Birch L L, Fisher J O
Department of Human Development and Family Studies, Graduate Program in Nutrition, The Pennsylvania State University, University Park 16802, USA.
Am J Clin Nutr. 2000 May;71(5):1054-61. doi: 10.1093/ajcn/71.5.1054.
Childhood overweight has increased dramatically, particularly among young girls. Genetic and environmental factors produce the overweight phenotype. Nonshared environments appear to account for a substantial proportion of the population variance in overweight but remain largely unspecified and unmeasured.
Our goal was to evaluate the influence of maternal control in feeding, an aspect of nonshared family environment, on daughters' eating and relative weight.
Structural equation modeling was used to test models that describe maternal influences on daughters' eating and relative weight. The participants were 197 white, non-Hispanic families with 5-y-old daughters. The mothers' own dietary restraint and their perceptions of their daughters' risk of overweight were used to predict maternal control in feeding, which was used to predict the daughters' eating and weight outcomes.
Maternal body mass index was a modest predictor of daughters' relative weight. The addition of the family-environment pathway provided a good fit and showed additional, independent prediction of daughters' relative weight. Mothers' dietary restraint and perceptions of their daughters' risk of overweight predicted maternal child-feeding practices, which in turn predicted daughters' eating and relative weight.
Child-specific aspects of the family environment, including mothers' child-feeding practices and perceptions of their daughters' risk of overweight, may represent important, nonshared, environmental influences on daughters' eating and relative weight. The environmental effects noted were modest but comparable in magnitude to the direct association between maternal and child weight, which indicates that measuring family environmental factors can enhance our understanding of the etiology of childhood overweight.
儿童超重现象急剧增加,尤其是在年轻女孩中。遗传和环境因素导致了超重的表型。非共享环境似乎在超重的人群差异中占很大比例,但在很大程度上仍未明确且未得到测量。
我们的目标是评估喂养方面的母亲控制(非共享家庭环境的一个方面)对女儿饮食和相对体重的影响。
采用结构方程模型来检验描述母亲对女儿饮食和相对体重影响的模型。参与者为197个有5岁女儿的白人、非西班牙裔家庭。母亲自身的饮食克制以及她们对女儿超重风险的认知被用于预测喂养方面的母亲控制,而这又被用于预测女儿的饮食和体重结果。
母亲的体重指数是女儿相对体重的一个适度预测指标。加入家庭环境路径后拟合良好,并显示出对女儿相对体重的额外独立预测。母亲的饮食克制和对女儿超重风险的认知预测了母亲的育儿喂养行为,进而预测了女儿的饮食和相对体重。
家庭环境中特定于孩子的方面,包括母亲的育儿喂养行为以及她们对女儿超重风险的认知,可能是对女儿饮食和相对体重的重要、非共享的环境影响因素。所指出的环境影响虽适度,但在量级上与母亲和孩子体重之间的直接关联相当,这表明测量家庭环境因素可以增强我们对儿童超重病因的理解。