Dietary Assessment Study Via Digital Images

April 1, 2025 updated by: Hollie Raynor, The University of Tennessee, Knoxville

Validation Study of a Passive Image-Assisted Dietary Assessment With Automated Image Analysis Process

The purpose of this investigation is to validate a passive image-assisted dietary assessment method using images taken by Sony Smarteyeglass and an automatic image analysis software, DietCam, to identify food items and estimate portion sizes. Participants will be randomized into one of the two orders of meals (Order 1 and 2). In each meal, participants will be given a meal that includes a regular-shaped single food (i.e., cookie), an irregular-shape single food (i.e., ice cream), a regular-shaped mixed food (i.e., sandwich), and irregular-shaped mixed food (i.e., pasta dish).

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

All participants will be asked to come to Healthy Eating and Activity Laboratory for 1, 30-minute screening session, and then for 2, 40-minute meal sessions, with approximately one week occurring between each session. Sessions will be scheduled between 11:00am and 5:00pm, Monday to Friday. During the screening session, interested participants will sign the consent form. After signing the consent from, eligibility will be confirmed by taking height and weight measures. Participants will also be given questionnaires related to demographics. Prior to the start of the first meal session, eligible participants will be randomized to one of the two orders (Order 1 and 2), using a random numbers table. Participants will be instructed for the meal sessions to stop eating a minimum of two hours prior to the scheduled meal sessions and only consume water during that period.

During both meal sessions, instructions on how to use Sony Smarteyeglass will be provided to participants. These instructions will include how to wear and use the eyeglasses. Participants will be instructed that, after putting on the Smarteyeglass, to initiate the recording via the controller of the Sony Smarteyeglass. After the recording is initiated and prior to starting to eat, participants will be instructed to look at each provided food at the table. Then, participants will also be instructed to turn their head toward the left shoulder, look at each food from the side, and then repeat the same step for turning their head toward the right shoulder. Participants will be asked to start the meal by taking one bite of each provided food. For the first bite of each food, participants will be instructed to hold the food, either in their hand or on a fork or spoon (depending on the food), approximately 12 inches in front of the eyeglasses and to look at the food. Following taking the first bite of each provided food, participants will be instructed to eat normally until satisfied. Participants will be given 30 minutes to eat. The investigator will leave the room while the participant is eating. The investigator will check in with participants every 10 minutes. At the end of 30 minutes, participants will be instructed to again look at each provided food on the table at three different angles (looking straight at each food, from left side and the right side) following the exact same procedure at the beginning of the meal.

On the day following each meal session, participants will be called to complete a 24-hour dietary recall, which will take 20 minutes to complete. Instructions will be provided to participants at the end of each meal session about how to complete the dietary recall and a two-dimensional visual aid will be provided to aid participants in estimating the consumed portions for each food and beverage item consumed.

The second meal session will follow the same procedure as the first session. At the end of second meal session, participants will be asked to complete a questionnaire to provide feedback on their use of the Sony Smarteyeglass.

For the first and second meal session, the meals will contain foods that are categorized into two food shapes (Regular and Irregular) and two food complexities (Single food and Mixed food). Each meal will contain four foods with the four foods representing the four potential food categories (regular-shaped single food, irregular-shaped single food, regular-shaped mixed food, irregular-shaped mixed food). Along with the four foods, participants will be given 20oz of water in each meal session. Foods will be weighed prior to being provided to participants and the amount provided to participants will be within +/- 3g of the amount calculated. Mixed foods will be broken down into their individual food components and measured. Each meal will provide approximately 50% of daily estimated energy need for each sex. The Estimated Calories Needed Per Day for males and females aged 19 to 35 years are 2450 kcal/day and 1900 kcal/day, respectively. Thus, each meal will provide approximately 1225 kcal for males and 950 kcal for females. Each food will provide approximately 25% of the energy for each meal.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
30

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • Tennessee
      • Knoxville, Tennessee, United States, 37996
        • Healthy Eating and Activity Laboratory, University of Tennessee

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years to 65 years (Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria:

  • between the ages of 18 and 65 years;
  • body mass index (BMI) 18.5 to 24.9 kg/m2;
  • no food allergies/intolerance to foods used in the investigation;
  • report not having a dietary plan or dietary restrictions that prevents consumption of the foods used in the investigation;
  • report a favorable preference for the foods served in the meal, with participants rate each food item 3 on a Likert scale during the phone screen;
  • able to complete all two meal sessions within four weeks of the screening session;
  • are not legally blind without corrected lenses; and
  • are able to eat a meal while wearing the Sony Smarteyeglass.

