Previously, expected satiety (ES) has been measured using software and two-dimensional pictures presented on a computer screen. In this context, ES is an excellent predictor of self-selected portions, when quantified using similar images and similar software. In the present study we sought to establish the veracity of ES as a predictor of behaviours associated with real foods. Participants (N=30) used computer software to assess their ES and ideal portion of three familiar foods. A real bowl of one food (pasta and sauce) was then presented and participants self-selected an ideal portion size. They then consumed the portion ad libitum. Additional measures of appetite, expected and actual liking, novelty, and reward, were also taken. Importantly, our screen-based measures of expected satiety and ideal portion size were both significantly related to intake (p<.05). By contrast, measures of liking were relatively poor predictors (p>.05). In addition, consistent with previous studies, the majority (90%) of participants engaged in plate cleaning. Of these, 29.6% consumed more when prompted by the experimenter. Together, these findings further validate the use of screen-based measures to explore determinants of portion-size selection and energy intake in humans.

译文

:以前,使用软件和在计算机屏幕上显示的二维图片来测量预期的饱腹感(ES)。在这种情况下,当使用相似的图像和相似的软件进行量化时,ES是自我选择部分的极佳预测指标。在本研究中,我们试图将ES的准确性确定为与真实食品相关的行为的预测指标。参与者(N = 30)使用计算机软件评估其ES和三种常见食物的理想部分。然后展示了一个真正的一碗食物(意大利面和酱汁),参与者自行选择了理想的份量。然后,他们随意消费了这部分。还采取了食欲,预期和实际喜好,新颖性和奖励的其他措施。重要的是,我们基于屏幕的预期饱腹感和理想部位大小的测量均与摄入量显着相关(p <.05)。相比之下,喜好的衡量指标相对较差(p> .05)。此外,与以前的研究一致,大多数(90%)参与者进行了印版清洁。其中,有29.6%的人在实验人员的提示下消耗了更多。在一起,这些发现进一步验证了基于屏幕的测量方法的使用,以探索决定人体部分尺寸选择和能量摄入的决定因素。

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