Department of Nutritional Sciences, University of Toronto, Ontario M5S 3E2, Canada.
Pediatr Res. 2011 Nov;70(5):513-7. doi: 10.1203/PDR.0b013e31822d783e.
The effect of television viewing (TVV) and pubertal status of 9- to 14-y-old girls on mealtime food intake (FI) after a premeal glucose drink was determined. On four separate mornings, girls randomly received equally sweetened drinks containing Sucralose (control) or glucose (1.0 g/kg body weight) in 250 mL of water 2 h after a standardized breakfast. FI from an ad libitum pizza meal was measured 30 min later with or without TVV. Appetite was measured at 15 min intervals to lunch and postmeal. TVV at mealtime had no effect on FI, however, glucose suppressed FI more with no TVV compared with TVV (24 versus 10%, p < 0.001), primarily because of its effect in peripubertal girls (p < 0.028). In postpubertal girls (n = 8), glucose reduced FI by ~27% in both the no TVV and TVV conditions, but in peripubertal girls (n = 17), reduction in FI was 22% without TVV and only 1% while TVV. Appetite correlated with FI at 30 min only in postpubertal girls. TVV at mealtime reduced caloric compensation after consumption of the glucose drink in peripubertal, but not postpubertal, girls, with no effect on mealtime FI. (Clinical trial number NCT01025687.)
研究了 9 至 14 岁女孩观看电视（TV）和青春期状态对餐前葡萄糖饮料后进餐时食物摄入量（FI）的影响。在四个不同的早晨，女孩们随机接受了含有等量甜味剂蔗糖素（对照）或葡萄糖（1.0 g/kg 体重）的 250 毫升水，2 小时后标准化早餐。30 分钟后，在有无电视的情况下，女孩们可自由享用比萨饼。在午餐和餐后，每 15 分钟测量一次食欲。在用餐时看电视对 FI 没有影响，但与看电视相比，葡萄糖在没有电视时更能抑制 FI（24%比 10%，p<0.001），主要是因为它对青春期前女孩的影响（p<0.028）。在青春期后女孩（n=8）中，葡萄糖在无电视和有电视两种情况下均使 FI 降低约 27%，但在青春期前女孩（n=17）中，无电视时 FI 降低 22%，而有电视时仅降低 1%。食欲仅在青春期后女孩中与 30 分钟时的 FI 相关。在用餐时看电视可减少青春期前女孩在饮用葡萄糖饮料后的热量补偿，但对进餐时 FI 无影响。（临床试验编号 NCT01025687）。
