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Parkinson DiseaseTMSNCT05008289

Effects of Magnetic Stimulation of the Dorsal Spinal Cord on Gait in Patients With Parkinson´s Disease and Deep Brain Stimulation

A study testing Magnetic transcutaneous spinal cord stimulation and Transcutaneous electrical nerve stimulation in people with Parkinson Disease, run by University of Sao Paulo General Hospital at 1 site in Brazil.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

Gait disorders are symptoms that significantly compromise the quality of life and functionality of patients with Parkinson's disease (PD). When they are not responsive to drug dopaminergic therapy and deep brain stimulation (DBS), the management of these symptoms is a challenge in clinical practice. Read more about this study

Who is it for?
Ages 21 to 80 years
Conditions the study is for
Parkinson Disease
What is being tested?
Magnetic transcutaneous spinal cord stimulation and Transcutaneous electrical nerve stimulation
Type of treatment
Medical device
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
42 participants
Where
1 siteBrazil
Study dates
27 Nov 2020to 1 Jul 2025
Phase
Interventional
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 21 to 80 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Men and women (non-pregnant) aged between 21 and 80 years;
  • Presence of deep brain stimulation in the subthalamic nucleus or globus pallidus
  • Participants with idiopathic Parkinson's disease at Hoehn Yahr stages between 2 and 4 during off-medication, whose primary symptom includes altered gait and/or balance (score equal to or greater than 1 on sub-item 2.12 of the Unified Parkinson's Disease Rating Scale (MDS-UPDRS) ["gait and balance"]). Patients should present the above symptoms even though they are optimized from a drug point of view and with optimized programming. The criteria to be optimized will be defined by a neurologist specialized in movement disorders who will evaluate the case.
  • Able to give informed consent in accordance with institutional policies;
  • Able to meet all testing and follow-up requirements as defined by the study protocol

Who cannot join

  • Patients with unstabilized psychiatric comorbidities;
  • Impossibility to consent to their participation in the study;
  • Patients with uncontrolled infection or other uncontrolled pre-existing medical conditions (eg, decompensated diabetes, high blood pressure, symptomatic pneumo or heart disease);
  • Concurrent treatment with other experimental drugs;
  • Pregnant or breastfeeding women;
  • Patients who cannot walk, not even with unilateral aid of a walking aid device or another person, when they are without their medication for Parkinson's Disease (off-medication);
  • Presence of cardiac pacemaker.

Trial locations and contacts

1 site in 1 country.

Brazil1 site
  • University of Sao Paulo

    São Paulo, São Paulo, 01246-000

Other trials in Brazil

About this study

Gait disorders are symptoms that significantly compromise the quality of life and functionality of patients with Parkinson's disease (PD). When they are not responsive to drug dopaminergic therapy and deep brain stimulation (DBS), the management of these symptoms is a challenge in clinical practice. Although deep brain stimulation is useful in the motor symptoms of Parkinson's disease, gait symptoms remains a challenge in patients undergoing this therapy. This is because, in addition to adjustments in the DBS programming not adding evident benefit in some patients with gait disorders, motor symptoms tend to progress over the years. In this context, spinal cord invasive electrical stimulation was proposed as a potential and effective therapy in a group of patients with PD who presented with gait impairment. More recently, the application of transcutaneous magnetic stimulation of the spinal cord has emerged as a possible therapeutic option, as it could stimulate neural elements in a non-invasive way. The general objective will be to study the effect of transcutaneous magnetic stimulation of the spinal cord on gait in PD patients with deep brain stimulation refractory to dopaminergic therapy. The method of the present study will be a randomized, double-blind, placebo-controlled, parallel, phase II clinical trial that will evaluate the efficacy of transcutaneous magnetic stimulation of the spinal cord in patients with PD and deep brain stimulation who present gait disorders refractory to dopaminergic therapy. The primary outcome will be the change in gait speed between pre-stimulation and post-stimulation conditions between the two groups (active and placebo) assessed using the Timed Up and Go Test (TUG). Secondary outcomes will be the effects of stimulation on other gait measures (speed, step length, stride length, cadence, step width, sway time, support time and the presence of blocks), other motor symptoms (Unified Parkinson's Disease Rating Scale), cognitive alterations, quality of life and side effects. Statistical analysis will be performed using ANOVA for repeated measures and 38 patients will be included. The expected results are supported by transcutaneous magnetic stimulation of the spinal cord, which may improve gait disorders in participants with PD and DBS.

