Bellissimo Nick, Pencharz Paul B, Thomas Scott G, Anderson G Harvey
Department of Nutritional Sciences, Faculty of Medicine, University of Toronto, Toronto, Ontario M5S 3E2, Canada.
Pediatr Res. 2007 Jun;61(6):745-9. doi: 10.1203/pdr.0b013e3180536591.
Television viewing (TVV) is considered a contributing factor to the development of childhood obesity yet it is unclear whether obesity results, in part, from increased energy intake during TVV. The objective of this study was to determine the effect of TVV on food intake (FI) of boys at a meal and its effect on caloric compensation at the test meal after a premeal glucose drink. On four separate mornings and in random order, boys received equally sweetened preloads containing Splenda sucralose or glucose [1.0 g/kg body weight (BW)] in 250 mL of water 2 h after a standard breakfast. Food intake from a pizza meal was measured 30 min later with or without TVV. Both preload treatment (p < 0.01) and TVV (p < 0.001) affected FI (kcal). TVV increased lunchtime FI by an average of 228 kcal. Glucose suppressed FI in the no TVV condition compared with control, but the effect was not statistically significant during TVV. Body composition and subjective appetite scores were positively associated with FI at the test lunch. In conclusion, TVV while eating a meal contributes to increased energy intake by delaying normal mealtime satiation and reducing satiety signals from previously consumed foods.
看电视被认为是儿童肥胖症发展的一个促成因素，但尚不清楚肥胖是否部分源于看电视期间能量摄入的增加。本研究的目的是确定看电视对男孩进餐时食物摄入量（FI）的影响，以及对餐前饮用葡萄糖饮料后测试餐热量补偿的影响。在四个不同的早晨，男孩们在标准早餐2小时后，随机接受含有三氯蔗糖或葡萄糖[1.0克/千克体重（BW）]的等量甜味预负荷，溶于250毫升水中。30分钟后，测量有无看电视情况下的披萨餐食物摄入量。预负荷处理（p < 0.01）和看电视（p < 0.001）均影响食物摄入量（千卡）。看电视使午餐时间的食物摄入量平均增加228千卡。与对照组相比，葡萄糖在不看电视的情况下抑制了食物摄入量，但在看电视期间这种影响无统计学意义。身体成分和主观食欲评分与测试午餐时的食物摄入量呈正相关。总之，进餐时看电视会延迟正常进餐时的饱腹感，并减少先前摄入食物的饱腹感信号，从而导致能量摄入增加。
