Geleijnse J M, Witteman J C, den Breeijen J H, Hofman A, de Jong P T, Pols H A, Grobbee D E
Department of Epidemiology and Biostatistics, Erasmus University Medical School, Rotterdam, The Netherlands.
J Hypertens. 1996 Jun;14(6):737-41. doi: 10.1097/00004872-199606000-00009.
To examine the relation between dietary electrolyte intake and blood pressure in older people.
The study included 3239 participants of the Rotterdam Study (41% of the total cohort) who were aged over 55 years and had not been prescribed antihypertensive drugs. Their dietary intake was assessed by a semiquantitative food frequency questionnaire. The association of energy-adjusted intakes of potassium, magnesium and calcium with blood pressure was studied in a linear regression model with adjustment for age, sex, body mass index and alcohol intake.
An increase in potassium intake of 1 g/day was associated with a 0.9 mmHg lower systolic and a 0.8 mmHg lower diastolic blood pressure. An increase in magnesium intake of 100 mg was associated with a 1.2 mmHg lower systolic and a 1.1 mmHg lower diastolic blood pressure. Calcium intake was not independently related to blood pressure, except for a subgroup of 1360 hypertensive subjects in which a significant inverse association with diastolic blood pressure was observed.
Our findings support the view that an increase in the intake of foods rich in potassium and magnesium could lower blood pressure at older age.
研究老年人膳食电解质摄入量与血压之间的关系。
该研究纳入了鹿特丹研究中3239名参与者（占总队列的41%），这些参与者年龄超过55岁且未服用过降压药物。通过半定量食物频率问卷评估他们的膳食摄入量。在对年龄、性别、体重指数和酒精摄入量进行调整的线性回归模型中，研究了能量调整后的钾、镁和钙摄入量与血压之间的关联。
钾摄入量每天增加1克，收缩压降低0.9 mmHg，舒张压降低0.8 mmHg。镁摄入量增加100毫克，收缩压降低1.2 mmHg，舒张压降低1.1 mmHg。钙摄入量与血压无独立关联，但在1360名高血压受试者亚组中观察到与舒张压有显著负相关。
我们的研究结果支持这样一种观点，即增加富含钾和镁的食物摄入量可以降低老年人的血压。
