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目的 探讨补充强化钙与维生素D牛奶对我国 1 0～ 1 2岁女童体格发育的影响。方法1 999年 3月至 2 0 0 1年 3月 ,我们进行了为期 2年、设有对照的双盲干预实验。将北京市 9所小学 757名平均年龄 1 0 1岁的女童分为对照组 (2 59人 ,保持日常饮食 )、A组 (2 38人 ,除日常饮食外 ,饮用钙强化牛奶 1 4 4ml/d)和B组 (2 60人 ,除日常饮食外 ,饮用钙和维生素D强化牛奶 1 4 4ml/d)。调查其食物摄入和体力活动情况。干预前、中、后测定研究对象的体重、身高、坐高及膝高。结果 干预 2年后 ,A组和B组的身高增长率 (9 52 %和 9 2 6 % )显著高于对照组的 8 59% ;A组和B组的体重增长率(34 53 %和 35 38% )显著高于对照组的 30 91 % ;A组的坐高增长率为 9 2 1 % ,显著高于B组的8 58% ,又高于对照组的 7 87% ;A组膝高的增长率为 9 0 0 % ,显著高于B组 (8 37% )和对照组(8 44% )。结论 长期补充强化钙与维生素D的牛奶可能会促进我国 1 0～ 1 2岁女童的体格发育
Objective To investigate the effects of fortified calcium and vitamin D milk on the physical development of 10 ~ 12-year-old girls in China. Method 1 From March 1999 to March 2001, we conducted a two-year controlled double-blind intervention. A total of 757 girls aged 10 years from 9 elementary schools in Beijing were divided into control group (2 59), group A (2 38). In addition to daily diet, calcium-fortified milk 14 4 ml / d) and group B (2 60 people, except for the daily diet, drinking calcium and vitamin D fortified milk 144ml / d). Investigate their food intake and physical activity. Before, during and after intervention, the body weight, height, height and knee height of the subjects were measured. Results After two years of intervention, the height growth rates of Group A and Group B were significantly higher than those of the control group (95.2% and 92.6%), while those of Group A and Group B (34.53% and 35.3% 38%) was significantly higher than the control group 30 91%; A group of sit-height growth rate of 9 2 1%, significantly higher than 8 58% of the B group, but also higher than the control group 7 87%; A group knee high With a growth rate of 900%, significantly higher than those in group B (8 37%) and control group (8 44%). Conclusion Long-term supplementation of milk supplemented with calcium and vitamin D may promote the physical development of 10 ~ 12-year-old girls in China