Being tested
Magnetic transcutaneous spinal cord stimulation, Transcutaneous electrical nerve stimulation
Keywords
parkinson disease, magnetic transcutaneous stimulation, spinal cord stimulation, gait in parkinson disease, deep brain stimulation
Medical subject headings
Parkinson Disease

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Magnetic transcutaneous spinal cord stimulationDevice

    Also called TMS

    In the active group, non-invasive spinal cord stimulation will be applied by placing a circular magnetic coil (Magventure®️ MagPro®️ R20) on the skin, in the upper thoracic region (thoracic level T2-T3). The intensity of stimulation will represent 100% of the motor threshold, which is determined by abdominal muscle contractions, found from single pulses, gradually applied every 10 seconds until the onset of contractions. The intermittent theta burst stimulation protocol will consist of 20 stimulation trains, with an interval of 8 seconds between trains, each train will have 20 bursts, and each burst will have 3 pulses at 50 Hertz repeated at 5 Hertz. In total 1200 pulses will be applied for 3 minutes and 58 seconds.

  • Transcutaneous electrical nerve stimulationDevice

    Also called TENS

    To create a sensation of muscle contraction and impression of active stimulation, both the placebo and active groups will be subjected to the sensory effect of transcutaneous electrical neurostimulation (TENS). The surface electrodes of TENS (model Neurodyn®️, Ibramed®️) will be placed in parallel at the height of the thoracic level T2-T3, with the following parameters: 80Hertz, 150ms, approximately at 60 miliampère.

    In the placebo group, a coil will be allocated in the thoracic region T2-T3, however this coil will not be connected to the stimulation device, and another active coil will be positioned about 15cm behind, away from its field of view, to provide the idea from the sound stimulus that it is being stimulated.

Study groups in NCT05008289
Study groupRoleWhat they receive
ACTIVEActive comparatorMagnetic transcutaneous spinal cord stimulation
Receives: Device: Magnetic transcutaneous spinal cord stimulation; Device: Transcutaneous electrical nerve stimulation
PLACEBOSham comparatorNot described
Receives: Device: Transcutaneous electrical nerve stimulation

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Timed Up and Go - Test 5 Meters (TUG-Test 5M)

    The primary outcome will be the change in gait speed between pre-stimulation and post-stimulation conditions between the two groups (active and placebo) assessed using the 5-meter total Timed Up and Go Test (TUG). Mixel model ANOVA, with TUG as the dependent variable, and time and group as independent variables - "group" would have two levels ("active" and "placebo"). Our alternative hypotesis is that "the time vs. group" interaction effect is significant. Then we should use post hoc statistical tests to explore our data further and to compare the effects of active versus placebo at different time levels.

    Measured: Baseline, immediately after the fifth day of stimulation, seven days after the stimulation, twenty-eight days after stimulation

Secondary outcomes (13)
  1. Freezing of gait score (FOG SCORE)

    Change in FOG SCORE between pre-stimulation and post-stimulation conditions.Minimum value 0 and maximum value 36. Higher value is worse.

    Measured: Baseline, immediately after the fifth day of stimulation, seven days after the stimulation, twenty-eight days after stimulation.

  2. Percentage of freezing by video analysis of Timed Up and Go - Test

    Change in percentage between pre-stimulation and post-stimulation conditions

    Measured: Baseline, immediately after the fifth day of stimulation, seven days after the stimulation, twenty-eight days after stimulation.

  3. Unified Parkinson's Disease Rating Scale (MDS-UPDRS) - Part III

    Change in UPDRS PART III between pre-stimulation and post-stimulation conditions. Minimum value 0 and maximum value 132. Higher value is worse.

    Measured: Baseline, immediately after the fifth day of stimulation, seven days after the stimulation, twenty-eight days after stimulation.

