ClinicalTrials.gg
RecruitingNCT06145776Updated Dec 1, 2023

The Role of EEG in Identifying Cognitive Changes in Parkinson's Disease

An interventional study of tDCS + tredmill training (Standart trehab training) and Cognitite-motor Dual Task Training (DT training) in Parkinson Disease, Cognition Disorder and EEG With Abnormally Slow Frequencies, sponsored by Federal University of Paraíba. Recruiting at 2 sites in Brazil. Open to participants aged 40 Years to 80 Years. Per ClinicalTrials.gov, last updated 2023-12-01.

Sponsored by Federal University of Paraíba · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Primary completion was expected by Jan 2024, 2 years 10 months ago, but the record still lists the study as recruiting.
  • Registered 3 months after the study started (first participant enrolled Aug 2023, registered Nov 2023).
  • Started Aug 2023; still recruiting 3 years 3 months later.
Phase
Not applicable
Study type
Interventional
Enrollment
36
Allocation
Randomized
Ages
40 Years to 80 Years
Sex
All
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Study summary

This study is a group controlled clinical trial. Parallel study, patients aged 40-80 years, with Parkinson disease. Twelve sessions, three times a week, for 30 minutes. Training will consist of Transcranial Direct Current Stimulation linked to tredmill training, in 3 blocks of 7 minutes, and adicionally to the Experimental Group, dual-task cognitive-motor exercises, simultaneously. The investigators will use the folowwing instruments: Auditory Stroop Test, Trail Making Test, Montreal Cognitive Assessment, Timed-up-and-go ST and DT, UPDRS II and III and Eletroencefalography (EEG). The objective is to examine cognitive alterations on PD pacients due to intervention and the relationships between baseline outcomes in responders and non-responders to therapy.

Read the detailed description

Background: Parkinson disease (PD) is one of the most common age-related brain disorders. PD is defined primarily as a movement disorder, with the typical symptoms being resting tremor, rigidity, bradykinesia and postural instability. In addition to the defining dopamine-related motor symptoms, however, PD is increasingly recognized as a heterogeneous multisystem disorder involving other neurotransmitter systems, such as the serotonergic, noradrenergic and cholinergic circuits. Thus, a wide variety of nonmotor symptoms (NMS) linked with these neurotransmitters are commonly observed in patients with PD. Cognitive decline is among the most common and important NMS. Robust evidence indicates that in comparison with age-matched groups without PD, people with PD exhibit more rapid decline in a number of cognitive domains - in particular, executive, attentional and visuospatial domains, but also memory. In recent years, research has focused on the pre-dementia stages of cognitive impairment in PD, including mild cognitive impairment (MCI). Several longitudinal studies have shown that MCI is a harbinger of dementia in PD, although the course is variable, and stabilization of cognition - or even reversal to normal cognition - is not uncommon. A variety of biomarkers have been studied, some using novel structural and functional imaging techniques, and have documented in vivo brain changes associated with cognitive impairment. Patients with Parkinson's disease have difficulty performing a dual-task, a condition present in everyday life. It is possible that strategies such as Transcranial Direct Current Stimulation can be associated with motor training enriched with dual-task and cognitive training to improve the performance of two concurrent tasks. It is currently unclear whether specific tasks and clinical conditions of PD patients have different results after the intervention. Therefore, the proposed randomized controlled trial will examine the effects of a intervention protocol on brain eletric activity and cognitive outcomes on PD patientes and the relationships between baseline outcomes in responders and non-responders to therapy.

Discussion: This study will evaluate the effectiveness of an intervention protocol with transcranial direct current stimulation, dual-task motor-cognitive training in patients with Parkinson's disease. The study will also highlight whether, by qEEG analysis, the clinical factors and variability between individuals that could interfere in the efficacy intervention and influence the therapeutic effect.

