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

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

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 dual energy x-ray absorptiometry, air displacement plethysmography, bioelectrical impedance analysis, manual anthropometry, and previously validated 3D optical scanners.

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.
• Air displacement plethysmography estimates whole body volume, fat mass, and fat-free mass of the body using variations in air pressure

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