Adolescents in the United States can identify familiar foods at the time of consumption and when prompted with an image 14 h postprandial, but poorly estimate portions.
Adolescents in the United States can identify familiar foods at the time of consumption and when prompted with an image 14 h postprandial, but poorly estimate portions.
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DOI：
10.1017/s1368980010003794
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发表时间：
2011-07
影响因子：
3.2
通讯作者：
Boushey CJ
中科院分区：
文献类型：
--
作者：
Schap TE;Six BL;Delp EJ;Ebert DS;Kerr DA;Boushey CJ
评估青少年辨别食物的能力和估计所消费食物的份量，以便为手机食物记录(MpFR)的发展提供信息。数据来自两个青少年样本(11-18岁)。样本1中的青少年参加了一次午餐(N 63)，在63名青少年中有55人(87%)第二天早上回来吃早餐。样本2志愿者在24小时内接受了所有的食物和零食。在用餐时间，样本1的参与者被要求写下食物的名称。样本2参与者在餐后10-14小时的食物图像中识别食物。样本2中的青少年也估计了他们早餐食物和零食的份量。样本1正确识别了38种食物中的30种，所有被错误识别的食物都在正确的主要食物组中。对于样本2，13种食物中的11种被100%正确识别。使用各种测量描述符，一半的早餐和休闲食品至少有一个份量估计在真实量的10%以内。结果表明，青少年能够正确地识别熟悉的食物，他们可以在餐后14·5小时内看着自己的食物图像并识别图像中的食物。本研究的结果不仅为mpFR的发展提供了信息，也为在研究和临床环境中使用进食场合的数字图像提供了强有力的证据。
To evaluate adolescents' abilities to identify foods and estimate the portion size of foods consumed in order to inform development of the mobile telephone food record (mpFR). Data were collected from two samples of adolescents (11–18 years). Adolescents in sample 1 participated in one lunch (n 63) and fifty-five of the sixty-three adolescents (87%) returned for breakfast the next morning. Sample 2 volunteers received all meals and snacks for a 24 h period. At mealtime, sample 1 participants were asked to write down the names of the foods. Sample 2 participants identified foods in an image of their meal 10–14 h postprandial. Adolescents in sample 2 also estimated portion sizes of their breakfast foods and snacks. Sample 1 identified thirty of the thirty-eight food items correctly, and of the misidentified foods all were identified within the correct major food group. For sample 2, eleven of the thirteen food items were identified correctly 100% of the time. Half of the breakfast and snack foods had at least one portion size estimate within 10 % of the true amount using a variety of measurement descriptors. The results provide evidence that adolescents can correctly identify familiar foods and they can look at an image of their meal and identify the foods in the image up to 14·5 h postprandial. The results of the present study not only inform the development of the mpFR but also provide strong evidence of the use of digital images of eating occasions in research and clinical settings.