Explaining the positive relationship between fourth-grade children's body mass index and energy intake at school-provided meals (breakfast and lunch).
Explaining the positive relationship between fourth-grade children's body mass index and energy intake at school-provided meals (breakfast and lunch).
复制标题
解释四年级儿童的体重指数与学校提供的膳食（早餐和午餐）的能量摄入之间的正相关关系。
DOI：
10.1111/josh.12035
复制
发表时间：
2013
期刊：
影响因子：
--
通讯作者：
Hitchcock,DavidB
中科院分区：
文献类型：
--
作者：
Guinn,CarolineH;Baxter,SuzanneD;Royer,JulieA;Hitchcock,DavidB
BACKGROUNDA 2010 publication showed a positive relationship between children's body mass index (BMI) and energy intake at school‐provided meals (as assessed by direct meal observations). To help explain that relationship, we investigated 7 outcome variables concerning aspects of school‐provided meals: energy content of items selected, number of meal components selected, number of meal components eaten, amounts eaten of standardized school‐meal portions, energy intake from flavored milk, energy intake received in trades, and energy content given in trades.METHODSFourth‐grade children (N = 465) from Columbia, SC, were observed eating school‐provided breakfast and lunch on 1 to 4 days per child. Researchers measured children's weight and height. For daily values at school meals, a generalized linear model was fit with BMI (dependent variable) and the 7 outcome variables, sex, and age (independent variables).RESULTSBMI was positively related to amounts eaten of standardized school‐meal portions (p < .0001) and increased 8.45 kg/m2per serving, controlling for other variables in the model. BMI was positively related to energy intake from flavored milk (p = .0041) and increased 0.347 kg/m2for every 100 kcal consumed. BMI was negatively related to energy intake received in trades (p = .0003) and decreased 0.468 kg/m2for every 100 kcal received. BMI was not significantly related to 4 outcome variables.CONCLUSIONSKnowing that relationships between BMI and actual consumption, not selection, at school‐provided meals explained the (previously found) positive relationship between BMI and energy intake at school‐provided meals is helpful for school‐based obesity interventions.