02

Conditions studied

  • Parkinson Disease
  • Cognition Disorder
  • EEG With Abnormally Slow Frequencies

Keywords

  • Parkinson; EEG; cognition; dual-task cost
03

In context

Parkinson Disease

4,573 studies on the registry are indexed under Parkinson Disease; 1,086 are open to participants now.

This study's planned enrollment of 36 is close to the median of 40 across 3,353 interventional studies indexed under Parkinson Disease.

Browse Parkinson Disease studies →

Lead sponsor

Federal University of Paraíba is the lead sponsor of 73 studies on the registry; 6 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
40 Years to 80 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • being diagnosed with idiopathic Parkinson's disease by a neurologist based on definitive evidence of responsiveness to levodopa at the start of the disease and the history of progressive hypokinesia with asymmetric onset. PD will be diagnosed based on Parkinson's Disease Society Brain Bank (PDSBB) criteria, as described in Hughes et al. (1992)
  • Age between 40 and 70 years, with no distinction for sex, schooling level or other sociodemographic characteristics;
  • disease staging between 1.5 and 3, according to the modified Hoehn and Yahr scale (Hoehn and Yahr, 1998);
  • undergoing regular pharmacological treatment with levodopa (equivalent dose > 300 mg) or taking antiparkinsonian medication, such as anticholinergics, selegiline, dopamine agonists, and COMT (catechol-O-methyl transferase) inhibitors for at least 4 weeks prior intervention;
  • score of more than 24 points on the (Folstein et al., 1975);
  • not exhibiting other associated neurological diseases; and
  • no musculoskeletal and/or cardiorespiratory changes that could compromise gait.

Exclusion criteria

Exclusion Criteria:

  • diagnosis of atypical Parkinson's disease;
  • neuropsychiatric comorbidities;
  • convulsions, metal clips and/or pacemaker;
  • deep brain stimulation implant;
  • history of epilepsy; neurosurgery;
  • traumatic brain injury;
  • alcohol abuse or drug dependency;
  • associated diseases of the peripheral or central nervous system;
  • undergoing physical therapy at another location;
  • inability to walk 10 meters;
  • presence of important dyskinesia that prevents the participant from sitting in a chair;
  • abnormal and persistent increase in systemic blood pressure before or during training, after three measurements taken 5 min apart-Cut-off: systolic blood pressure ≥ 140 mm Hg and/or diastolic ≥ 90 mm Hg (Malachias et al., 2016);
  • not understanding any of the training protocol stages; chemical scalp treatment within the previous 30 days, and experiencing severe pain and/or discomfort that precludes performing the proposed activities.
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

MMSE and MoCA

Short tests of memory and thinking, each scored out of 30. Lower scores suggest more difficulty; criteria give a range, either to include people with memory problems or to leave them out.

05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Outcomes assessor)
Enrollment
36 participants (estimated)

Study arms

  • Experimental
    dual-task group

    Dual-Task Training Protocol (DTTP) The dual-task training protocol (DT) will consist in cognitive exercise categories: verbal fluency, mental screening tasks, discrimination, decision-making and reaction time tasks, which will be associated to treadmill gait training (Sousa et al., 2016). Verbal commands will focus on the following: (1) large strides; (2) heel strike; (3) raising the knees while walking (Kelly et al., 2012).

    Other: tDCS + tredmill training (Standart trehab training) · Other: Cognitite-motor Dual Task Training (DT training)

  • Active comparator
    control group

    The participants will perform 21 min treadmill gait training associated to tDCS active in F3 for 20 min, 3 times a week for 4 weeks.

    Other: tDCS + tredmill training (Standart trehab training)

Interventions

  • OthertDCS + tredmill training (Standart trehab training)

    Standart Rehab training will consist in 20 min treadmill gait training associated to active atDCS F3 2mA for 20 min.

