大学生尿钠 钾 钙与骨矿物含量的关系

The Relationship Between Urinary Sodium,Potassium,Calcium and Bone Mineral Content in Medical College Students

目的 探讨大学生的尿钠、钾、钙与骨密度及骨矿物含量的关系。方法 随机抽样调查１０５ 名大学生，用骨密度仪测定左前臂骨密度和骨矿物含量，同时收集４ 小时尿液，测定尿 Ｎａ、 Ｋ、 Ｃａ 含量。结果 尿钙与尿钠为显著性正相关（ Ｐ＜ ０．０１），而尿钙与尿钾为负相关，但未出现显著性（ Ｐ＞ ０．０５），说明尿钙排出可能与膳食中的食盐消耗有关系。尿钙与骨密度及骨矿物含量为负相关（ Ｐ＜ ０．０１），但尿钠、尿钾与骨密度未呈现显著性的负相关，可能与本人群膳食差异较小有关。结论 膳食的钠可能影响钙代谢，从而可能影响骨骼的矿物含量。

Objective To probe the relationship among the urinary sodium,potassium,calcium content and BMC and BMD in medical college students. Method 105 college students were selected randomly. The BMC and BMD were measured with obsorptiometry.4 hours urine was collected and the urinary sodium,potassium,calcium content were detected. Results The urinary sodium and calcium were significantly positive correlated(P<0.01). The urinary potassium and calcium were negative correlated,but there was no significance (P>0.05). It showed that the secretion of urine calcium might be related with the consumption of diet salt. The urinary calcium and BMC and BMD were significantly negative correlated (P<0.01).But there was no significant negative relationship among the urinary sodium,potassium and BMC and BMD. It might be the less diet difference among this group. Conclusion The urinary sodium may affect the calcium metabolism,and further affect the BMC. [