Non-invasive Neustimulation and Respiratory Rehabilitation

Suellen Andrade

Status: Enrolling

Conditions: Lung Diseases

Treatments: Other: Active non-invasive stimulation and inspiratory muscle training; Other: Sham compatorator and inspiratory muscle training

Study type: Interventional

Funder types: Other

Identifiers

NCT05886647

HD-tDCS+respiratory disorders

Details and patient eligibility

About

Introduction: Respiratory diseases are associated with high rate of morbidity and mortality in Brazil. Cardiopulmonary rehabilitation through respiratory muscle training, aerobic training and strengthening of upper and lower limbs emerges as one of the resources available for the treatment and monitoring of patients with respiratory diseases. To add in this perspective, the application of HD-tDCS induces significant neurophysiological and clinical effects in several body systems.

Objective: To identify the chronic effects of non-invasive neurostimulation associated with the rehabilitation of patients with respiratory disorders. Material and methods: This is a pilot study, quantitative, clinical trial type, randomized and controlled, double blind. The sample will be composed by patients with respiratory diseases, aged above 18 years old. The study will consist of two groups: (1) HD-tDCS will be applied - anodic current + respiratory rehabilitation with respiratory muscle training (RMT) and (2) Sham - Only respiratory rehabilitation with RMT without any type of cortical stimulation. The chronic effects of neurostimulation by HD-tDCS associated with cardiopulmonary rehabilitation, with TMR, during 12 sessions will be evaluated. Patients will be evaluated, before and after the protocol, in relation to cortical activation function, pulmonary function, subjective perception of effort, respiratory muscle function, functional capacity, sensation of dyspnea and quality of life. For statistical analysis, intention-to-treat analysis will be used and groups will be compared using Student's t-test, for continuous variables, or chi-square, for categorical variables. ANOVA split-plot, repeated measures for primary outcomes. Analyzes of covariance to identify differences between groups using baseline scores as covariates. Effect sizes and confidence intervals will be calculated using eta squared (η²). Expected results: Neurostimulation would enhance the effects of respiratory rehabilitation and reduce the symptoms of patients with these diseases.

Enrollment: 30 estimated patients

Sex: All

Ages: 18+ years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• confirmed clinical diagnosis for respiratory disease;
• stable disease

Exclusion criteria

• develop disabling condition that prevents the implementation of the protocol;
• join another rehabilitation program

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Double Blind

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30 participants in 2 patient groups

Group 1 experimental

Experimental group

Description:

group composed by patients with respiratory disorders, which will undergo 12 sessions of neurostimulation by HD-tDCS 4x1 (tDCS 1x1, developed by Soterix Medical Inc.). A current of 3 mA will be provided, positioning a central electrode (anode) on the left diaphragmatic primary motor cortex (4 cm lateral to the midline and 1 cm anterior to the binaural line) and the four return electrodes in a radius of 8 cm to the around. At the same time, inspiratory muscle training (IMT) will be performed by KH2; PowerBreathe International Ltd. UK with visual feedback, consisting of three series of two minutes of maximum and deep inspirations followed by two minutes of rest between them, totaling six minutes of TMI. The initial load will be through the maximum inspiratory pressure (MIP) achieved in the initial evaluation, using 40% of the total MIP in the first three weeks and 70% of the protocol will be used 40% of the MIP in the remaining three weeks and 70% in the remaining weeks.

Treatment:

Other: Active non-invasive stimulation and inspiratory muscle training

Group 2 sham comparator

Sham Comparator group

Description:

The participants allocated in the control group will receive the sham HD tDCS for 20 minutes associated with the IMT, following for this training the same load guidelines, duration and load increment used in the experimental group.

Treatment:

Other: Sham compatorator and inspiratory muscle training