全蛋消费对健康儿童骨积累的影响:一项随机对照试验
Lauren M Coheley1, Mengyun Yu2, Xianyan Chen2
1Department of Nutrition, Texas A&M University, College Station, TX, USA.
概括
这项研究发现,在9个月内每周食用8-10个全蛋,在9-13岁的儿童中没有显著改善骨强度. 虽然全卵提供营养益处,但对青春期早期骨积累的影响很小.
科学领域:
- 儿童营养学 儿童营养学
- 骨生物学 骨生物学 骨生物学
- 营养生物化学 营养生物化学
背景情况:
- 儿童骨积累研究往往集中在单个营养素上,忽略了像蛋这样的全食物.
- 蛋富含高质量的营养素和生物活性化合物,具有潜在的骨益处.
- 以前的研究表明,儿童的蛋消费和骨质量之间存在联系,但RCT数据缺乏.
研究的目的:
- 为了确定食用整个蛋 (8-10/周) 是否提高了9个月的9-13岁儿童的骨强度.
- 为了比较全蛋与牛奶或等 (安慰剂) 对骨矿物质含量和密度的影响.
- 用外围定量计算机断层扫描来评估对皮层骨参数的影响.
主要方法:
- 一个双盲,随机对照试验 (RCT) 涉及不同祖先的9-13岁儿童.
- 干预组在9个月内与全蛋或安慰剂 (牛奶/冰糖) 一起食用食品.
- 通过双能X射线吸收计 (DXA) 和外围定量计算断层扫描 (pQCT) 测量的骨结果.
主要成果:
- 卵和安慰剂组之间的骨强度结果没有显著差异.
- 卵组中脊柱骨矿物质含量增加的趋势Z-score (p=0.07).
- 所有组都显示,随着时间的推移,总体减少了头骨矿物质密度;骨参数有所改善,但在不同组之间没有差异.
结论:
- 在9个月内每周食用8-10个全蛋,在进入青春期的儿童中显示出最小的骨反应.
- 全蛋提供营养优势,但它们对这个年龄段的骨积累的影响需要进一步研究.
- 这项研究强调,需要对儿童群体中全食食品的骨质生成潜力进行更多研究.
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