  4. Timed Up and Go - Test 5 Meters (TUG-Test 5M) Dual Task

    Change in gait speed between pre-stimulation and post-stimulation conditions

    Measured: Baseline, immediately after the fifth day of stimulation, seven days after the stimulation, twenty-eight days after stimulation.

  5. Mini Balance Evaluation Systems Test (Mini-BESTest)

    Change in balance between pre-stimulation and post-stimulation conditions. Minimum value 0 and maximum value 108. Higher value is better.

    Measured: Baseline, immediately after the fifth day of stimulation, seven days after the stimulation, twenty-eight days after stimulation.

  6. New Freezing of Gait Questionnaire (NFOG-Q)

    Change in NFOG-Q between pre-stimulation and post-stimulation conditions. Minimum 0 Maximum 28. Higher value is worse.

    Measured: Baseline, immediately after the fifth day of stimulation, seven days after the stimulation, fourteen days after the stimulation, twenty-one days after the stimulation, twenty-eight, thirty-five and forty-two days after the stimulation.

  7. Subitems 2.12 and 2.13 of Unified Parkinson's Disease Rating Scale (MDS-UPDRS)

    Change between pre-stimulation and post-stimulation conditions

    Measured: Baseline, immediately after the fifth day of stimulation, seven days after the stimulation, fourteen days after the stimulation, twenty-one days after the stimulation, twenty-eight, thirty-five and forty-two days after the stimulation

  8. Parkinson's Disease Questionnaire 39 (PDQ-39);

    Change in PDQ-39 between pre-stimulation and post-stimulation conditions. Minimum value 0% and maximum value 100%. Higher value is worse.

    Measured: Baseline, seven days after the stimulation, twenty-eight days after stimulation.

  9. Falls Efficacy Scale (FES-I)

    Change in FES-I between pre-stimulation and post-stimulation conditions. Minimum value 16 and maximum value 64. Higher value is worse.

    Measured: Baseline, seven days after the stimulation, twenty-eight days after stimulation.

  10. Activities-specific Balance Confidence (ABC) Scale

    Change in ABC scale between pre-stimulation and post-stimulation conditions. Minimum value 0 and maximum value 100%. Higher value is better.

    Measured: Baseline, seven days after the stimulation, twenty-eight days after stimulation.

  11. Visual analog scale (VAS)

    Change in pain between pre-stimulation and post-stimulation conditions. Minimum value 0 and maximum value 10. Higher value is worse.

    Measured: Baseline, immediately after the fifth day of stimulation, seven days after the stimulation, twenty-eight days after stimulation.

  12. Patient Global Impression of Change (PGIC)

    Impression of change post-stimulation conditions

    Measured: Baseline, immediately after the fifth day of stimulation, seven days after the stimulation, fourteen days after the stimulation, twenty-one days after the stimulation, twenty-eight, thirty-five and forty-two days after the stimulation

  13. Frontal assessment battery (FAB);

    Change in executive function between pre-stimulation and post-stimulation conditions. Minimum value 0 and maximum value 18. Higher value is better.

    Measured: Baseline, immediately after the fifth day of stimulation, seven days after the stimulation, twenty-eight days after stimulation.

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted17 Aug 2021
  2. Study start27 Nov 2020
  3. Primary completion1 May 2025
  4. Study completion1 Jul 2025

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Triple blind
Who is masked
Participant, Investigator, Outcomes assessor
Enrolment
42 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05008289
Sponsor's protocol ID
16233819800000068
Acronym
TMS
Status last verified
Jan 2026
First submitted
9 Aug 2021
Last updated
12 Feb 2026
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No

Questions about this trial

What is this clinical trial studying?

A study testing Magnetic transcutaneous spinal cord stimulation and Transcutaneous electrical nerve stimulation in people with Parkinson Disease, run by University of Sao Paulo General Hospital at 1 site in Brazil.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 5 inclusion and 7 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 12 Feb 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Brazil. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Timed Up and Go - Test 5 Meters (TUG-Test 5M) (time frame: Baseline, immediately after the fifth day of stimulation, seven days after the stimulation, twenty-eight days after stimulation). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 12 Feb 2026.

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