CSIRO Agriculture & Food, Sensory, Flavour and Consumer Science, North Ryde, Australia; Wageningen University, Division of Human Nutrition,Wageningen, The Netherlands.
CSIRO Agriculture & Food, Sensory, Flavour and Consumer Science, North Ryde, Australia.
J Nutr Educ Behav. 2019 Sep;51(8):985-992. doi: 10.1016/j.jneb.2019.06.009. Epub 2019 Jul 23.
To evaluate the effectiveness of repeated exposure to multiple vs single target vegetables in increasing young children's vegetable intake.
A pilot randomized controlled trial (children aged 4-6 years, n = 32) was conducted, which exposed children at home 15 times over 5 weeks to either 1 (single target) or 3 (multiple target) vegetables. A comparison group did not change eating habits. Vegetable intake was measured by (1) a dinner meal consumed at research facilities, (2) 3-day weighed food records, and (3) usual vegetable intake (parent report). Measures were collected at baseline and either immediately after intervention (1), at 3-month follow-up (3) or both (2).
There were no differences between groups at baseline in vegetable intake. Usual vegetable intake increased in the multiple target group from .6 to 1.2 servings/d and did not change in other groups (P = .02). Food record data were not significant but underpowered. Vegetable intake from dinner meals was not significantly different between groups.
Exposure to multiple vegetables simultaneously may be more effective than a single vegetable to increase young children's intake. Larger scale research is recommended to confirm the effectiveness of offering variety in exposure and to enhance the understanding of the mechanisms involved.
评估多次接触多种目标蔬菜与单次接触单一目标蔬菜对增加幼儿蔬菜摄入量的效果。
进行了一项试点随机对照试验（年龄为 4-6 岁的儿童，n=32），该试验在家中 5 周内 15 次暴露于 1 种（单一目标）或 3 种（多种目标）蔬菜。对照组不改变饮食习惯。通过（1）在研究机构食用的晚餐、（2）3 天称重食物记录和（3）日常蔬菜摄入量（家长报告）来测量蔬菜摄入量。在基线和干预后立即（1）、3 个月随访（3）或两者（2）时收集测量值。
基线时各组间蔬菜摄入量无差异。目标蔬菜组的日常蔬菜摄入量从.6 份/天增加到 1.2 份/天，而其他组无变化（P=0.02）。食物记录数据不显著但统计效能不足。各组间晚餐餐的蔬菜摄入量无显著差异。
同时接触多种蔬菜可能比单一蔬菜更有效增加幼儿的摄入量。建议进行更大规模的研究以确认提供多种暴露的有效性，并深入了解所涉及的机制。
