Novel Mobile Application to Assess Dietary Information

Study Overview
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Brief Summary
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The study will assess the accuracy of food capture methods using a novel mobile application. This will be done by comparing the energy and nutrient content of reported foods against those of foods actually consumed (i.e., reported vs actual). Two methods of using the application will be tested: During each eating occasion to report foods and amounts consumed By taking photographs of every food consumed, using the camera functionality of the mobile application and using the application the following day (according to the availability of the study subjects) to report foods and amounts consumed. This is to be consistent with the concept of a 24-hour dietary recall. One group will use a standard 24-hour dietary recall method.

Official Title
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Evaluation of a Novel Mobile Application to Assess Dietary Information

Conditions
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Dietary Assessment

Intervention / Treatment
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* Other: subjects will install a mobile app for use


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Generally healthy men and women 18-65 years of age Eats a wide variety of foods from all food groups 18 ≤ body mass index (BMI) < 30 kg/m2 Ability to read and write in English iPhone (iOS 11 or higher) or Android phone (6 or higher) user willing to download the mobile application Exclusion Criteria: Presence of active disease at screening that would prevent normal dietary intake and/or would result in weight loss (irritable bowel syndrome, Crohn's disease, celiac disease, etc.) Medical complications or chronic illness that would prevent full participation (e.g., active cancer) Pregnant or lactating women Diagnosed eating disorder Vegetarian Special dietary requirements or severe allergies that prevent the consumption of major food groups (e.g., gluten free, lactose free, Halal) Diagnosis of a mental health condition that has not been stable within the past 6 months Current or previous experience with dietary data collection or analysis Concurrent participation in another research study at any point during the study Availability and access to a tablet device (iPad, Android) only Shift workers Plan to partake in vigorous physical training/ exercise during the study period (e.g., training for or running a marathon)

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 65 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Other
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Other: US Healthy diet<br>Subjects will install a mobile app for use and will be randomly assigned to a healthy diet. | Other: subjects will install a mobile app for use<br>* novel mobile application<br>|
| Other: Vegetarian diet<br>Subjects will install a mobile app for use and will be randomly assigned to a vegetarian diet. | Other: subjects will install a mobile app for use<br>* novel mobile application<br>|
| Other: Mediterranean diet<br>Subjects will install a mobile app for use and will be randomly assigned to a Mediterranean diet. | Other: subjects will install a mobile app for use<br>* novel mobile application<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Energy and nutrient content captured on the mobile application | During each eating occasion to report foods and amounts consumed | Day 1 intakes recorded on application after meals | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Energy and nutrient content captured on the mobile application by taking photographs of food consumed | During each eating occasion to report foods and amounts consumed | Day 1 intakes photographed on application after meals | 
| Assess whether food capture using the mobile application is comparable with a conventional 24-hour recall. | Use of application for food capture versus 24 hour dietary recall in reporting foods and amounts consumed | Day 1 intakes will be reviewed by recall method |