Department of Public Health Food Studies and Nutrition, Syracuse University, Syracuse, NY 13244, USA.
Human Development and Family Studies, Auburn University, Auburn, AL 36849, USA.
Nutrients. 2018 Oct 23;10(11):1569. doi: 10.3390/nu10111569.
When dietary behaviors are habitual, intentions are low, and environmental cues, such as the consumer food environment, might guide behavior. How might intentions to eat healthily and ultimately actual dietary behaviors, be influenced by the consumer food environment (including the availability and affordability of healthy foods) in convenience stores? This study will determine pathways between the healthfulness of convenience stores and college students' dietary intentions/behaviors, and body mass index (BMI).
Through multilevel structural equation modeling, a comparison was made of students' healthful meal intentions (HMI); intake (fruits/vegetables, %kcal/fat, sugar-sweetened beverages (SSBs) and whole-grains); and measured BMI; as well as the healthfulness of convenience stores (fruits/vegetables availability/quality, healthy food availability/affordability). Data was collected on 1401 students and 41 convenience stores across 13 US college campuses.
Controlling for gender, HMI was negatively associated with SSBs ( = -0.859) and %kcal/fat ( = -1.057) and positively with whole-grains ( = 0.186) and fruits/vegetables intake ( = 0.267); %Kcal/fat was positively ( = 0.098) and fruits/vegetables intake ( = -0.055) negatively associated with BMI. Campus level, fruits/vegetables availability were positively associated to HMI ( = 0.214, = 0.129) and directly/negatively to BMI ( = -2.657, = -1.124).
HMI modifies dietary behaviors, with energy from fat and fruit/vegetable intake the most predictive of weight. Availability of fruit/vegetables in convenience stores make it easier for young adults to eat well.
当饮食行为成为习惯，而意图较低，且环境提示（如消费者的食物环境）可能会引导行为时，消费者的食物环境（包括健康食品的可得性和可负担性）会如何影响便利店中人们健康饮食的意图和最终实际的饮食行为，以及体重指数（BMI）？本研究将确定便利店的健康状况与大学生饮食意图/行为和 BMI 之间的途径。
通过多层次结构方程模型，比较了学生健康餐意图（HMI）；摄入（水果/蔬菜、%kcal/脂肪、含糖饮料（SSB）和全谷物）；以及测量的 BMI；以及便利店的健康状况（水果/蔬菜的供应/质量、健康食品的供应/可负担性）。在美国 13 所大学校园的 1401 名学生和 41 家便利店收集了数据。
控制性别因素后，HMI 与 SSB（= -0.859）和%kcal/脂肪（= -1.057）呈负相关，与全谷物（= 0.186）和水果/蔬菜摄入（= 0.267）呈正相关；%Kcal/脂肪与 BMI 呈正相关（= 0.098），与水果/蔬菜摄入呈负相关（= -0.055）。校园层面，水果/蔬菜的供应与 HMI 呈正相关（= 0.214，= 0.129），与 BMI 呈直接/负相关（= -2.657，= -1.124）。
HMI 改变了饮食行为，脂肪和水果/蔬菜的能量摄入最能预测体重。便利店中水果/蔬菜的供应使年轻人更容易吃得健康。
