How Willing Are Adolescents to Record Their Dietary Intake? The Mobile Food Record
How Willing Are Adolescents to Record Their Dietary Intake? The Mobile Food Record
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DOI：
10.2196/mhealth.4087
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发表时间：
2015-04-01
影响因子：
5
通讯作者：
Delp, Edward J.
中科院分区：
文献类型：
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作者：
Boushey, Carol Jo;Harray, Amelia J.;Delp, Edward J.
背景：准确评估儿童和青少年的饮食可能存在问题。使用诸如旨在通过设备嵌入式摄像头拍摄的图像来捕捉就餐场合所消耗的食物和饮料的移动应用程序等技术，可能会解决从青少年收集准确饮食摄入数据的许多障碍。 目的：本研究的目的是评估青少年使用新型移动食物记录（mFR）在就餐场合拍摄食物和饮料图像的意愿，并评估 mFR 应用程序的用户确认组件（称为“审核过程”）的可用性。方法：混合方法本研究使用了定量和定性相结合的方案。参加夏令营的青少年（11-15岁）被招募来参加这项研究。首先，参与者被要求使用 iPhone 上运行的 mFR 应用程序连续 2 天拍摄作为正餐和零食食用的食物和饮料的图像，并记录拍摄的图像数量。接下来是焦点小组会议，以评估可用性，并按内容和主题进行分析。使用mFR后，使用有声思考方法来评估mFR方法审查系统识别食品（即审查过程）的可用性。所有活动结束时都会进行可用性调查问卷。结果：mFR 被 24 名男孩和 17 名女孩 (n=41) 中的大多数人接受，但根据性别和饮食场合而有所不同。女孩比男孩更有可能拍摄自己就餐场景的照片（Fisher 精确检验，P=.03）。参与者更有可能拍摄早餐（90%，36/40）和午餐（90%，72/80），而最不可能拍摄下午和晚上的小吃，分别为 54%（43/80）和 40%（32/80）。焦点小组关于使用 mFR 的主要主题是游戏、奖励以及需要更多地了解他们使用该应用程序的原因。可用性调查问卷的结果表明，包含游戏组件对于提高使用 mFR 的意愿非常重要，并且绝大多数参与者表示愿意使用 mFR 7 天或更长时间。发现图像审查过程很容易使用，除了屏幕上重叠标记的一些混乱。结论：青少年对 mFR 的体验和反馈强调了增加训练、提醒、娱乐（例如游戏）和练习使用设备捕获完整饮食摄入量作为其积极生活方式的一部分的重要性。
Background: Accurately assessing the diets of children and adolescents can be problematic. Use of technologies, such as mobile apps designed to capture food and beverages consumed at eating occasions with images taken using device-embedded cameras, may address many of the barriers to gathering accurate dietary intake data from adolescents.Objective: The objectives of this study were to assess the willingness of adolescents to take images of food and beverages at their eating occasions using a novel mobile food record (mFR) and to evaluate the usability of the user confirmation component of the mFR app, referred to as the "review process."Methods: Mixed methods combining quantitative and qualitative protocols were used in this study. Adolescents (11-15-year olds) attending a summer camp were recruited to participate in the study. First, the participants were asked to take images of foods and beverages consumed as meals and snacks for 2 consecutive days using the mFR app running on an iPhone and the number of images taken was noted. This was followed by focus group sessions to evaluate usability, which was analyzed by content and themes. After using the mFR, a think-aloud method was used to evaluate the usability of the mFR method for reviewing system-identified foods (ie, the review process). A usability questionnaire was administered at the end of all activities.Results: The mFR was accepted by the majority of the 24 boys and 17 girls (n=41) but varied according to gender and eating occasion. Girls were significantly more likely than boys to capture images of their eating occasions (Fisher exact test, P=.03). Participants were more likely to take images of their breakfasts (90%, 36/40) and lunches (90%, 72/80) and least likely to capture afternoon and evening snacks, 54% (43/80) and 40% (32/80), respectively. The major themes from the focus groups with regard to using the mFR were games, rewards, and the need to know more about why they were using the app. Results of the usability questionnaire indicated that including a game component would be important to increase willingness to use the mFR, and a high majority of the participants indicated a willingness to use the mFR for 7 days or more. The image review process was found to be easy to use except for some confusion with overlapping markers on the screen.Conclusions: The adolescents' experiences with and feedback about the mFR highlighted the importance of increased training, reminders, entertainment (eg, games), and training with practice in using the device to capture complete dietary intake as part of their active lifestyles.