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Dietary calcium intake and Renin Angiotensin System polymorphisms alter the blood pressure response to aerobic exercise: a randomized control design

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Author(s): Pescatello Linda | Turner Debbie | Rodriguez Nancy | Blanchard Bruce | Tsongalis Gregory | Maresh Carl | Duffy Valerie | Thompson Paul

Journal: Nutrition & Metabolism
ISSN 1743-7075

Volume: 4;
Issue: 1;
Start page: 1;
Date: 2007;
Original page

ABSTRACT
Abstract Background Dietary calcium intake and the renin angiotensin system (RAS) regulate blood pressure (BP) by modulating calcium homeostasis. Despite similar BP regulatory effects, the influence of dietary calcium intake alone and combined with RAS polymorphisms on the BP response following acute aerobic exercise (i.e., postexercise hypotension) has not been studied. Thus, we examined the effect of dietary calcium intake and selected RAS polymorphisms on postexercise hypotension. Methods Subjects were men (n = 50, 43.8 ± 1.3 yr) with high BP (145.3 ± 1.5/85.9 ± 1.1 mm Hg). They completed three experiments: non-exercise control and two cycle bouts at 40% and 60% of maximal oxygen consumption (VO2max). Subjects provided 3 d food records on five protocol-specific occasions. Dietary calcium intake was averaged and categorized as low (
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