Institute of Nutritional Science, Justus-Liebig-University, Giessen, Germany.
Ultrasound Med Biol. 2011 Dec;37(12):1984-92. doi: 10.1016/j.ultrasmedbio.2011.09.015. Epub 2011 Oct 27.
The impact of fat-free mass (FFM), fat mass (FM), body mass index (BMI), body mass and body height on calcaneal bone characteristics as measured with quantitative ultrasound (QUS) was investigated in 137 women and 85 men aged 62-92 years, considering age, smoking, waist-to-hip ratio (WHR) and physical activity level (PAL). In regression analyses using various models, in women, age was a negative predictor of speed of sound (SOS), broadband ultrasound attenuation (BUA) and stiffness index (SI) and smoking was a negative predictor of SOS; positive predictors of SOS, BUA, and SI were BMI, body mass and FFM. In men, smoking was a negative predictor and BMI, body mass and FFM were positive predictors of BUA and SI. In both sexes, PAL, body height, WHR and FM had no effect on QUS parameters. The influence of BMI on calcaneal bone characteristics in elderly people depends on FFM rather than on FM.
本研究调查了 137 名女性和 85 名 62-92 岁的男性的无脂肪质量（FFM）、脂肪质量（FM）、体重指数（BMI）、体重和身高对跟骨骨特征的影响，这些特征是通过定量超声（QUS）测量的，并考虑了年龄、吸烟、腰臀比（WHR）和身体活动水平（PAL）。在使用不同模型的回归分析中，在女性中，年龄是声速（SOS）、宽带超声衰减（BUA）和硬度指数（SI）的负预测因子，吸烟是 SOS 的负预测因子；SOS、BUA 和 SI 的正预测因子是 BMI、体重和 FFM。在男性中，吸烟是 BUA 和 SI 的负预测因子，而 BMI、体重和 FFM 是 BUA 和 SI 的正预测因子。在两性中，PAL、身高、WHR 和 FM 对 QUS 参数没有影响。BMI 对老年人跟骨骨特征的影响取决于 FFM，而不是 FM。
