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目的 为探讨锌及其他微量元素对儿童智商 ,认知功能和生长发育的影响。方法 试验分为三组 :单纯补锌组 (Z) ,同时补锌 +微量营养素组 (Z +M) ,补微理营养素组 (M)。结果 试验前发锌平均含量为 2 2 8±0 74 μmol/g ,低于正常值下限共 2 4人 ,占受试总人数的 2 2 2 2 %。发锌含量与智商呈显著正相关 (γ =0 2 2 9,P <0 0 5 ,n =18)。补充试验后三个组发锌变化无显著性差别。Z +M组和M组智商、认知功能的改善好于Z组 ,Z+M组M组的差别无统计学意义。膝高的增长值Z +M组高于M组和Z组 ,M组高于Z组。结论 受试儿童中锌缺乏并不占主要的地位 ,其它微量营养素的缺乏更应受到重视。同时补充锌和微量营养素可以改善儿童的智能发育 ,并能促进体格发育
Objective To investigate the effects of zinc and other trace elements on children’s IQ, cognitive function and growth and development. Methods The experiment was divided into three groups: simple zinc supplementation group (Z), zinc supplementation + micronutrient group (Z + M) and supplemental nutrient group (M). Results The average content of zinc in the hair before experiment was 228 ± 0 74 μmol / g, which was lower than the lower limit of normal, a total of 24, accounting for 2222% of the total. Hair zinc content and IQ was significantly correlated (γ = 0 2 2 9, P <0 0 5, n = 18). There was no significant difference between the three groups after zinc supplementation. Z + M group and M group IQ, cognitive function improved better than Z group, Z + M group M group difference was not statistically significant. The knee height growth value of Z + M group was higher than that of M group and Z group, M group was higher than Z group. Conclusion The deficiency of zinc in the tested children does not occupy the main position. The lack of other micronutrients should be paid more attention. At the same time zinc and micronutrients can improve children’s intellectual development, and can promote physical development