Department of Human Sciences, College of Behavioral and Health Sciences, Middle Tennessee State University, Murfreesboro, TN.
Information Technology Division, Middle Tennessee State University, Murfreesboro, TN.
J Nutr Educ Behav. 2020 Feb;52(2):145-151. doi: 10.1016/j.jneb.2019.07.016. Epub 2019 Sep 5.
To compare effects of interventions aimed at increasing fruit and vegetable (FV) intake in children.
Pre-post comparison and intervention study with randomly grouped classrooms.
Head Start classrooms.
Two hundred nine Head Start children.
Treatment A (n = 61) and treatment B (n = 82) children received high-carotenoid FVs for 8 weeks. Treatment B children also received weekly FV education, and their caregivers received FV information and recipes. The comparison group (n = 66) received neither FVs nor education.
Carotenoid values in Raman units.
Multilevel mixed models, ANCOVA, and post hoc analysis were used.
Multilevel mixed models with the group as fixed effect and classrooms within group as a random effect; ANCOVA showed that the only significant variable affecting the score was the group main effect. The intraclass correlation coefficient was 0.037; the Raman unit scores of treatment B were significantly higher than those of treatment A (P = .02) or comparison group (P < .001). However, there was no significant difference between treatment A and comparison (P = .10; Cohen D = .71).
The results suggested that providing education where FVs are offered may help increase consumption. Measurement of carotenoids in family members who received FVs plus education, as well as replication of this model in different locations and ages of children should be investigated in future research.
比较旨在增加儿童水果和蔬菜(FV)摄入量的干预措施的效果。
前后比较和干预研究,随机分组教室。
“学步儿童发展计划”(Head Start)教室。
209 名“学步儿童发展计划”儿童。
治疗 A(n=61)和治疗 B(n=82)儿童接受 8 周高类胡萝卜素 FV。治疗 B 组儿童还接受了每周 FV 教育,其照顾者收到了 FV 信息和食谱。对照组(n=66)既未接受 FV 也未接受教育。
拉曼单位的类胡萝卜素值。
使用多层混合模型、协方差分析和事后分析。
以组为固定效应、班级为随机效应的多层混合模型;协方差分析显示,唯一影响评分的显著变量是组主效应。组内相关系数为 0.037;治疗 B 的拉曼单位评分明显高于治疗 A(P=0.02)或对照组(P<0.001)。然而,治疗 A 与对照组之间无显著差异(P=0.10;Cohen D=0.71)。
结果表明,提供 FV 并同时提供教育可能有助于增加摄入量。未来的研究应调查接受 FV 加教育的家庭成员中类胡萝卜素的测量,以及在不同地点和儿童年龄段复制这种模式。