National Institute for Nutrition and Health, Chinese Center for Disease Control and Prevention, Beijing 100050, China.
Beijing Chaoyang District Taiyanggong Community Health Service Center, Beijing 100028, China.
Nutrients. 2021 Oct 9;13(10):3544. doi: 10.3390/nu13103544.
Children in China's poor rural areas often have insufficient protein and micronutrient intake. There is little research about the effect of milk and egg supplementation published on these children. A prospective randomized controlled trial was applied to evaluate the effect of milk and egg supplementation on the growth and fitness of poor rural primary school students in southwest China whose physical development was below national averages. A total of 955 healthy students aged 6-13 years old were recruited. The intervention group (538) received 200 g milk and 50 g braised egg at each school day, while the control group (417) kept their normal diet and received no extra supplementation. Serum vitamin D levels were measured by an enzyme-linked immunosorbent assay. A mixed linear model with repeated measures was performed to analyze the efficacy of the supplementation. Statistically significant interactions between groups and time were seen in weight in boys, but not in girls. Significant improvement in vitamin D levels, the broad jump, and the 8 × 50 m shuttle run were observed in both genders. Therefore, the supplementation of egg and milk for two years might have a positive effect on growth and physical fitness and decreasing vitamin D deficiency in poor rural Chinese children.
中国贫困农村地区的儿童往往蛋白质和微量营养素摄入不足。关于在这些儿童身上进行的牛奶和鸡蛋补充的效果的研究很少发表。本前瞻性随机对照试验应用于评估牛奶和鸡蛋补充对中国西南地区身体发育低于全国平均水平的贫困农村小学生生长和健康的影响。共招募了 955 名 6-13 岁健康学生。干预组（538 名）在每个上学日接受 200 克牛奶和 50 克红烧蛋，而对照组（417 名）保持正常饮食，不进行额外补充。血清维生素 D 水平通过酶联免疫吸附试验进行测量。采用混合线性模型进行重复测量分析补充的效果。男孩体重存在组间和时间的统计学显著交互作用，但女孩没有。在男女两性中均观察到维生素 D 水平、跳远和 8×50 米穿梭跑显著改善。因此，鸡蛋和牛奶的两年补充可能对贫困农村中国儿童的生长和身体健康以及降低维生素 D 缺乏有积极影响。