  • OtherCognitite-motor Dual Task Training (DT training)

    The dual-task training protocol (DT) will consist in cognitive exercises (verbal fluency, mental screening tasks, discrimination, decision-making and reaction time tasks) and motor exercises (walking while carrying a tray with only one empty glasscarrying a glass while walks, change peaces from one pocket to another, looking from one side to another while walking)

06

What researchers measure

Primary outcomes

  1. EEG outcomes

    PSD of theta, alpha and beta and alpha/theta ratio and beta/theta ratio of 6 ROIs (righ and left: frontal, temporoparietal and occipital)

    Time frame: 30 days

  2. clinic outcome

    Dual-task cost

    Time frame: 30 days

Secondary outcomes

  1. Total Montreal Cognitive Assessment (MoCA)

    total score obtained at Montreal Cognitive Assesment, for a possible maximum of 30 points. A final total score of 26 and above is considered normal.

    Time frame: 30 days

  2. domains of MoCA

    Score of ecah subscale obtained at Montreal Cognitive Assesment: visuospatial/executive (5 points); nomination (3 points); memory (5 points for delayed recall); attention (6 points); language (3 points); abstraction (2 points); and orientation (6 points).

    Time frame: 30 days

  3. Trail Making Test part B (TMT-B)

    TMT-B is scored based on how long it takes to complete the test, within 5 minutes.

    Time frame: 30 days

  4. Stroop Test

    score of total Stroop test (Stroop Colors and Stroop Words). Word, color, and color-word T-Scores of 40 or less are considered "low." Word, color, and color-word T-Scores above 40 or are considered "normal."

    Time frame: 30 days

  5. Movement Disorder Society - Unified Parkinson's Disease Rating Scale PART II Score Compare insights MDS-Unified Parkinson's Disease Rating Scale part II (UPDRS-II)

    Score of part II of UPDRS, Motor experiences of daily living: 13 items. Score range: 0-52,\[8\] 12 and below is mild, 30 and above is severe

    Time frame: 30 days

07

Study locations

2 of 2 sites recruiting
  • Federal University of Paraiba
    João Pessoa, Paraiba 51051900, Brazil
    Recruiting
  • Aging and Neuroscience Studies Laboratory
    João Pessoa, Brazil
    Recruiting
    • Suellen Andrade · Contact
08

References and documents

Publications

  • Costa-Ribeiro A, Andrade SMMDS, Ferrer MLV, Silva OAPD, Salvador MLS, Smaili S, Lindquist ARR. Can Task Specificity Impact tDCS-Linked to Dual Task Training Gains in Parkinson's Disease? A Protocol for a Randomized Controlled Trial. Front Aging Neurosci. 2021 Jul 1;13:684689. doi: 10.3389/fnagi.2021.684689. eCollection 2021. PubMed 34276344 ↗

Individual participant data

Plan to share: No

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Started Aug 2023 (actual). Primary completion is estimated for Jan 2024, 5 months after the start.

Of 1,291 non-industry interventional studies with no phase under Parkinson Disease, half reached primary completion within 24 months of starting (the median), counting those still running; a quarter within 11 and three quarters within 44. This study's planned 5 months is below that.

Counting every sponsor, half of 1,367 studies reached it within 25 months; a quarter within 11 and three quarters within 44.

How these figures are worked out, and which studies are left out of them.

Registered
Nov 17, 2023
First posted
Nov 24, 2023
StartActual
Aug 2, 2023
Primary completionEst.
Jan 2024
CompletionEst.
Apr 2024
Last update
Dec 1, 2023
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Dec 1, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06145776
Lead sponsor
Federal University of Paraíba
Responsible party
Suellen Andrade (Suellen Marinho Andrade, Federal University of Paraíba, Federal University of Paraíba) — Principal investigator
First posted
Nov 24, 2023
Start date
Aug 2, 2023
Primary completion
Jan 2024 (estimated)
Completion
Apr 2024 (estimated)
Last update
Dec 1, 2023

Study contacts

Suellen M Andrade, Doctor
Contact
suellen.andrade@academico.ufpb.br
83993812744 ext. +55
Suellen Andrade, Doctor
principal investigator · Federal University of Paraiba

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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