Active clinical trials for "Heart Diseases"

To perform genetic studies of low density lipoprotein (LDL) subclasses in 160 families in whom the probands had metabolically defined hypercholesterolemia.

To assess the risk of cardiovascular mortality in workers with increased occupational exposure to carbon monoxide.

To conduct a two-year follow up of participants in a cross-sectional study of physical activity determinants. Predictors of change in vigorous exercise habits and recreational walking habits were identified as were determinants of change in the proportion of the sample who initiated, maintained, or discontinued exercise.

To examine the complex interactions among the traditional cardiovascular risk factors, particularly lipoprotein and apoprotein levels, genetic and other characteristics, and lifestyle habits in elderly women.

To examine sex differences in behavioral and psychosocial variables such as occupation, Type A behavior, and hostility as they related to primary coronary risk factors.

To determine the relative risk in a defined population of angiographically demonstrated coronary artery disease due to genetic polymorphisms at the four apolipoprotein genomic regions.

To determine whether a population with isolated systolic hypertension (ISH) had a higher prevalence of carotid disease than a normotensive population matched for age and sex, and to determine specific risk factors for carotid disease.

To study the absolute concentrations and percent of fatty acids in 480 plasma samples from an age and sex stratified random sample of subjects in the Framingham Offspring Study in order to calculate the distribution of fatty acids in this general population and to determine the inter-relationships among levels of fatty acids, in particular w3 and w6 fatty acids, with lipoproteins and apolipoproteins.

To determine whether serum insulin is a risk factor for coronary heart disease morbidity and mortality and whether dehydroepiandrosterone sulfate (DHEAS) is a risk factor for coronary heart disease mortality. Also, to ascertain the determinants of serum insulin levels among middle-aged men.

To conduct a longitudinal, natural history study of cardiovascular disease risk factors in children. Growth curves were compared for levels of blood pressure, lipids, cardiac structures and function, and related to physical growth and maturation, nutrient intake, physical activity, body composition, puberty, and smoking.