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随机抽取拉萨市49—54岁年龄组108名(男性42人,女性66人)藏族人群,测定身高、体重、血压及24小时尿钠、钾、钙、镁和氨基酸等生物学指标,以评价藏族人群独特的饮食习惯与血压水平之关系.结果显示:平均收缩压、舒张压、尿钠和钠/钾比高;尿钾、钙、镁、牛磺酸及1—甲基组氨酸排泄量低.尿镁与收缩压呈负相关;3—甲基组氨酸与舒张压呈负相关.尿镁及3—甲基组氨酸作为独立因素分别进入收缩压及舒张压多元回归方程.收缩压、舒张压与尿钠呈负相关、与体重指数呈正相关,但相关系数均无显著意义.结果提示:饮食中的多种营养因素包括低钾、低镁和低3—甲基组氨酸摄入可能与血压水平和高血压患病率高有一定关系.改善饮食结构可有利于正常血压的调节和高血压的防治.
A total of 108 Tibetan (42 males and 66 females) Tibetan population aged 49-54 years were randomly selected for the determination of height, weight, blood pressure and 24-hour urine sodium, potassium, calcium, magnesium and amino acids and other biological indicators to evaluate The results showed that: the average systolic blood pressure, diastolic blood pressure, high urinary sodium and sodium / potassium ratio; urine potassium, calcium, magnesium, taurine and 1-methyl histidine excretion The urinary magnesium was negatively correlated with systolic blood pressure, while the 3-methylhistidine was negatively correlated with diastolic blood pressure. Both urinary magnesium and 3-methylhistidine entered the multiple regression equation of systolic and diastolic blood pressure as independent factors. Systolic blood pressure and diastolic blood pressure were negatively correlated with urinary sodium and positively correlated with body mass index, but no significant correlation was found between the two groups.Results indicated that various nutritional factors in diet including low potassium, low magnesium and low 3-methyladenosine Acid intake may be related to the high blood pressure level and the prevalence of hypertension, improving the diet may be beneficial to the regulation of normotensive blood pressure and prevention and treatment of hypertension.