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Shepherd Research Lab

    Samsung Bioimpedance System Evaluation Study


    Bioimpedance analysis systems are rapidly evolving and are now increasingly being used in research, clinical, and home settings (1). The novel Samsung BIA devices operate through a wrist-worn watch and provide the user with estimates of percent body fat and other body composition estimates. Samsung wants to conduct a validation test of BIA solutions implemented on the smartwatch in collaboration with PBRC and affiliated UHCC to make sure the BIA devices are accurate.

    We hypothesize that novel Samsung bioimpedance analysis (BIA) devices will be accurate relative to the reference dual-energy X-ray absorptiometry (DXA) measurements and other BIA system estimates for measuring body composition.


    The study hypothesis will be tested as follows. Each subject will complete Samsung BIA, DXA, anthropometric, and other BIA testing at Pennington Biomedical Research Center (PBRC) or the University of Hawaii Cancer Center (UHCC). The acquired data will then be used to accomplish the specific aims:

    1. Identify the associations of body composition acquired by the novel Samsung BIA devices with those estimated by DXA and other BIA systems.
    2. Describe the precision and accuracy of the novel BIA-derived body composition estimates.

    Research Team

    Steven B Heymsfield, MD

    Principal Investigator

    John A Shepherd, PhD

    Principal Investigator

    Funding Source(s)


    Publications & Presentations

    Bennett, Jonathan P, Liu, Yong En, Kelly, Nisa N, Quon, Brandon K, Wong, Michael C, McCarthy, Cassidy, et al. Next generation smartwatches to estimate whole body composition using bioimpedance analysis: accuracy and precision in a diverse multiethnic sample. The American Journal of Clinical Nutrition [Internet]. 2022; Cite