Usual Energy Intake Mediates the Relationship Between Food Reinforcement and BMI
Usual Energy Intake Mediates the Relationship Between Food Reinforcement and BMI
复制标题
DOI：
10.1038/oby.2012.2
复制
发表时间：
2012-09-01
期刊：
影响因子：
6.9
通讯作者：
Roemmich, James N.
中科院分区：
文献类型：
--
作者：
Epstein, Leonard H.;Carr, Katelyn A.;Roemmich, James N.
食物的相对强化值（RRVfood）与能量消耗和超重状态呈正相关。与这些变量相关的一个假设是，食物强化通过通常的能量摄入与BMI相关。通过对252名不同体重和BMI水平的成年人进行抽样调查，结果表明，日常能量摄入介导了RRV食物和BMI之间的关系（估计间接效应= 0.0027，自举95%置信区间（Cls）0.0002-0.0068，效应比= 0.34），控制年龄，性别，少数民族地位，教育，和阅读强化值（RRV阅读）。实验室能量摄入量与平时能量摄入量呈显著正相关（r = 0.24，P < 0.001），表明实验室能量摄入量可作为反映自然环境下进食行为的指标。观察到的中介关系表明，增加或减少食物强化可以通过改变摄食量来影响体重。需要研究开发修改RRV食物的方法，以通过实验确定操纵食物强化是否会导致体重变化。
The relative reinforcing value of food (RRVfood) is positively associated with energy consumed and overweight status. One hypothesis relating these variables is that food reinforcement is related to BMI through usual energy intake. Using a sample of two hundred fifty-two adults of varying weight and BMI levels, results showed that usual energy intake mediated the relationship between RRVfood and BMI (estimated indirect effect = 0.0027, bootstrapped 95% confidence intervals (Cls) 0.0002-0.0068, effect ratio = 0.34), controlling for age, sex, minority status, education, and reinforcing value of reading (RRVreading). Laboratory and usual energy intake were correlated (r = 0.24, P < 0.001), indicating that laboratory energy intake could provide an index of eating behavior in the natural environment. The mediational relationship observed suggests that increasing or decreasing food reinforcement could influence body weight by altering food consumption. Research is needed to develop methods of modifying RRVfood to determine experimentally whether manipulating food reinforcement would result in changes in body weight.