Elevated systolic blood pressure is by far the largest single contributor to cardiovascular risks in middle-aged and older adults. Lifestyle modifications, including dietary modifications, are the first line approach for treating and preventing hypertension. The general aim of the proposed study is to address the efficacy of conventional dairy products as part of the normal routine diet for lowing arterial blood pressure in middle-aged and older adults with elevated blood pressure. The investigators hypothesize that the dietary intervention including dairy products will induce significant decreases in arterial blood pressure in this population. A secondary aim will be to test the hypothesis that these reductions in systolic blood pressure will be associated with increases in arterial stiffness/compliance and endothelial vasodilatory function.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Enrollment
49
Add 4 daily servings per day of non-fat dairy (yogurt, milk, cheese) for a period of 4 weeks
Add 4 daily servings of fruit (fruit cup, apple sauce, orange juice) and remove all dairy for a period for 4 weeks
The University of Texas at Austin, Cardiovascular Aging Research Laboratory
Austin, Texas, United States
Seated blood pressure
Time frame: 4 weeks
24-hour ambulatory blood pressure
Time frame: 4 weeks
Carotid arterial compliance
Time frame: 4 weeks
Arterial stiffness
Time frame: 4 weeks
Flow mediated dilation
Time frame: 4 weeks
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