Blood Pressure-Lowering Mechanisms of the DASH Dietary Pattern.
Potential blood pressure- (BP-) lowering mechanisms of the DASH dietary pattern were measured in 20 unmedicated hypertensive adults in a controlled feeding study. At screening, participants averaged 44.3 ± 7.8 years, BMI 33.9 ± 6.6 Kg/m(2), and BP 144.2 ± 9.38/88.5 ± 6.03 mmHg. All consumed a control diet for one week, then were randomized to control or DASH for another two weeks (week one and two). With DASH, but not controls, SBP fell by 10.65 ± 12.89 (P = 0.023) and 9.60 ± 11.23 (P = 0.039) mmHg and DBP by 5.95 ± 8.01 (P = 0.069) and 8.60 ± 9.13 mmHg (P = 0.011) at the end of week one and two, respectively. Univariate regressions showed that changes in urinary sodium/potassium ratio (β = 1.99) and plasma renin activity (β = -15.78) and percent change in plasma nitrite after hyperemia were associated with SBP changes at week one (all P
Lin, PH; Allen, JD; Li, YJ; Yu, M; Lien, LF; Svetkey, LP
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