Obesity Clinical Trial - Exercise Intolerance in Elderly Patients With

Status Completed

Clinical Trial Summary

The purpose of this study is to examine the effects of weight loss via hypocaloric diet, aerobic exercise training, combined hypocaloric diet and exercise training, and attention control in patients with heart failure and a normal ejection fraction (HFNEF) and body mass index greater than or equal to 30.

Clinical Trial Description

Heart failure with a normal ejection fraction (HFNEF, previously termed diastolic heart failure), accounts for the majority of heart failure cases in the population > 65 years old and has been recognized as a true geriatric syndrome. Exercise intolerance is the primary chronic symptom of HFNEF and a major determinant of these patients' severely reduced quality of life; however little is known regarding its pathophysiology and treatment. Therefore, our work has focused on understanding the pathophysiology of exercise intolerance in HFNEF and developing and testing interventions that may improve this pivotal outcome in this highly prevalent disorder of older persons. The aims of the proposed study are to conduct a randomized, controlled, single-blinded, 2x2 design trial to examine the effects of weight loss via hypocaloric diet, aerobic exercise training, combined hypocaloric diet and exercise training, and attention control in patients with HFNEF and body mass index >30 in order to test the following hypotheses: 1) Both weight loss and exercise training will improve exercise intolerance and quality of life in older, obese patients with HFNEF; 2) The combination of weight loss and exercise training will produce complementary effects on body and thigh muscle composition and additive improvements in exercise intolerance in HFNEF; 3) Improvements in exercise intolerance will correlate with improvements in lean body mass, reversal of adverse thigh muscle remodeling, and increased thigh muscle capillarity. The study has the potential to significantly advance our understanding of exercise intolerance and its treatment in the large population of older persons with HFNEF. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT00959660
Study type	Interventional
Source	Wake Forest University Health Sciences
Contact
Status	Completed
Phase	N/A
Start date	February 2009
Completion date	August 2013

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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.

Exercise Intolerance in Elderly Patients With Diastolic Heart Failure — SECRET

Clinical Trial Summary

Clinical Trial Description

Study Design

Related Conditions & MeSH terms