Withings体脂秤与脉搏波速度和身体成分的金标准对比
Withings Body Cardio versus Gold Standards of Pulse-Wave Velocity and Body Composition.
作者信息
Collier Scott R, McCraw Conner, Campany Megan, Lubkeman Austin, StClair Price, Ji Hong, Sandberg Kathryn, Morgan Joseph W, Smith Caroline J
机构信息
Department of Health and Exercise Science, Appalachian State University Boone, NC. 28608, USA.
Department of Medicine, Georgetown University, Washington DC, 20008 USA.
出版信息
J Pers Med. 2020 Mar 11;10(1):17. doi: 10.3390/jpm10010017.
UNLABELLED
Home blood pressure monitors are widely used by consumers yet cardiovascular health may be better defined by pulse-wave velocity (PWV). So far, the Withings Body Cardio scale is the only consumer device that has been designed to measure PWV and body composition, including fat mass (FM) and fat-free mass (FFM), in the home setting. While one study has demonstrated that this device meets the acceptable accuracy standards of the ARTERY Society, no study has accounted for the gravitational effect of standing on a scale on aortic-leg PWV.
PURPOSE
The purpose of this study was to assess the accuracy of PWV and body composition as determined by the Body Cardio scale.
METHODS
Measurements of PWV and body composition in healthy, young males and females ( = 20) using the Body Cardio device were compared to PWV assessed by applanation tonometry (SphygmoCor) and body composition analysis determined by air displacement plethysmography (Bod Pod). Bland-Altman analysis and mean absolute percent error (MAPE) were used to assess accuracy.
RESULTS
Data are reported as the mean bias (95% confidence interval). The Body Cardio overestimated PWV by 0.68 m/s (-0.16, 1.51) and FM by 2.91 kg (-2.91, 8.73). Body Cardio PWV and FM estimations had a MAPE of 9.7% and 25.8%, respectively. The Body Cardio underestimated body mass (BM) and FFM by 0.11 kg (-0.41, 0.18) and 2.87 kg (-9.04, 3.30), respectively. Body Cardio BM and FFM estimations had a MAPE of 0.15% and 5.6%, respectively.
CONCLUSIONS
The Body Cardio scale provides accurate measures of BM and PWV; however, it should be used cautiously for measures of FM and FFM.
未标注
家用血压监测仪被消费者广泛使用，但心血管健康或许可以通过脉搏波速度（PWV）得到更好的界定。到目前为止，Withings Body Cardio体重秤是唯一一款设计用于在家庭环境中测量PWV以及身体成分（包括脂肪量（FM）和去脂体重（FFM））的消费设备。虽然一项研究表明该设备符合动脉协会可接受的准确性标准，但尚无研究考虑站在体重秤上对主动脉-腿部PWV的重力影响。
目的
本研究的目的是评估Body Cardio体重秤测定PWV和身体成分的准确性。
方法
将使用Body Cardio设备对健康年轻男性和女性（=20）进行的PWV和身体成分测量结果，与通过压平式眼压测量法（SphygmoCor）评估的PWV以及通过空气置换体积描记法（Bod Pod）确定的身体成分分析结果进行比较。采用布兰德-奥特曼分析和平均绝对百分比误差（MAPE）来评估准确性。
结果
数据报告为平均偏差（95%置信区间）。Body Cardio体重秤高估PWV 0.68米/秒（-0.16，1.51），高估FM 2.91千克（-2.91，8.73）。Body Cardio体重秤对PWV和FM的估计的MAPE分别为9.7%和25.8%。Body Cardio体重秤低估体重（BM）和FFM分别为0.11千克（-0.41，0.18）和2.87千克（-9.04，3.30）。Body Cardio体重秤对BM和FFM的估计的MAPE分别为0.15%和5.6%。
结论
Body Cardio体重秤能够准确测量BM和PWV；然而，在测量FM和FFM时应谨慎使用。
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