Effect of Non-invasive Neurostimulation on Variability OF HEART RATE IN PATIENTS WITH HEART FAILURE.

Effect of Non-invasive Neurostimulation on Variability of Heart Rate During the Six-minute Walk Test of Patients With Heart Failure: a Double-blinded Clinical Trial

This study is a clinical trial, and may also be referred to as a "before and after" study, in which all subjects receive the same treatment and their condition is checked before initiation and after various times of treatment. This study will be carried out at the Laboratory of Physiotherapy in Cardiorespiratory Research, located in the building of the postgraduate course in physiotherapy at the Health Sciences Center (CCS) of the Federal University of Parahyba (UFPB), from May 2023 to May 2020. 2024. After screening, patients will undergo assessment and anthropometric measurements. Subsequently, interventions will be carried out

The patients will perform three sessions of HD-TDCS (stimulation, inhibition and Shan) of twenty minutes with an intensity of three milliamps in the left temporal cortex. Before and after each session, patients will perform the six-minute walk test. Heart rate variability (HRV) will be evaluated throughout the protocol through Holter (3-channel). At the end, the perception of exertion and the level of dyspnea of the patient, distance covered and blood pressure will be evaluated.

Inclusion Criteria:

• clinical diagnosis of heart failure;
• over eighteen years old;
• classified in functional class II and III of the New York Heart Association.

Exclusion Criteria:

• Patients with neurological or pulmonary diseases;
• Patients with cognitive alterations that make it impossible to execute commands;
• with physical limitations that prevent the performance of the exercise protocol.