The Effects of Nonpharmacologic Interventions on Blood Pressure of Persons With High Normal Levels

作者：Paul Kieran Whelton · 发表于：JAMA · 年份：1992 · DOI：10.1001/jama.1992.03480090061028 · 被引用次数：748 · 研究领域：Sodium Intake and Health、Magnesium in Health and Disease、Blood Pressure and Hypertension Studies

OBJECTIVE: To test the short-term feasibility and efficacy of seven nonpharmacologic interventions in persons with high normal diastolic blood pressure. DESIGN: Randomized control multicenter trials. SETTING: Volunteers recruited from the community, treated and followed up at special clinics. PARTICIPANTS: Of 16,821 screenees, 2182 men and women, aged 30 through 54 years, with diastolic blood pressure from 80 through 89 mm Hg were selected. Of these, 50 did not return for follow-up blood pressure measurements. INTERVENTIONS: Three life-style change groups (weight reduction, sodium reduction, and stress management) were each compared with unmasked nonintervention controls over 18 months. Four nutritional supplement groups (calcium, magnesium, potassium, and fish oil) were each compared singly, in double-blind fashion, with placebo controls over 6 months. MAIN OUTCOME MEASURES: Primary: change in diastolic blood pressure from baseline to final follow-up, measured by blinded observers. Secondary: changes in systolic blood pressure and intervention compliance measures. RESULTS: Weight reduction intervention produced weight loss of 3.9 kg (P less than .01), diastolic blood pressure change of -2.3 mm Hg (P less than .01), and systolic blood pressure change of -2.9 mm Hg (P less than .01). Sodium reduction interventions lowered urinary sodium excretion by 44 mmol/24 h (P less than .01), diastolic blood pressure by 0.9 mm Hg (P less than .05), and systolic blood pressure by 1.7 mm Hg...