Lee Bora, Kim Hyogyoo, Lee Soo-Kyung, Yoon Jihyun, Chung Sang-Jin
Department of Foods and Nutrition, Kookmin University, 77 Jeongneung-ro, Seungbuk-gu, Seoul 136-702, South Korea.
Department of Advertising and Public Relations, Dongguk University, 30 Pildong-ro 1-gil, Jung-gu, Seoul 100-175, South Korea.
Appetite. 2014 Oct;81:305-11. doi: 10.1016/j.appet.2014.06.103. Epub 2014 Jul 1.
The aim of this study was to determine the effect of television food advertising on participant food intake and risk of obesity. A total of 2419 children aged 11-13 years were selected from 118 elementary schools in South Korea. All participants completed a self-administered questionnaire with questions about height, weight, television viewing times, food preferences, and food intakes. To estimate actual exposure to food advertising, we asked participants to specify the times at which they usually watched television. We then collected data on the various types of food advertisement broadcast on five different television networks during those viewing times over the course of the previous 7 months. The amount of television watched and exposure to energy-dense/nutrient-poor (EDNP) food advertising were associated with an increased risk of being overweight or obese. Exposure to television advertising for EDNP food was also significantly associated with higher EDNP food preference and intake and lower fruit and vegetable intake. However, these relationships disappeared for all foods after adjusting for the overall amount of television watched. Although it was not possible to conclude that exposure to television advertising for EDNP food was associated with an increased risk of obesity, preference for EDNP foods, or overall food intake due to the strong comprehensive effects of television viewing time, there was a reason to believe the evidence of the effects of advertising in this study. Future longitudinal studies are needed to determine the exclusive effects of exposure to television advertising for EDNP food.
本研究的目的是确定电视食品广告对参与者食物摄入量和肥胖风险的影响。从韩国118所小学中选取了2419名11至13岁的儿童。所有参与者都完成了一份自我填写的问卷，其中包括关于身高、体重、看电视时间、食物偏好和食物摄入量的问题。为了估计实际接触食品广告的情况，我们要求参与者指明他们通常看电视的时间。然后，我们收集了在过去7个月的这些观看时间里，五个不同电视网络上播放的各类食品广告的数据。看电视的时长以及接触高能量/低营养（EDNP）食品广告与超重或肥胖风险增加有关。接触EDNP食品的电视广告也与更高的EDNP食品偏好和摄入量以及更低的水果和蔬菜摄入量显著相关。然而，在对总的看电视时长进行调整后，所有食品的这些关系都消失了。尽管由于看电视时间的强大综合影响，无法得出接触EDNP食品的电视广告与肥胖风险增加、对EDNP食品的偏好或总体食物摄入量之间存在关联的结论，但有理由相信本研究中广告效果的证据。未来需要进行纵向研究，以确定接触EDNP食品的电视广告的单独影响。
