VALIDITY OF THREE-DIMENSIONAL PHOTONIC SCANNING TECHNIQUE FOR ESTIMATING PERCENT BODY FAT
K. Shitara, H. Kanehisa, T. Fukunaga, T. Yanai, Y. Kawakami
J Frailty Aging 2013;2(4):192-197
Background: Three-dimensional photonic scanning (3DPS) was recently developed to measure dimensions of a human body surface. Objective: The purpose of this study was to explore the validity of body volume measured by 3DPS for estimating the percent body fat (%fat). Design, setting, participants, and measurement: The body volumes were determined by 3DPS in 52 women. The body volume was corrected for residual lung volume. The %fat was estimated from body density and compared with the corresponding reference value determined by the dual-energy x-ray absorptiometry (DXA). Results: No significant difference was found for the mean values of %fat obtained by 3DPS (22.2 ± 7.6%) and DXA (23.5 ± 4.9%). The root mean square error of %fat between 3DPS and reference technique was 6.0%. For each body segment, there was a significant positive correlation between 3DPS- and DXA-values, although the corresponding value for the head was slightly larger in 3DPS than in DXA. Residual lung volume was negatively correlated with the estimated error in %fat. Conclusions: The body volume determined with 3DPS is potentially useful for estimating %fat. A possible strategy for enhancing the measurement accuracy of %fat might be to refine the protocol for preparing the subject’s hair prior to scanning and to improve the accuracy in the measurement of residual lung volume.
K. Shitara ; H. Kanehisa ; T. Fukunaga ; T. Yanai ; Y. Kawakami (2013): Validity of three-dimensional photonic scanning technique for estimating percent body fat. The Journal of Frailty and Aging (JFA). http://dx.doi.org/10.14283/jfa.2013.28