School of Nutrition, Ryerson University, Toronto, ON M5B 2K3, Canada.
Faculty of Kinesiology and Health Studies, University of Regina, Regina, SK S4S 0A2, Canada.
Nutrients. 2022 Feb 1;14(3):636. doi: 10.3390/nu14030636.
Paper-based motivation-to-eat visual analogue scales (VASs) developed for adults are widely used in the pediatric age range. The VAS is comprised of four domains: hunger, fullness, desire to eat, and prospective food consumption. The purpose of the present study was to determine agreement between the traditional paper-based VAS and a novel digital VAS (with and without images), as well as the novel digital VAS's predictive validity for subsequent food intake (FI) in 9-14-year-old children and adolescents. Following an overnight fast and 3 h after consuming a standardized breakfast at home, children and adolescents ( = 17) completed three different VAS instruments (VAS, VAS, VAS) in a randomized order at five time-points: 0 min (baseline), 5 min (immediately after consuming a 147 kcal yogurt treatment), 20 min, 35 min (immediately before an ad libitum lunch), and 65 min (immediately post ad libitum lunch). All three instruments were comparable, as shown by low bias and limits of agreement on Bland-Altman plots, moderate to excellent intraclass correlation coefficients for all domains at all time-points (ICC = 0.72-0.98), and no differences between the incremental area under the curve for any of the domains. All three instruments also showed good predictive validity for subsequent FI, with the strongest relationship observed immediately before the ad libitum lunch ( = 0.56-0.63). There was no significant association between subjective thirst and water intake, except with VAS at baseline (r = 0.49, = 0.046). In conclusion, the present study suggests that a novel image-based digital VAS evaluating motivation-to-eat is interchangeable with the traditional paper-based VAS, and provides good predictive validity for next-meal FI in 9-14-year-old normal weight children and adolescents.
基于纸张的进食动机视觉模拟量表（VAS）已广泛应用于儿科年龄段，专为成年人设计。VAS 由四个领域组成：饥饿感、饱腹感、进食欲望和预期食物摄入量。本研究的目的是确定传统纸质 VAS 与新型数字 VAS（有和没有图像）之间的一致性，以及新型数字 VAS 对 9-14 岁儿童和青少年下一餐食物摄入量（FI）的预测有效性。在禁食一夜和在家中吃完标准化早餐 3 小时后，儿童和青少年（n=17）在五个时间点以随机顺序完成三种不同的 VAS 仪器（VAS、VAS、VAS）：0 分钟（基线）、5 分钟（吃完 147 千卡酸奶后立即）、20 分钟、35 分钟（在自由进食午餐前立即）和 65 分钟（自由进食午餐后立即）。所有三种仪器都具有可比性，Bland-Altman 图上的低偏倚和一致性界限、所有领域在所有时间点的中等至极好的组内相关系数（ICC=0.72-0.98）以及任何领域的增量曲线下面积均无差异表明了这一点。所有三种仪器对随后的 FI 也具有良好的预测有效性，与自由进食午餐前立即观察到的关系最强（=0.56-0.63）。主观口渴和水摄入量之间除了与基线时的 VAS 相关（r=0.49，=0.046）外，没有显著关联。总之，本研究表明，评估进食动机的新型基于图像的数字 VAS 与传统纸质 VAS 具有可互换性，并为正常体重的 9-14 岁儿童和青少年下一餐的 FI 提供了良好的预测有效性。
