Abood Doris A, Black David R, Coster Daniel C
Department of Nutrition, Food & Exercise Sciences, Florida State University, Tallahassee, Florida, USA.
J Nutr Educ Behav. 2008 May-Jun;40(3):168-74. doi: 10.1016/j.jneb.2007.02.009.
A school-based nutrition education minimal intervention (MI) was evaluated.
The design was experimental, with random assignment at the school level.
Seven schools were randomly assigned as experimental, and 7 as delayed-treatment.
The experimental group included 551 teens, and the delayed treatment group included 329 teens.
The minimal intervention was Present and Prevent, a commercially available PowerPoint program presented in two 30-minute time slots over 1 week.
The dependent variables were nutrition knowledge, attitudes, peer and family influences, behavioral intentions, and program satisfaction. The independent variable was group assignment.
A matched-pairs and 2-sample t test were used respectively to assess within-group and between-group changes.
Significant experimental posttest improvements occurred in the following: knowledge (P < .001); intention to maintain a healthy body weight because of importance to friends (P < .001); and intention to eat fewer fried foods, eat fewer sweets, look more at food labels, and limit TV watching (all P < .001). Program satisfaction measures were significantly associated with each of the healthy weight maintenance behavioral intentions.
The MI teen obesity prevention program made an impact on nutrition knowledge and positive behavioral intentions in only 2 classroom sessions and was well received by participants.
评估一项基于学校的营养教育最小干预（MI）措施。
采用实验性设计，在学校层面进行随机分配。
七所学校被随机分配为实验组，七所作为延迟治疗组。
实验组包括551名青少年，延迟治疗组包括329名青少年。
最小干预措施是“呈现与预防”，这是一个可商购的PowerPoint程序，在1周内分两个30分钟时间段进行展示。
因变量为营养知识、态度、同伴和家庭影响、行为意图及项目满意度。自变量为分组。
分别使用配对和双样本t检验来评估组内和组间变化。
实验后测在以下方面有显著改善：知识（P <.001）；因对朋友重要而保持健康体重的意图（P <.001）；以及减少油炸食品摄入、减少甜食摄入、更多查看食品标签和限制看电视的意图（均P <.001）。项目满意度测量与每项健康体重维持行为意图均显著相关。
MI青少年肥胖预防项目仅通过2节课堂教学就对营养知识和积极的行为意图产生了影响，且受到参与者的好评。
