Ho S C, Leung P C, Swaminathan R, Chan C, Chan S S, Fan Y K, Lindsay R
Department of Community and Family Medicine, Lek Yuen Health Centre, Hong Kong.
Osteoporos Int. 1994 May;4(3):167-75. doi: 10.1007/BF01623064.
A study on the determinants of bone mass in young women is being carried out among 287 young Chinese women aged 21-40 years. The baseline cross-sectional data show that the mean dietary calcium intake, estimated from the quantitative food frequency method, was 448 mg/day (standard deviation = 219). About 50% of the calcium source was from vegetables and 22% from dairy products. Among women aged 21-30 years, those with a dietary calcium intake of at least 600 mg/day had a 4%-7% higher mean bone mineral density at the spine and femur when compared with those with a mean intake below 300 mg/day. In women aged 31-40 years, subjects belonging to the highest quartile of calcium density (> or = 35 mg/420 kJ) had a 3%-8% higher mean bone mineral density at the spine and femur when compared with those in the lowest quartile (< 20.8 mg/420 kJ). Favorable calcium intake is beneficial in this population of young women with habitual low dietary calcium intake.
一项针对年轻女性骨量决定因素的研究正在287名年龄在21至40岁的中国年轻女性中开展。基线横断面数据显示，通过定量食物频率法估算的平均膳食钙摄入量为448毫克/天（标准差=219）。约50%的钙源来自蔬菜，22%来自乳制品。在21至30岁的女性中，与平均摄入量低于300毫克/天的女性相比，膳食钙摄入量至少为600毫克/天的女性脊柱和股骨的平均骨密度高4%至7%。在31至40岁的女性中，钙密度处于最高四分位数（≥35毫克/420千焦）的受试者与处于最低四分位数（<20.8毫克/420千焦）的受试者相比，脊柱和股骨的平均骨密度高3%至8%。对于这个习惯性膳食钙摄入量较低的年轻女性群体而言，适宜的钙摄入量有益。
