The Effects of Inspiratory Muscle Training in Patients With Heart Failure With Preserved Ejection Fraction

February 3, 2016 updated by: Julio Nuñez, Fundación para la Investigación del Hospital Clínico de Valencia
Previous studies have evaluated the effects of inspiratory muscle training in patiens with heart failure and reduced ejection fraction; nevertheless,no evidence endorse the therapeutic role of inspiratory muscle training in patients with heart failure and preserved ejection fraction. The investigators sought to evaluate whether 12-week inspiratory muscle training improves exercise capacity (peak exercise oxygen uptake and 6-minutes walk test), as well as left ventricular diastolic function, serum biomarkers and quality of life (Minnesota Living With Heart Failure Questionnaire) in patients with heart failure with preserved ejection fraction and non-reduced inspiratory muscle strength.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

26

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Spain
      • Valencia, Spain, 46010
        • Hospital Clínico Universitario

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Child
  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • a) previous history of symptomatic heart failure (New York Heart Association [NYHA] functional class ≥II)
  • b) evidence of normal left ventricular ejection fraction, defined by an ejection fraction >0.50 and an end-diastolic diameter <60 mm by 2D echocardiography
  • c) relevant structural heart disease (left ventricle hypertrophy/left atrial enlargement) and/or diastolic dysfunction estimated by 2D echocardiography
  • d) clinical stability, including no admissions in the past 30 days

Exclusion Criteria:

  • a) Patients unable to perform a valid baseline exercise test.
  • b) Unstable angina, myocardial infarction or cardiac surgery within the previous three months.
  • c)Known chronic metabolic, orthopedic, infectious disease or previous pulmonary disease;
  • d)Treatment with steroids, hormones, or cancer chemotherapy;
  • e)Reduced maximal inspiratory pressure according to age and sex;
  • f)Active smokers
  • g)Acute decompensation;
  • h)Other comorbidity with an expectancy of life less than one year

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Inspiratory muscle training
Inspiratory muscle training for improving maximum inspiratory pressure plus phrmacological treatment Pharmacological treatment (usual care)
Other: Inspiratory muscle training
Patients were instructed to train at home twice daily for 20 minutes each session during 12 weeks with a threshold inspiratory muscle trainer (Threshold IMT®, Respironics Inc.). All of them were trained under the supervision of a physiotherapist and educated to maintain diaphragmatic breathing during training. The subjects started breathing at a resistance equal to 25-30% of their maximum inspiratory pressure for 1 week.
Other: Usual care
Usual pahramacological treatment
Active Comparator: Usual care
Pharmacological treatment
Other: Usual care
Usual pahramacological treatment

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Changes in exercise capacity parameters at 12-weeks.
Time Frame: 12 weeks
Exercise parameters: peak exercise oxygen uptake (peak VO2), 6-minutes walk test
12 weeks

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Changes in 12-week quality of life, biomarkers related to the severity and parameters of left ventricular diastolic function.
Time Frame: 12 weeks

Quality of life: Minnesota Living With Heart Failure Questionnaire. Biomarkers: plasma natriuretic peptides, estimaated glomerular filtration rate, antigen carbohydrate 125.

Diastolic function: E/e´.
12 weeks

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Fundación para la Investigación del Hospital Clínico de Valencia

Collaborators

University of Valencia

Investigators

  • Principal Investigator: Julio Núñez, MD, Hospital Clinico Universitario de Valencia

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

March 1, 2011

Primary Completion (Actual)

January 1, 2012

Study Completion (Actual)

March 1, 2012

Study Registration Dates

First Submitted

October 9, 2012

First Submitted That Met QC Criteria

October 12, 2012

First Posted (Estimate)

October 16, 2012

Study Record Updates

Last Update Posted (Estimate)

February 4, 2016

Last Update Submitted That Met QC Criteria

February 3, 2016

Last Verified

February 1, 2016

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • EMI

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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