Ritchie Julie D, Miller Carla K, Smiciklas-Wright Helen
Department of Nutritional Sciences, The Pennsylvania State University, University Park 16802, USA.
J Am Diet Assoc. 2005 Oct;105(10):1617-9. doi: 10.1016/j.jada.2005.07.011.
Simple, accurate, and noninvasive methods for assessing body composition are needed in many clinical, community, and research settings. The foot-to-foot bioelectrical impedance analysis (BIA) system may be one method of addressing those needs. The objective of this study was to determine the validity of a foot-to-foot BIA system for body-composition assessment of older adults. Subjects 55 years of age or older without functional limitations or cognitive impairments (N=50) were measured using both the Tanita foot-to-foot system (Tanita Corporation of America, Inc, Arlington Heights, IL) and traditional hand-to-foot BIA. The correlation for percent body fat measurements between the Tanita and traditional BIA was r=0.84 (P<.001). Percent body fat estimates from both BIA measures were significantly correlated with waist circumference, body mass index, and age (all P<.01). The Tanita BIA system provides a valid measure of percent body fat in older adults, and could be a convenient and practical approach for assessment in public health settings.
在许多临床、社区和研究环境中，都需要简单、准确且无创的身体成分评估方法。双脚生物电阻抗分析（BIA）系统可能是满足这些需求的一种方法。本研究的目的是确定一种双脚BIA系统用于评估老年人身体成分的有效性。使用Tanita双脚系统（美国Tanita公司，伊利诺伊州阿灵顿高地）和传统的手到脚BIA对55岁及以上无功能限制或认知障碍的受试者（N = 50）进行测量。Tanita与传统BIA之间的体脂百分比测量的相关性为r = 0.84（P <.001）。两种BIA测量方法得出的体脂百分比估计值均与腰围、体重指数和年龄显著相关（所有P <.01）。Tanita BIA系统为老年人的体脂百分比提供了有效的测量方法，并且可能是公共卫生环境中一种方便实用的评估方法。
