High-intensity Exercise Training in Patients With Post-infarction Heart Failure

NCT ID: NCT00218933

Last Updated: 2017-02-09

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

27 participants

Study Classification

INTERVENTIONAL

Study Start Date

2001-10-31

Study Completion Date

2005-09-30

Brief Summary

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Introduction: Moderate-intensity endurance-training is known to reduce symptoms, increase exercise tolerance, and improve quality of life in patients with chronic heart failure. The training benefits have mainly been attributed to adaptations in the peripheral circulation and skeletal muscle rather than to adaptations in cardiac performance. However attenuation of left ventricular (LV) remodelling has been documented in some studies. The effects of high- vs. moderate exercise-intensity on LV-remodelling and endothelial function in patients with post-infarction heart failure are not definitively established and were studied in the present study.

Methods: Patients with post-infarction heart failure (45-87 yrs, 22-males, 5-females, all received b-blockers and ACE-inhibitors, EF 29%, peak oxygen uptake 13 ml/kg/min) were randomized to 12-weeks, 2-3 times per week, of either moderate exercise-intensity (70% of peak heart rate), high-intensity interval-training (95% of peak heart rate) or to a control group that received advise from their regular doctors. Patients in the two exercise-groups covered similar distance on the treadmill at each exercise-session so that only exercise-intensity differed; i.e. the duration of exercise was longer in the moderate-intensity group. Ultrasound was used to assess LV-dimension and function (including Tissue Doppler Imaging, TDI) and endothelial function in the brachial-artery.

Detailed Description

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Conditions

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Heart Failure Myocardial Infarction

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

FACTORIAL

Primary Study Purpose

TREATMENT

Blinding Strategy

SINGLE

Outcome Assessors

Study Groups

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moderate exercise training

Group Type ACTIVE_COMPARATOR

Moderate intensity exercise training

Intervention Type BEHAVIORAL

12-weeks, 2-3 times per week moderate exercise-intensity (70% of peak heart rate)

high intensity exercise training

Group Type EXPERIMENTAL

High intensity exercise training

Intervention Type BEHAVIORAL

12-weeks, 2-3 times per week high-intensity interval-training (95% of peak heart rate)

controls

Group Type NO_INTERVENTION

No interventions assigned to this group

Interventions

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Moderate intensity exercise training

12-weeks, 2-3 times per week moderate exercise-intensity (70% of peak heart rate)

Intervention Type BEHAVIORAL

High intensity exercise training

12-weeks, 2-3 times per week high-intensity interval-training (95% of peak heart rate)

Intervention Type BEHAVIORAL

Eligibility Criteria

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Inclusion Criteria

Post-infarction heart failure and optimal treatment (ACE-inhibitors, Beta-blockade)

Exclusion Criteria

Not able to walk on a treadmill, unstable angina, participating in another experiment, serious arrhythmia
Minimum Eligible Age

30 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Norwegian University of Science and Technology

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Ulrik Wisloff, Ph.D

Role: PRINCIPAL_INVESTIGATOR

Norwegian University of Science and Technology

Locations

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Norwegian University of Science and Technology

Trondheim, , Norway

Site Status

Countries

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Norway

References

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Wisloff U, Stoylen A, Loennechen JP, Bruvold M, Rognmo O, Haram PM, Tjonna AE, Helgerud J, Slordahl SA, Lee SJ, Videm V, Bye A, Smith GL, Najjar SM, Ellingsen O, Skjaerpe T. Superior cardiovascular effect of aerobic interval training versus moderate continuous training in heart failure patients: a randomized study. Circulation. 2007 Jun 19;115(24):3086-94. doi: 10.1161/CIRCULATIONAHA.106.675041. Epub 2007 Jun 4.

Reference Type RESULT
PMID: 17548726 (View on PubMed)

Other Identifiers

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HFEX-1

Identifier Type: -

Identifier Source: org_study_id

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