Inspiratory Muscle Training Effectiveness in Sympathetic Activity and Functional Capacity in Patients With Heart Failure

Summary

Heart failure (HF) is configured major problem for public health in the country. Affected individuals may experience fatigue, dyspnea, respiratory muscle weakness, overstimulation of the sympathetic myocardial activity, among others. In relation to the treatment of patients with heart failure with symptoms mentioned above a great alternative is the implantation of cardiac rehabilitation programs, these programs can also be associated with other muscle training measures, among these there is inspiratory muscle training (IMT), as the weakness of these muscles is rather found in this population and this directly related to signs and symptoms. OBJECTIVE: To evaluate the efficacy of inspiratory muscle training associated with a cardiac rehabilitation program in the modulation of sympathetic myocardial activity and maximal and submaximal functional capacity of patients with HF between 21-60 years. METHODOLOGY: This is a clinical trial, controlled, randomized, double-blind being developed in partnership with the Department of Physical Therapy, Federal University of Pernambuco (UFPE) and the Hospital das Clinicas (HC) of Pernambuco, whose patients will be accrued on the Recife's main referral centers in caring for patients with heart failure. Patients will undergo the evaluation of pulmonary function and respiratory muscle strength (spirometry and digital Manovacuometry) as well as on the functional capacity (Ergospirometry), cardiac innervation (myocardial scintigraphy), mobility and diaphragm thickness (ultrasound) and quality of life. After the evaluation will be randomly allocated into two groups: The control group will perform cardiac rehabilitation associated with the Sham of IMT, and the experimental group cardiac rehabilitation associated with the IMT at 30% of maximal inspiratory pressure. The intervention will last three months for both groups and after this phase patients will be submitted again to the assessment tools. EXPECTED RESULTS: To clarify the association between physical exercise associated with specific respiratory training in modulating the autonomic nervous system of patients with HF and what the relationship with reflected cardiorespiratory fitness in maximal and submaximal functional capacity.

Conditions

• Heart Failure

Interventions

RADIATION

Myocardial scintigraphy

Myocardial scintigraphy with Iodo123-Metaiodobenzylguanidine (MIBG) to assess the Sympathetic myocardial activity

DEVICE

Cardiopulmonary test

Assessment of maximal functional capacity

DEVICE

AVD-Glittre Test

Evaluation of submaximal functional capacity after inspiratory muscle training.

DEVICE

Diaphragm ultrasound

Evaluation of thickness and diaphragmatic mobility

Sponsors & Collaborators

• Universidade Federal de Pernambuco

  lead OTHER

Study Design

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

DOUBLE

Model

PARALLEL

Eligibility

Min Age

21 Years

Max Age

65 Years

Sex

ALL

Healthy Volunteers

No

Timeline & Regulatory

Start

2015-02-28

Primary Completion

2020-12-31

Completion

2020-12-31

Countries

• Brazil

Study Locations