绝经后妇女钙摄入量及膳食来源分布

为了解绝经后妇女膳食钙的摄入量,钙的食物来源以及膳食结构,对济南市区154名绝经后妇女进行了7d膳食调查及24h尿钙测定.膳食调查采用记录和称重相结合的方法,用原子吸收分光光度法测定尿钙,依据《食物成份表》计算12类食物的平均摄入量以及钙在各类食物中的分布,对膳食钙摄入量与尿钙排出量进行相关分析.结果显示,济南市区绝经后妇女平均每天膳食钙摄入量为349±112mg,占RDA的44%,奶类和豆类食品虽然钙含量丰富,但摄入量较少.在被调查者中,18%的人钙摄入量不足200mg/d,66%的人不足400mg/d,仅有6%的人大于800mg/d,24h尿钙排出量平均258±83mg/24h,占膳食摄入钙的74%,膳食摄入钙与尿钙排出量无显著相关性(r=0.018,P>0.05).建议绝经后妇女增加奶和豆类食品的摄入量或摄入适量的钙补充剂以使钙的摄入量(RDA)不低于1000～1200mg/d.

CALCIUM INTAKE AND DIETARY SOURCE IN POSTMENOPAUSAL WOMEN IN URBAN AREAS OF JINAN CITY

The purpose of this study was to assess the dietary calcium intake,food source and food-consumption pattern- We also evaluated the relationship between calcium intake and output of urine calcium. Altogether 154 postmenopausal women who had normal diet were recruited in urban areas of Jinan city. Dietary intake (7d)were recorded using food questionnaires. Twelve kinds of food were classified and intake of calcium,protein, energy, iron, vitaminB and vitamin C were calculated by using the Table of Food Component. The urine calcium output were exemined by the atomic absorption spectro photometric method. On average,the calcium intake was 349mg/d which only met 14%RDA;18%and66% of participants had dietary calcium below 200mg/d and 400mg/ d respectively. The Subjects consumed less milk and soybean products which were calcium rich. The output of urine calcium was 258 83mg/24h. The consumption of calcium was not significantly associated with urine calcium output(r = 0. 018,p 0. 05). We propose that an increase in milk and soybean products intake or calcium supplement to increase the calcium intake(RDA)to 1 000 1 200mg/d for postmenopausal women be necessary.