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Validation of a Stereo Vision Body Imaging System for Assessment of Obesity
Author(s) -
Pepper Reese,
FreelandGraves Jeanne,
Xu Bugao,
Yu Wurong
Publication year - 2009
Publication title -
the faseb journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.709
H-Index - 277
eISSN - 1530-6860
pISSN - 0892-6638
DOI - 10.1096/fasebj.23.1_supplement.735.21
Subject(s) - plethysmograph , body mass index , volume (thermodynamics) , medicine , body fat percentage , nuclear medicine , physics , quantum mechanics
Current methods to determine body fat are limited by expense and bulkiness of the devices. The purpose of this research was to validate a recently developed, portable stereo vision imager for evaluation of body fat. Measurement by this 8‐camera stereo vision system was compared to hydrodensitometry and air‐displacement plethysmography in 77 Caucasians and Hispanics (33.51±1.11 yr). Participants fasted for 4 hours before undergoing measurement of body volume. The mean Body Mass Index of the subjects was 27.60±0.60, ranging from 18.6 to 39.8 kg/m 2 . Body volume measurement corrected for thoracic gas volume after stereo vision or air‐displacement plethysmography and residual volume with hydrodensitometry were applied to the Siri equation to determine percent body fat. Estimates of body volume were closely related between stereo vision, air‐displacement plethysmography, and hydrodensitometry (means 76.42±2.05, 77.95±2.09, and 77.33±2.08, respectively, r>0.997, p<0.01). Furthermore, percent body fat results had a strong relationship between methods (r>.756, p<0.01). These results suggest that this stereo vision imager is a valid measure of body volume and percent fat. Supported by NIH 1 R21 DK081206‐01. Grant Funding Source NIH NIDDK