在社区居住的老年人中比较设备生成和计算的生物阻抗变量
Kworweinski Lafontant1,2, Danielle A Sterner1, David H Fukuda1
1Institute of Exercise Physiology and Rehabilitation Science, University of Central Florida, Orlando, FL 32816, USA.
Sensors (Basel, Switzerland)
|September 14, 2024
概括
从老年人的细分数据计算全身生物电变量需要仔细考虑. 建议使用右侧分段值,以使用现代生物电阻分析设备进行准确的相角计算.
科学领域:
- 老年学是一门学科.
- 生物医学工程 生物医学工程
- 临床营养学 临床营养学
背景情况:
- 生物电阻分析 (BIA) 越来越多地用于评估老年人的健康状况.
- 使用现代BIA设备从分段测量计算全身生物电变量 (阻抗,反应电阻,电阻,相角) 需要标准化.
研究的目的:
- 为了比较全身和细分设备生成的相角 (PhADG) 与从总的细分阻抗 (Z),反应率 (Xc) 和电阻 (R) (PhACalc) 中计算的相角.
- 为了比较身体左侧和右侧之间的生物电变量.
- 从老年人的细分数据中确定最合适的方法来计算全身生物电变量.
主要方法:
- 在103名社区老年人的样本中,使用50kHz的直接分段多频BIA设备进行了评估.
- 全身PhACalc与PhADG进行了比较,使用非参数的约定极限和斯皮尔曼的rho.
- 身体两侧之间的生物电价值使用威尔科克森等级和斯皮尔曼的rho.
主要成果:
- 在PhADG和右PhACalc (-0.004°) 与左PhACalc (0.107°) 和组合PhACalc (0.107°) 之间发现了较小的平均差异.
- 观察到左侧和右侧身体之间总和Z,R和PhACalc的显著差异 (p <0.01).
- 双边BIA值在全身测量中是不可互换的.
结论:
- 右侧分段生物电阻分析值是最适合计算老年人全身变量.
- 目前的双边BIA设备需要特定的协议来进行准确的全身评估.
- 进一步的研究应该验证这些发现在不同人群中.
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