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Reduction of Triglycerides in Women on Hormone Replacement Therapy

2014-08-27 03:56:39 | BioPortfolio

Summary

The purpose of this study is to test the effect of lifestyle intervention on subclinical cardiovascular disease measures in women taking hormone replacement therapy (HRT).

Description

BACKGROUND:

Cardiovascular disease is a common cause of morbidity and mortality in older women. Better methods of prevention via health promotion are needed. Estrogen HRT may beneficially affect women's cardiovascular health, based on evidence from observational studies, but recent trial evidence suggests HRT may actually lead to increased risk of cardiovascular disease in new users. Understanding this untoward effect of HRT and how to prevent it is a significant aim.

DESIGN NARRATIVE:

This randomized trial of 500 women on HRT for at least two years, aged 52-60 years, and three or more years postmenopausal will test whether reduction in waist circumference, triglycerides, dense low density lipoprotein cholesterol (LDLc), number of LDL particles, C-reactive protein, and plasminogen activator inhibitor-I (PAI-I) by aggressive diet and exercise, versus a health education control, and will decrease progression or result in regression of measures of subclinical vascular disease. The intervention is designed to reduce total fat intake to 17 percent of calories, 1300 kilo calories, and increase moderate activity to 150-240 minutes per week to obtain a 10 percent reduction in weight. The primary endpoint will be a 20 percent or at least a 20 mg decrease in triglyceride levels, a 5 cm decrease in waist circumference, and a 10 percent decrease in LDLc. This will result in changes in subclinical measurements, including carotid ultrasound, electron beam computer tomography of the coronary artery and aorta, pulse wave velocity, endothelial function, and tonometry of the radial artery. Nuclear magnetic resonance spectroscopy of lipoproteins, inflammatory markers, and estrogen metabolites will also be evaluated.

Study Design

Allocation: Randomized, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Prevention

Conditions

Cardiovascular Diseases

Intervention

Diet, fat-restricted, Exercise

Location

University of Pittsburgh
Pittsburgh
Pennsylvania
United States
15261

Status

Active, not recruiting

Source

National Heart, Lung, and Blood Institute (NHLBI)

Results (where available)

View Results

Links

Published on BioPortfolio: 2014-08-27T03:56:39-0400

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Medical and Biotech [MESH] Definitions

A diet that contains limited amounts of CARBOHYDRATES. This is in distinction to a regular DIET.

Controlled physical activity, more strenuous than at rest, which is performed in order to allow assessment of physiological functions, particularly cardiovascular and pulmonary, but also aerobic capacity. Maximal (most intense) exercise is usually required but submaximal exercise is also used. The intensity of exercise is often graded, using criteria such as rate of work done, oxygen consumption, and heart rate.

A diet that contains limited amounts of fat with less than 30% of calories from all fats and less than 10% from saturated fat. Such a diet is used in control of HYPERLIPIDEMIAS. (From Bondy et al, Metabolic Control and Disease, 8th ed, pp468-70; Dorland, 27th ed)

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