- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT02903225
Clinical Value of Heart Rate Variability Indexes to Predict Outcomes After Exercise Training in Chronic Heart Failure (REINCA)
September 12, 2016 updated by: Roberto Ricca-Mallada, Universidad de la Republica
Controlled exercise training is a valuable therapeutic addition to pharmacological treatment in most patients with chronic heart failure, reducing long-term mortality, preventing cardiac remodeling and improving functional capacity.
Despite the mechanism underlying its benefits might be multifactorial, a sustained improvement in autonomic balance is usually attributed as a major effect.
Nevertheless, not all eligible subjects show the same response to exercise, probably due to several differences in the subpopulations enrolled.
The investigators hypothesize that some Heart Rate Variability indexes could be valid tools to optimize the selection and follow-up of chronic heart failure patients to training
Study Overview
Status
Completed
Conditions
Intervention / Treatment
Detailed Description
Forty subjects followed in a University Heart Failure Management Program were prospectively included.
All patients were evaluated before the randomization and after 24 weeks from enrollment.
The investigators performed a detailed anamnesis and complete physical examination, Doppler echocardiography, Stress Testing, 6-minute walk test, heart rate variability analysis, and quality of life test.
Patients were randomized either to a training group: performing a supervised training program, or a control group receiving usual care.
All patients received an optimal pharmacologic treatment including diuretics, angiotensin converting enzyme inhibitors or angiotensin receptor blockers and beta-adrenergic blocking agents.
All patients included in the training group attended a supervised program 3-days/week during 24 weeks (68-74 sessions).
Physical aerobic training appears to impart beneficial changes in autonomic control of patients with chronic heart failure through both parasympathetic and sympathetic control of hear rate.
These effects produce changes in several Heart Rate Variability indices as HF and rMSSD related with parasympathetic tone.
Study Type
Interventional
Enrollment (Actual)
40
Phase
- Phase 4
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
18 years to 80 years (Adult, Older Adult)
Accepts Healthy Volunteers
No
Genders Eligible for Study
All
Description
Inclusion Criteria:
- subjects followed in a University Heart Failure Management Program
- maintained sinus rhythm
- New York Heart Association Functional Class (NYHA) I to III and
- LVEF≤40% documented by echocardiogram
- optimal pharmacologic treatment
Exclusion Criteria:
- history of stroke, myocardial infarction or extended anterior myocardial scar
- revascularization procedures or recurrent angina within previous 3 months
- orthopedic impairment
- alcohol or drug abuse;
- implant of pacemaker or cardioverter-defibrillator (AICD);
- frequently ventricular dysrhythmias,
- atrial flutter or fibrillation
- insulin-dependent diabetes mellitus;
- severe chronic obstructive pulmonary disease or renal dysfunction
- comorbid non-cardiac disease limiting short term survival
- previous enrollment in an ET program
- subjects at great propensity for noncompliance
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: Single
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
No Intervention: Usual Care
usual care and no changes in their previous physical activity
|
|
Active Comparator: Cardiac Rehabilitation
Exercise Training program on a 3-days/week basis during 24 weeks (68-74 sessions).
Each session started with a 10-min warm-up walking period followed by 20-min of breathing exercises and free non-resistance movements of limbs.
This stage was followed by pedaling during 20-minutes at a circuit resistance training protocol using a stationary cycle-ergometer.
Each session ended with a cool down period (5-minutes) including diverse stretching maneuvers of engaged muscle groups.
The initial bicycle-ergometer workload (WL) was defined as 50% of the maximum achieved in the previous stress testing
|
All patients included in this group attended a supervised exercise training program.
A cardiologist supervised the hole training sessions.
Blood pressure, pulse rate, oxygen saturation, and body weight were measured in each session.
The modified Borg scale was used to measure the perceived exercise intensity
Other Names:
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Clinical Events
Time Frame: 6 month
|
Change in New York Heart Association Functional Class; Number of hospitalizations 6 months before and after the date of enrollment; temporary or permanent withdrawal from the study protocol (due to persistent atrial or ventricular arrhythmias; worsening of congestive heart failure symptoms; myocardial infarction; unstable angina; need of cardiac interventions: pacemaker, implantable cardioverter defibrillator, coronary revascularization or cardiac transplantation; stroke or transient ischemic attack; severe peripheral intermittent claudication or death observed during training or follow-up sessions
|
6 month
|
Mean heart rate
Time Frame: 6 month
|
the mean value of the12-min Electrocardiogram-recordings was considered the resting heart rate (beats per minute)
|
6 month
|
6 minute walk test
Time Frame: 6 month
|
walking along a 20-meter long corridor at their own pace, with the aim of covering as much ground as possible in 6 minutes.
The distance walked was expressed in meter
|
6 month
|
left ventricular ejection fraction
Time Frame: one year
|
The area-length method was measured to obtain biplane left ventricle volumes.
Left Ventricle ejection fraction was derived from the standard equation (%)
|
one year
|
quality of life
Time Frame: 6 month
|
All the subjects completed the Short-Form 36 Health Survey (SF-36), available in its Spanish version, for measuring physical and mental quality of life
|
6 month
|
Stress Test
Time Frame: 6 month
|
symptom limited exercise testing, measured in metabolic unit (MET)
|
6 month
|
square root of the mean squared successive differences of R-R intervals (rMSSD)
Time Frame: 6 month
|
short-term continuous electrocardiographic recordings were performed for heart rate variability analysis.
In the time domain, the square root of the mean squared successive differences of R-R intervals (rMSSD) were calculated.
Units: ms
|
6 month
|
Heart rate power high-frequency (HF)
Time Frame: 6 month
|
The high-frequency (HF), from 0.15 to 0.40 Hz of the power spectral analysis were calculated.
Units: ms2/Hz
|
6 month
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Sponsor
Investigators
- Principal Investigator: Roberto Ricca-Mallada, MD MSc, Hospital de Clinicas
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
April 1, 2010
Primary Completion (Actual)
November 1, 2013
Study Completion (Actual)
November 1, 2014
Study Registration Dates
First Submitted
September 5, 2016
First Submitted That Met QC Criteria
September 12, 2016
First Posted (Estimate)
September 16, 2016
Study Record Updates
Last Update Posted (Estimate)
September 16, 2016
Last Update Submitted That Met QC Criteria
September 12, 2016
Last Verified
September 1, 2016
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- CARDIAC REHABILITATION HF
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
NO
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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