The overall objective of this proposal is to examine the contribution of changes in total
body fat, enhancement in insulin-mediated vasodilatation and enhancement in
endothelium-derived nitric oxide production to the improvements in metabolic insulin action.
In addition, the study will track whether these improvements are related to changes in
Age 50 - 75 years, elevated blood pressure, BMI greater than 25 but less than 40 kg/m2