Effect of tDCS on Postural Control of Children With DCD

University of Sao Paulo General Hospital

Status: Active, not recruiting

Conditions: Developmental Coordination Disorder

Treatments: Device: Transcranial direct current stimulation (tDCS)

Study type: Interventional

Funder types: Other

Identifiers

NCT03892083

39398214.4.3001.5391

Details and patient eligibility

About

This study investigates the effects of Transcranial Direct Current Stimulation (tDCS) on postural control of children with Developmental Coordination Disorder (DCD). All participants will receive four conditions of stimulation, in a crossover protocol: cerebellar anodic, cerebellar cathodic, primary motor cortex anodic (M1) or sham tDCS.

Full description

Developmental Coordination Disorder (DCD) is a highly frequent neurodevelopmental disorder with negative impacts on children's motor repertoire, quality of life and general health. One of the main problems faced is the balance deficit, which although well characterized in this population, little is known about the etiological core of this impairment. The cerebellum appears to be a functionally impaired structure in DCD, but frontal motor areas are also involved. Transcranial Direct Current Stimulation (tDCS) is a noninvasive way of inducing local-specific polarity-dependent synaptic modulation. Cerebellar tDCS (CE-tDCS) is even more recent, with still unclear results on its effects on postural balance, with only one study in children, which requires us to better understand the type of stimulation necessary to induce balance improvement in children with DCD.

Thus, the investigators aimed to verify the effects of anodal tDCS over primary motor cortex (M1-atDCS) and CE-tDCS (anodic, cathodic and sham) on the balance of children with DCD, compared to children without DCD.

METHODS: Fifteen children with DCD (total MABC-2 and balance <15%, with DCDQ positive / TL positive) and 15 children without DCD (MABC-2 total and balance ≥50% and DCDQ negative) will be assessed by platform stabilometry (PS) before and after receiving M1, cerebellar anodic, cerebellar cathodic, primary motor cortex anodic (M1) or sham tDCS (crossover). They will be evaluated under conditions without proprioceptive manipulation (direct on PS) with open and closed eyes, and with proprioceptive manipulation (on foam surface) with open and closed eyes.

Enrollment: 40 patients

Sex: All

Ages: 7 to 11 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• children of both sex, aged between seven years 0 months and 10 years and 11 months;
• Assent of the child by the Term of Assent and acceptance of parents and / or guardians to participate in the study by signing the Free and Informed Consent Form;
• Children with DCD indicative according to DSM-5 presenting Percentile <15 in the MABC-2 Motor Evaluation Battery and in the balance domain; and the score indicated for each age by the Developmental Coordination Disorder Questionnaire DCDQ-Brazil (TDC Group).
• Children without DCD presenting Percentile ≥ 50 in the total score and in the MABC-2 Motor Assessment Battery Balance domain, without indicative by DCDQ (Control Group - GC).
• Absence of intellectual disability considering performance above the 25th percentile on the RAVEN Color Progressive Matrix scale
• Absence of visual or auditory deficiencies; cardiopathies; rheumatic or orthopedic dysfunctions; neurological or psychiatric problems (except ADHD and language disorder because they are the most comorbid disorders with DCD).

Exclusion criteria

• Signs of excessive discomfort during or after any procedures or sessions involved in the research.

Trial design

Primary purpose: Basic Science

Allocation: Randomized

Interventional model: Crossover Assignment

Masking: Quadruple Blind

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40 participants in 4 patient groups

Anodal tDCS (M1)

Active Comparator group

Description:

tDCS applied over primary motor cortex. Dose: 1mA, 20 minutes

Treatment:

Device: Transcranial direct current stimulation (tDCS)

Anodal Cerebellar tDCS

Experimental group

Description:

tDCS applied over the cerebellum. Dose: 1mA, 20 minutes

Treatment:

Device: Transcranial direct current stimulation (tDCS)

Cathodal Cerebellar tDCS

Experimental group

Description:

tDCS applied over the cerebellum. Dose: 1mA, 20 minutes

Treatment:

Device: Transcranial direct current stimulation (tDCS)

Sham tDCS

Sham Comparator group

Description:

tDCS applied over the cerebellum Dose: 1mA, 20 minutes (30s ON)

Treatment:

Device: Transcranial direct current stimulation (tDCS)