A novel method to remotely measure food intake of free-living individuals in real time: the remote food photography method.
A novel method to remotely measure food intake of free-living individuals in real time: the remote food photography method.
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DOI：
10.1017/s0007114508027438
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发表时间：
2009-02
影响因子：
3.6
通讯作者：
Anton, Stephen D.
中科院分区：
文献类型：
--
作者：
Martin, Corby K.;Han, Hongmei;Coulon, Sandra M.;Allen, H. Raymond;Champagne, Catherine M.;Anton, Stephen D.
这项研究的目的是报告远程食物摄影方法(RFPM)的首次可靠性和有效性测试，该方法由具有数据传输能力的可拍照手机组成。参与者拍摄食物选择和餐盘垃圾的照片，并将其传输给研究人员/临床医生进行分析。在两项先导性研究之后，成年参与者(N=52，20≤体重指数≤35)被随机分配到进餐组或外卖组。连续3天测量能量摄入量(EI)。就餐组在实验室吃午餐和晚餐。外卖组在实验室吃午餐，在自由生活的条件下吃晚餐(参与者收到了一个装有预称重食物的冰箱，第二天早上他们还回来了)。能量摄入量用RFPM和直接称量食物来测量。在实验室和自由生活条件下对RFPM进行了测试。信度检验在三天内进行，效度检验通过比较直接加权的EI和使用Bland-Altman分析的RFPM估计的EI值来检验。RFPM在实验室(r=.62，p<；.0001)和自由生活(r=.68，p<；.0001)条件下，在三天内产生了可靠的Ei估计。在实验室和自由生活条件下，加权的EI与估计的EI与RFPM高度相关(r‘s>；.93，p<；.0001)。在两个基于实验室的有效性测试中，RFPM低估了EI-4.7%(p=.046)和-5.5%(p=.076)。在自由生活条件下，RFPM低估了EI-6.6%(p=.017)。偏见并不因体重或年龄而异。RFPM是一种很有前途的精确测量自由生活人群EI的新方法。与自我报告方法相比，与该方法相关的误差较小。
The aim of this study was to report the first reliability and validity tests of the Remote Food Photography Method (RFPM), which consists of camera-enabled cell phones with data transfer capability. Participants take and transmit photographs of food selection and plate waste to researchers/clinicians for analysis. Following two pilot studies, adult participants (N=52, 20≤BMI≤35) were randomly assigned to the dine-in or take-out group. Energy intake (EI) was measured for three days. The dine-in group ate lunch and dinner in the laboratory. The take-out group ate lunch in the laboratory and dinner in free-living conditions (participants received a cooler with pre-weighed food that they returned the following morning). Energy intake was measured with the RFPM and by directly weighing foods. The RFPM was tested in laboratory and free-living conditions. Reliability was tested over three days and validity was tested by comparing directly weighed EI to EI estimated with the RFPM using Bland-Altman analysis. The RFPM produced reliable EI estimates over three days in laboratory (r=.62, p<.0001) and free-living (r=.68, p<.0001) conditions. Weighed EI correlated highly with EI estimated with the RFPM in laboratory and free-living conditions (r’s>.93, p<.0001). In two laboratory-based validity tests, the RFPM underestimated EI by -4.7% (p=.046) and -5.5% (p=.076). In free-living conditions, the RFPM underestimated EI by -6.6% (p=.017). Bias did not differ by body weight or age. The RFPM is a promising new method for accurately measuring the EI of free-living people. Error associated with the method is small compared to self-report methods.