Department of Exercise, Nutrition & Health Sciences,University of Bristol, Tyndall Avenue, Bristol, BS8 1TP, UK.
Int J Behav Nutr Phys Act. 2007 Sep 13;4:35. doi: 10.1186/1479-5868-4-35.
The physical environments in which adolescents reside and their access to food stores may influence their consumption of fruit and vegetables. This association could either be direct or mediated via psychosocial variables or home availability of fruit and vegetables. A greater understanding of these associations would aide the design of new interventions. The purpose of this study was to examine associations between distance to food stores and restaurants and fruit and vegetable consumption and the possible mediating role of psychosocial variables and home availability.
Fruit and vegetable consumption of 204 Boy Scouts was assessed by a food frequency questionnaire in 2003. Participant addresses were geo-coded and distance to different types of food stores and restaurants calculated. Fruit and vegetable preferences, home availability and self-efficacy were measured. Regression models were run with backward deletion of non-significant environmental and psychosocial variables. Mediation tests were performed.
Residing further away from a small food store (SFS) (convenience store and drug store) was associated with increased fruit and juice and low fat vegetable consumption. Residing closer to a fast food restaurant was associated with increased high fat vegetable and fruit and juice consumption. Vegetable preferences partially mediated (26%) the relationship between low fat vegetable consumption and distance to the nearest SFS.
Distance to SFS and fast food restaurants were associated with fruit and vegetable consumption among male adolescents. Vegetable preferences partially mediated the distance to low fat vegetable relationship. More research is needed to elucidate how environmental variables impact children's dietary intake.
青少年居住的物理环境及其获取食品商店的途径可能会影响他们对水果和蔬菜的消费。这种关联可能是直接的，也可能通过心理社会变量或家庭提供的水果和蔬菜来介导。更好地了解这些关联将有助于设计新的干预措施。本研究的目的是检验距离食品店和餐馆的距离与水果和蔬菜消费之间的关系，以及心理社会变量和家庭供应的可能中介作用。
2003 年，通过食物频率问卷评估了 204 名男童子军的水果和蔬菜摄入量。参与者的地址进行了地理编码，并计算了到不同类型食品店和餐馆的距离。测量了水果和蔬菜偏好、家庭供应和自我效能。使用向后删除非显著环境和心理社会变量的回归模型。进行了中介测试。
居住在离小型食品店（便利店和药店）较远的地方与增加水果和果汁以及低脂肪蔬菜的消费有关。居住在快餐店较近的地方与增加高脂肪蔬菜和水果以及果汁的消费有关。蔬菜偏好部分中介（26%）了低脂肪蔬菜摄入量与距离最近的 SFS 之间的关系。
距离小型食品店和快餐店与男性青少年的水果和蔬菜消费有关。蔬菜偏好部分中介了低脂肪蔬菜与距离的关系。需要进一步研究阐明环境变量如何影响儿童的饮食摄入。