Exclusion Criteria:

  • wear electronic medical devices such as pacemakers and implantable defibrillators

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Screening
  • Allocation: Randomized
  • Interventional Model: Factorial Assignment
  • Masking: Single

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Meal Order 1
Meal A will be served to participant in meal session 1 and Meal B in meal session 2.
Device: Dietary Assessment of Meal A using images taken by Sony Smarteyeglass

Participant will be wearing Sony Smarteyeglass to record digital images while eating meal A in the laboratory

Meal A:

Turkey and Provolone Cheese Sandwich [whole wheat bread 52g(female & male), Turkey 70g(female) & 133g(male), Provolone cheese 23g(female & male), tomato 50g(female & male), lettuce 45g(female & male)]; Chicken and wild rice [chicken 98g(female & male), wild rice 71g(female) & 107g(male)]; chocolate chips cookies [44g(female) & 60.5g(male)]; potato chips [39g(female) & 52g(male)].

Device: Dietary Assessment of Meal B using Images taken by Sony Smarteyeglass

Participant will be wearing Sony Smarteyeglass to record digital images while eating meal B in the laboratory

Meal B:

Ham & Cheddar cheese wrap [Tortilla 45g(female & male), Ham deli 76g(female) & 103g(male), cheddar cheese 21g(female) & 32g(male), Spring Mix 36g(female & male), Fat Free ranch dressing 29g(female & male)]; Pasta with broccoli and Alfredo sauce [Pasta 91g(female) & 121g(male), Broccoli 66g(female & male), Alfredo sauce 38g(female) & 50g(male)]; Chocolate Ice-cream [107g(female), 138g(male)]; Red seedless grapes [365g (female), 471g(male)].
Experimental: Meal Order 2
Meal B will be served to participant in meal session 1 and Meal A in meal session 2.
Device: Dietary Assessment of Meal A using images taken by Sony Smarteyeglass

Participant will be wearing Sony Smarteyeglass to record digital images while eating meal A in the laboratory

Meal A:

Turkey and Provolone Cheese Sandwich [whole wheat bread 52g(female & male), Turkey 70g(female) & 133g(male), Provolone cheese 23g(female & male), tomato 50g(female & male), lettuce 45g(female & male)]; Chicken and wild rice [chicken 98g(female & male), wild rice 71g(female) & 107g(male)]; chocolate chips cookies [44g(female) & 60.5g(male)]; potato chips [39g(female) & 52g(male)].

Device: Dietary Assessment of Meal B using Images taken by Sony Smarteyeglass

Participant will be wearing Sony Smarteyeglass to record digital images while eating meal B in the laboratory

Meal B:

Ham & Cheddar cheese wrap [Tortilla 45g(female & male), Ham deli 76g(female) & 103g(male), cheddar cheese 21g(female) & 32g(male), Spring Mix 36g(female & male), Fat Free ranch dressing 29g(female & male)]; Pasta with broccoli and Alfredo sauce [Pasta 91g(female) & 121g(male), Broccoli 66g(female & male), Alfredo sauce 38g(female) & 50g(male)]; Chocolate Ice-cream [107g(female), 138g(male)]; Red seedless grapes [365g (female), 471g(male)].

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Weighed Food Intake
Time Frame: Meal session 1 and 2 within 4 weeks of initial screening session
Before and after each meal session, each food items will be weighed to the nearest tenth of a gram using an electronic food scale. Assessing the weight change of food intake.
Meal session 1 and 2 within 4 weeks of initial screening session
24-hour Dietary Recall
Time Frame: The following day of meal session 1 and 2 within 4 weeks of initial screening session
On the following day of each meal session, the investigator will ask the participant to recall their dietary intake by having the participant reporting all foods and beverages consumed and the time in which they consumed these items within the past 24 hours. Participants will be asked what time of day the foods and beverages were consumed and will be shown two-dimensional food shapes to help with estimating portion sizes. Only dietary intake for the meal session will be entered into NDS-R to convert to commonly used measurements.
The following day of meal session 1 and 2 within 4 weeks of initial screening session

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Sony Smarteyeglass
Time Frame: During Meal session 1 and 2 within 4 weeks of initial screening session
Digital images will be recorded during each meal session using Sony Smarteyeglass. Number of blurred images and times that Sony Smarteyeglass fail to capturing images will be documented.
During Meal session 1 and 2 within 4 weeks of initial screening session
Participants' Feedback
Time Frame: Meal session 2 within 4 weeks of initial screening session
At the end of last meal session, participants will be asked to complete a questionnaire regarding their experience on using Sony Smarteyeglass. A total of six structured questions will be included in the questionnaire and each question will be associated with an open-ended question. Structured questions will consist of a five-scale rating regarding ease of use, clearness of instructions, satisfaction, likelihood, and comfortableness. Percentages of participants answering in responses to each structured question will be tabulated and open-ended questions will be summarized.
Meal session 2 within 4 weeks of initial screening session

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
The University of Tennessee, Knoxville

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Tsz-Kiu Chui, University of Tennessee

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
August 3, 2017

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
August 3, 2018

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
June 3, 2020

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
August 10, 2017

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
August 26, 2017

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
August 30, 2017

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
April 8, 2025

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
April 1, 2025

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
April 1, 2025

More Information

Terms related to this study

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • UTK IRB-17-03829-XP

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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