Evaluation of a Rotary Laser Body Scanner for Body Volume and Fat Assessment

    Volume 39, Issue 1 (January 2011)

    ISSN: 0090-3973

    CODEN: JTEOAD

    Published Online: 1 July 2010

    Page Count: 7


    Pepper, M. Reese
    Dept. of Nutritional Sciences, The Univ. of Texas at Austin, Austin, TX

    Freeland-Graves, Jeanne H.
    Dept. of Nutritional Sciences, The Univ. of Texas at Austin, Austin, TX

    Yu, Wurong
    School of Human Ecology, The Univ. of Texas at Austin, Austin, TX

    Stanforth, Philip R.
    Dept. of Kinesiology and Health Education, The Univ. of Texas at Austin, Austin, TX

    Xu, Bugao
    School of Human Ecology, The Univ. of Texas at Austin, Austin, TX

    (Received 12 November 2009; accepted 26 May 2010)

    Abstract

    This paper reports the evaluation tests on the reliability and validity of a three-dimensional (3D) laser body scanner for the estimation of body volume and percent fat. Repeated measures of body imaging were performed for reproducibility analysis. The validity of the instrument was assessed by the comparison of the measures of body volume by imaging to hydrodensitometry, and body fat was compared to hydrodensitometry and dual energy X-ray absorptiometry. Reproducibility analysis showed little difference between within-subjects measurements of volume (intraclass correlation coefficient (ICC)≥0.99 and p<0.01). Body volume estimations by laser body scanner and hydrodensitometry were strongly related (r=0.99 and p<0.01), and agreement was high (ICC=0.99 and p<0.01). Measurements of percent body fat also agreed strongly with each other between methods (ICC=0.86 and p<0.01), and mean percent fat estimates by body imaging did not differ from criterion methods (p>0.05). These findings indicate that the 3D laser body scanner is a reliable and valid technique for the estimation of body volume. Furthermore, body imaging is an accurate measure of body fat, as compared to dual energy X-ray absorptiometry. This new instrument is promising as a quick, simple to use, and inexpensive method of body composition analysis.


    Paper ID: JTE102871

    DOI: 10.1520/JTE102871

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    Author
    Title Evaluation of a Rotary Laser Body Scanner for Body Volume and Fat Assessment
    Symposium , 0000-00-00
    Committee E31