Evaluation of the Accuracy of a Computer Vision-based Tool for Assessment of Total Body Fat Percentage

Study Overview
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Brief Summary
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This research study is designed to validate the precision and accuracy of body measurement and composition results from a novel 2D imaging device that operates through a smart-phone application. Measurement references will be obtained through DXA, BodPod, BIA, manual anthropometry, and previously validated 3D optical scanners.

Detailed Description
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Participation in this study will require a single 3-hour visit to complete. Each person will be asked to arrive at PBRC wearing easily removable gym-style clothing. Upon checking in, they will first complete the informed consent process, then have their vital signs checked, and then women of child-bearing potential will also have a urine sample taken. Outpatient clinic procedures will be followed by a series of body size and composition assessments that will require an outfit of minimal clothing. Clean spandex shorts, sports bras, and lycra caps will be provided. Anthropometric measurements including hip, waist, arms, and thighs circumferences will be collected by a trained observer using a calibrated tape measure. Body shape will be measured digitally using 2D and 3D optical devices that optimize light patterns to calculate depth. Bioelectrical Impedance Analysis measures the amount of fat and lean mass in the body using electrodes positioned close to the feet and hands. Whole body dual-energy X-ray absorptiometry measures the amount of bone, muscle, and fat mass in the body using low energy X-rays. BodPod estimates whole body volume, fat mass, and fat-free mass of the body using variations in air pressure

Official Title
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Evaluation of the Accuracy of a Computer Vision-based Tool for Assessment of Total Body Fat Percentage

Conditions
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Obesity

Intervention / Treatment
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* Device: VBC


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Being either male or female Being from 21 to 80 years of age Having a body weight of less than 440 pounds Being willing to comply with the study procedures Exclusion Criteria: Being pregnant or attempting to become pregnant Having medical implants such as a pacemaker or metal joint replacements Having undergone any previous body altering procedures such as breast augmentation or amputation Having a body weight greater than 440 pounds

Ages Eligible for Study
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Minimum Age: 21 Years
Maximum Age: 80 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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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| healthy adults<br>Community dwelling and have no life-threatening conditions or diseases that would alter body composition from what is typical for their age, sex, ethnicity, and BMI. | Device: VBC<br>* Body Composition will be measured using the VBC system that takes under 60 seconds per scan. Image capture for VBC will include taking a series of four photos using a smartphone camera. Data from the camera will be downloaded to a local computer and then securely sent to the cloud for automated analysis and results generation. We will conduct two consecutive scans (image captures) for each research participant.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| percent body fat | total body | 6 months | 
| circumferences | waist, hip, upper arms, and mid-thighs | 6 months |