Faculty of Sport Sciences and Physical Education, University of Coimbra, CIDAF-Research Center for Sport and Physical Activity, Coimbra, Portugal.
Center for Neuroscience and Cell Biology, Center for Innovative Biomedicine and Biotechnology, University of Coimbra, Coimbra, Portugal.
Pan Afr Med J. 2024 Jun 28;48:80. doi: 10.11604/pamj.2024.48.80.42997. eCollection 2024.
the need to correctly measure and follow body composition as a simple disease prevention metric is important, especially where the healthcare infrastructures are poor. The variety of inexpensive devices available for this purpose is large. However, it is imperative to validate them in relation to the gold standard method, dual-energy absorptiometry X-ray (DEXA). In low-income countries, DEXA measurements aren't available. Thus, easy-to-use, and accurate devices are indispensable. In Guinea-Bissau, two relatively inexpensive, bioelectrical impedance scales, simple to use, are available. However, their accuracy has not been assessed in this setting. The study compares the level of agreement in measurements between, the Tanita® BC-545 and the Omron Karada Scan BF511, in adult volunteers.
volunteers grouped for athletic and sports modalities at stadiums and sports facilities in Bissau were included. All anthropometric measurements were done in both devices. For statistical analysis, we created Bland-Altman plots to assess their level of agreement.
the study included 274 participants, mean age 27.4 years, 214 (78%) males. For body fat, the median between the Omron and Tanita measures was 2.6 and the interquartile was 5.2. The Omron measured median body mass index, -0.3 kg/m and 0.8 kg/m of interquartile below that of the Tanita. For visceral fat, the Omron measured 1% of median and an interquartile of 2% above that of the Tanita. For skeletal muscle, the Omron median measured 11.3% and 11.4 % of interquartile below that of the Tanita. The intra-class correlation coefficient (ICC) for body fat (BF), body mass index (BMI) and skeletal muscle (SM) was 0.99 and for VF it was 1.00 on both devices.
the results indicate a good level of agreement between the two devices. In resource-limited settings, the Omron is likely a reasonable substitute for more expensive body composition devices.
正确测量和跟踪身体成分作为一种简单的疾病预防指标非常重要，尤其是在医疗基础设施较差的情况下。为此目的提供了大量廉价设备。但是，必须针对金标准方法（双能 X 射线吸收法（DEXA））对其进行验证。在低收入国家，无法进行 DEXA 测量。因此，易于使用且准确的设备是必不可少的。在几内亚比绍，有两种相对便宜，易于使用的生物电阻抗秤，但尚未在该环境中评估其准确性。本研究比较了在体育场和体育设施中参加运动和运动模式的志愿者中，Tanita®BC-545 和 Omron Karada Scan BF511 之间测量值的一致性。
志愿者根据运动和运动模式分组，在比绍的体育场和体育设施中参加运动和运动模式。在这两种设备中均进行了所有人体测量。为了进行统计分析，我们创建了 Bland-Altman 图来评估它们的一致性。
该研究包括 274 名参与者，平均年龄为 27.4 岁，214 名（78％）男性。对于体脂肪，奥姆龙和 Tanita 测量值之间的中位数为 2.6，四分位距为 5.2。奥姆龙测量的平均体重指数为-0.3kg/m，比 Tanita 低 0.8kg/m。对于内脏脂肪，奥姆龙的中位数为 1％，四分位距比 Tanita 高 2％。对于骨骼肌，奥姆龙的中位数测量值为 11.3％，四分位距比 Tanita 低 11.4％。两种设备的体脂肪（BF），体重指数（BMI）和骨骼肌（SM）的组内相关系数（ICC）分别为 0.99，内脏脂肪（VF）为 1.00。
结果表明两种设备之间具有良好的一致性。在资源有限的环境中，奥姆龙可能是更昂贵的身体成分设备的合理替代品。
