The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government.
Read our disclaimer for details.
ClinicalTrials.gov Identifier: NCT01719445
: November 1, 2012
Last Update Posted
: January 18, 2016
Pennington Biomedical Research Center
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
Information provided by (Responsible Party):
Corby K. Martin, Pennington Biomedical Research Center
The Primary Aim of the project is to modify the RFPM for adolescents and to address the concerns identified by the reviewers of the first grant application. We will then test the RFPM's validity (accuracy) compared to the validity of pen-and-paper food records.
Condition or disease
Comparison of Energy Intake Methods
The Primary Aim of the project is to modify the RFPM for adolescents and to address the concerns identified by the reviewers of the first grant application. We will then test the RFPM's validity (accuracy) compared to the validity of pen-and-paper food records. Our experience and the literature indicate that the RFPM is acceptable and feasible in school settings. Following modification of the RFPM and pilot testing with 4 adolescents, we will test the reliability and validity of both the RFPM and food records when used by 60 adolescents (12 to 18 years of age). During one week, participants will use the RFPM and during another week they will use food records (the order will be balanced across participants). The accuracy of each method will be examined by comparing energy and nutrient intake (collectively referred to as food intake or FI) to three gold standards: 1) doubly labeled water or DLW (energy intake only, or EIDLW), 2) a laboratory-based test meal (FILaboratory), and 3) food intake during lunch in a school cafeteria (FISchool). User-satisfaction and participant burden will also be compared between methods, and a cost-effectiveness analysis will determine if and under what conditions one method is more cost-effective than the other.
Doubly Labeled Water (DLW) [ Time Frame: 2 weeks ]
Doubly labeled water will be used to measure total daily energy expenditure (TEE) and Energy Intake.
Secondary Outcome Measures
The Remote Food Photography Method (RFPM) [ Time Frame: 7 days ]
In brief, adolescents will be trained to use a Smartphone and the Food Image App to capture images of their food selection and plate waste and to send the data packets to Food Photo II via the wireless network.
Other Outcome Measures:
Pen-and-paper Food Records [ Time Frame: 7 days ]
Participants will be instructed how to keep a food record and estimate portion size during a session at the Center. Participants will also receive a packet containing the food protocol outline, food record form, guide to portion sizes, guidelines for description of foods, and tips for recording food intake. Participants will be instructed to record everything they eat or drink, recording the food item, portion size, time of consumption, and meal designation.
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.
Ages Eligible for Study:
12 Years to 18 Years (Child, Adult)
Sexes Eligible for Study:
Accepts Healthy Volunteers:
50 adolescents will be recruited.
boy or girl of any race
age 12 to 18 years, inclusive
willing to use the RFPM for one week and pen-and-paper food records for one week
willing to complete one laboratory-based food test during week 3
willing to use the RFPM and food records during the laboratory-based test.
-weight unstable (>1.1 pounds weight change in one week based on regressed daily body weights).