Comparison Of Withings Bodycardio To Gold Standard Measurements Of Pulse-Wave Velocity And Body Compositon

ASU Author/Contributor (non-ASU co-authors, if there are any, appear on document)
Conner McCraw (Creator)
Appalachian State University (ASU )
Web Site:
Scott Collier

Abstract: General Wellness Products (GWP) are widely used by consumers, human physiology scientists, and healthcare practitioners. However, current research on GWP accuracy is limited and often reports large inaccuracies. Purpose: The purpose of this study was to assess the Withings BodyCardio for accuracy in the measurement of body composition and arterial health when compared against gold standard laboratory measurements. Methods: Healthy, young males (N=10) and females (N=10) were assessed for measures of body composition and pulse-wave velocity (PWV) in a randomized order utilizing air displacement plethysmography (BodPod), applanation tonometry (SphygmoCor), and the Withings BodyCardio. Measures of body composition and PWV were compared with criterion measures using the Bland-Altman analysis and mean absolute percent error (MAPE). Results: Data is reported as Bias (95% Confidence Interval). The BodyCardio overestimated PWV by 0.68 m/s (-0.16, 1.51) and fat mass by 2.91 kg (-2.91, 8.73). BodyCardio PWV and fat mass estimations had a MAPE of 9.7% and 25.8%, respectively. The BodyCardio underestimated body mass and fat-free mass by 0.11 kg (-0.41, 0.18) and 2.87 kg (-9.04, 3.30), respectively. BodyCardio body mass and fat-free mass estimations had a MAPE of 0.15% and 5.6%, respectively. Discussion: The Withings BodyCardio should be used cautiously for measures of fat mass and fat-free mass, although it provides accurate measures of body mass and PWV.

Additional Information

McCraw, C. (2018). "Comparison Of Withings Bodycardio To Gold Standard Measurements Of Pulse-Wave Velocity And Body Compositon." Unpublished Master’s Thesis. Appalachian State University, Boone, NC.
Language: English
Date: 2018
Validation, Digital Health, Withings, Body Composition, Pulse wave velocity

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