Domel S B, Baranowski T, Leonard S B, Litaker M S, Baranowski J, Mullis R, Byers T, Strong W B, Treiber F, Levy M
Georgia Prevention Institute, Department of Pediatrics, Medical College of Georgia, Augusta 30912-3710.
J Am Coll Nutr. 1993 Dec;12(6):669-75. doi: 10.1080/07315724.1993.10718358.
Various nutrition guidelines recommend increased consumption of fruits and vegetables (F+V); a Year 2000 goal targets five or more daily servings of F+V. Decisions are needed regarding how to define F+V to facilitate measurement of goal achievement. Four alternative definitions (narrow and broad, each with and without legumes) were developed and applied to food frequencies from 133 children and 211 parents. Results varied by definition. Mean intake met the goal of five or more daily servings regardless of definition and exceeded it for both broad definitions by children and both broad definitions and the narrow definition with legumes for adults. Median intakes met the goal for all definitions except for children with the narrow definition without legumes, and exceeded it for children with both broad definitions and for adults with the broad definition with legumes. These differences by definition indicate that a clear definition of F+V is needed.
各种营养指南都建议增加水果和蔬菜（F+V）的摄入量；2000年的目标是每天摄入五份或更多份的F+V。需要做出关于如何定义F+V的决策，以便于衡量目标的达成情况。研究制定了四种替代定义（狭义和广义，每种又分为含豆类和不含豆类），并将其应用于133名儿童和211名家长的食物频率调查中。结果因定义而异。无论采用何种定义，平均摄入量都达到了每天五份或更多份的目标，儿童的两种广义定义以及成人的两种广义定义和含豆类的狭义定义都超过了这一目标。除了不含豆类的狭义定义下的儿童，中位数摄入量在所有定义下都达到了目标，而在两种广义定义下的儿童以及含豆类的广义定义下的成人中，中位数摄入量超过了目标。这些因定义产生的差异表明，需要对F+V进行明确的定义。
