Objective: To research some effects of different levels of calcium intake in the mother's bone mineral density.
Methods: On the basis of insignificantly different among energy and other nutrition intake excepting calcium, 35 volunteers in pregnant 18 weeks healthy women were randomly divided into I. II and III group [calcium intake were (550 +/- 150) mg/d, (900 +/- 150) mg/d and (1,500 +/- 150) mg/d]. The tracked study began from pregnant 20 weeks to postpartum 45 days. All over and different body of BMD (Bone Mineral Density) were assessed by dual-energy X-rays absorptiometry.
Results: I group of many location BMD were below that of other groups (P < 0. 01). As compared with the same age women's lumbar spine BMD, I group was only maintained within the rang (85.14 +/- 6.61)%, and osteoporosis in some places of bone were found in some individual. II group was (90.74 +/- 6.53)%. III group was (100.44 +/- 5.19)%. Allover different body's BMD were significantly correlated with the average BMD (r > 0.8, P < 0.1), the most significant correlation was third lumbar spine. Calcium intake of women was positively correlated with different body's BMD (r > 0.5, P < 0.01).
Conclusion: III group, calcium intake was (30.68 +/- 3.56) mmol/d, pass through period of pregnancy, parturition and short-term breast-feed mother body remain the same BMD, and prevent osteoporosis. Reporting pregnant women calcium nutrition pass through BMD, lumbar spine is good representation.