the positive results of tDCS on motor function. However, few studies have reported the therapeutic effect of tDCS on the dual-task performance in PD. In addition, inconsistent results have been reported because tDCS protocol has been applied in various way. Therefore, this study aims to investigate an optimized stimulation site of tDCS that could improve the dual-task performance in patients with PD.
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Locations
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-
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Seoul, Korea, Republic of, 03080
- Seoul National University Hospital
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Description
Inclusion Criteria:
- Clinically diagnosed as idiopathic Parkinson's disease
- modified Hoehn & Yahr stage 2, 2.5, or 3
Exclusion Criteria:
- History of seizure
- Metallic implants, such as cardiac pacemaker or an artificial cochlea
- Patients with inflammation, burns, or wounds in the stimulation area
- Parkinson's disease dementia; cut-off is < 7 of Korean-Montreal Cognitive Assessment for illiterate patients, < 13 for those educated for 0.5-3 years, < 16 for 4-6 years of education, < 19 for 7-9 years of education, and < 20 for 10 or more years of education.
- Severe dyskinesia or severe on-off phenomenon
- Plan to adjust medication at the time of screening
- Sensory abnormalities of the lower extremities, other neurological or orthopedic disease affecting lower extremities, or severe cardiovascular diseases
- Vestibular disease or paroxysmal vertigo
- Pregnant or lactating patients
- Other comorbidities that make it difficult to participate in this study
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Crossover Assignment
- Masking: Double
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Primary motor cortex
The anodic electrode is positioned in the primary motor cortex (Cz) and the cathode electrode on the right orbital frontal cortex (Fp2).
The current increases to 2.0 mA over a period of 30 seconds, maintains 2.0 mA for 19 minutes, and decreases to 0 mA over 30 seconds.
|
tDCS was applied for 20 minutes through two saline-soaked sponge electrodes (diameter 6cm) using the YMS-201B (Ybrain Inc, South Korea).
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Experimental: Left dorsolateral prefrontal cortex
The anodic electrode is positioned in the left dorsolateral prefrontal cortex (F3) and the cathode electrode on the right orbital frontal cortex (Fp2).
The current increases to 2.0 mA over a period of 30 seconds, maintains 2.0 mA for 19 minutes, and decreases to 0 mA over 30 seconds.
|
tDCS was applied for 20 minutes through two saline-soaked sponge electrodes (diameter 6cm) using the YMS-201B (Ybrain Inc, South Korea).
|
Experimental: Ventromedial prefrontal cortex
The anodic electrode is positioned in the ventromedial prefrontal cortex (Fpz) and the cathode electrode on the left dorsolateral prefrontal cortex (F4).
The current increases to 2.0 mA over a period of 30 seconds, maintains 2.0 mA for 19 minutes, and decreases to 0 mA over 30 seconds.
|
tDCS was applied for 20 minutes through two saline-soaked sponge electrodes (diameter 6cm) using the YMS-201B (Ybrain Inc, South Korea).
|
Sham Comparator: Sham stimulation
The anodic electrode is positioned in the primary motor cortex (Cz) and the cathode electrode on the right orbital frontal cortex (Fp2).
The current increases to 2.0 mA during first 30 seconds, decreases to 0 mA over 30 seconds, and then stops supplying for 19 minutes.
|
tDCS was applied for 20 minutes through two saline-soaked sponge electrodes (diameter 6cm) using the YMS-201B (Ybrain Inc, South Korea).
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Cognitive dual-task interference (%) in Timed-up & go test
Time Frame: Immediately after a 20-minute tDCS session
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Percentage of dual-task interference calculated by the difference between dual-task and single-task performance [Percentage of dual-task interference=(Dual-task performance - Single-task performance)/Single-task performance]
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Immediately after a 20-minute tDCS session
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Physical dual-task interference (%) in Timed-up & go test
Time Frame: Immediately after a 20-minute tDCS session
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Percentage of dual-task interference calculated by the difference between dual-task and single-task performance [Percentage of dual-task interference=(Dual-task performance - Single-task performance)/Single-task performance]
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Immediately after a 20-minute tDCS session
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Secondary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
Timed-up & go test (sec): single task
Time Frame: Immediately after a 20-minute tDCS session
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Immediately after a 20-minute tDCS session
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Timed-up & go test (sec): cognitive dual-task
Time Frame: Immediately after a 20-minute tDCS session
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Immediately after a 20-minute tDCS session
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Timed-up & go test (sec): physical dual-task
Time Frame: Immediately after a 20-minute tDCS session
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Immediately after a 20-minute tDCS session
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Stroop test
Time Frame: Immediately after a 20-minute tDCS session
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Immediately after a 20-minute tDCS session
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Trail making test
Time Frame: Immediately after a 20-minute tDCS session
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Immediately after a 20-minute tDCS session
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Digit span test
Time Frame: Immediately after a 20-minute tDCS session
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Immediately after a 20-minute tDCS session
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Collaborators and Investigators
Investigators
- Principal Investigator: Han Gil Seo, MD, PhD, Seoul National University Hospital
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- PD-tDCS-O
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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