大学生VitC营养水平与骨密度关系的探讨

目的：探讨大学生VitC营养水平与骨密度及骨矿物含量的关系。方法：随机选取105名大学生，口服500mgVitC后，收集4h尿液，测定尿中还原型VitC、尿钙、尿氟和尿肌酐含量，用BH－6012单光子骨密度仪测定左臂前1／3处桡骨和尺骨骨密度和骨矿物含量。用t检验和相关作统计分析。结果：VitC营养水平正常与充足的青年骨密度、骨矿物含量显著增高，而尿钙显著减少（＜0．01）。当VitC缺乏时，尿VitC与尿氟有显著性的负相关（P＜0．01）。结论：大学生VitC营养水平可能影响骨密度和骨矿物含量。

Study on Relationship between Vitamin C Nutriture and Urinary Calcium, Urinary Fluoride, Bone Density in College Students

Objective: To study the relationship among vitamin C nutritur e and the contents of urinary calcium, urinary fluoride, bone density or bone mineral contents in college students. Methods: 105 medical college students were randomly selected to perfim a loading nrine test,500mg vitamin C was taken orally and 4 - hour urine was collected to determine urinary calcium,fluoride and creatinine contents.The bone density and bone minetal contents were measured with 6 012 single - photon absorptiometry. Results: The bone dedrity and bone mineral contents incrdased and the urinary calcium decnd significantly in students with the normal and abundant urinary vitamin C (P < 0.01 ),a signidficant negetive cormlation me observed between urinary vitamin C and urinary fluoride in students with vitamin C deficiency(P < 0. 01 ). Conclusions: It is suggested that vitamin C nutritare of college students could affect their bone density and bone mineral conents.