Validity of ultrasound muscle thickness measurements for predicting leg skeletal muscle mass in healthy Japanese middle-aged and older individuals.
Validity of ultrasound muscle thickness measurements for predicting leg skeletal muscle mass in healthy Japanese middle-aged and older individuals.
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DOI：
10.1186/1880-6805-32-12
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发表时间：
2013-09-25
影响因子：
3.1
通讯作者：
Kanehisa H
中科院分区：
文献类型：
--
作者：
Takai Y;Ohta M;Akagi R;Kato E;Wakahara T;Kawakami Y;Fukunaga T;Kanehisa H
下肢的骨骼肌质量对其日常生活中的活动能力起着重要作用。从身体资源的角度来看，50岁以后腿部肌肉质量主要下降。因此，准确估计肌肉质量对于中老年人群来说非常重要。本研究旨在阐明超声肌肉厚度（MT）测量对于预测健康日本中老年人群腿部骨骼肌质量（SM）的有效性。分别使用亮度模式超声检查和双能 X 射线吸收测定法 (DXA) 测定了 44 名女性和 33 名男性（年龄为 52 至 78 岁）下肢四个部位的 MT 和右腿的无骨瘦肉组织质量 (LTM)。 LTM 被用作腿部骨骼肌质量的代表变量。在模型开发组（30 名女性和 22 名男性）中，回归分析产生了一个方程，其 R2 和估计标准误差 (SEE) 分别为 0.958 和 0.3 kg：LTM (kg) = 0.01464 × (MTSUM×L) (cm2) - 2.767，其中 MTSUM 是四个站点 MT 乘积的总和，L 是段的长度，其中 MT 是 决定。估计的 LTM (7.0 ± 1.7 kg) 与测量的 LTM (7.0 ± 1.7 kg) 没有显着差异，Bland-Altman 图上没有显着的系统误差。将此方程应用于交叉验证组（14 名女性和 11 名男性），测量的 (7.2 ± 1.6 kg) 或估计的 (7.2 ± 1.6 kg) LTM 和系统误差之间没有产生显着差异。所开发的预测方程可能有助于估计健康的日本中老年人群的下肢瘦组织量。
The skeletal muscle mass of the lower limb plays a role in its mobility during daily life. From the perspective of physical resources, leg muscle mass dominantly decreases after the end of the fifth decade. Therefore, an accurate estimate of the muscle mass is important for the middle-aged and older population. The present study aimed to clarify the validity of ultrasound muscle thickness (MT) measurements for predicting leg skeletal muscle mass (SM) in the healthy Japanese middle-aged and older population. MTs at four sites of the lower limb and the bone-free lean tissue mass (LTM) of the right leg were determined using brightness-mode ultrasonography and dual-energy X-ray absorptiometry (DXA), respectively, in 44 women and 33 men, 52- to 78-years old. LTM was used as a representative variable of leg skeletal muscle mass. In the model-development group (30 women and 22 men), regression analysis produced an equation with R2 and standard error of the estimate (SEE) of 0.958 and 0.3 kg, respectively: LTM (kg) = 0.01464 × (MTSUM×L) (cm2) - 2.767, where MTSUM is the sum of the product of MTs at four sites, and L is length of segment where MT is determined. The estimated LTM (7.0 ± 1.7 kg) did not significantly differ from the measured LTM (7.0 ± 1.7 kg), without a significant systematic error on a Bland-Altman plot. The application of this equation for the cross-validation group (14 women and 11 men) did not yield a significant difference between the measured (7.2 ± 1.6 kg) or estimated (7.2 ± 1.6 kg) LTM and systematic error. The developed prediction equation may be useful for estimating the lean tissue mass of the lower extremity for the healthy Japanese middle-aged and older population.
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影响因子：
5.8
作者：
Chen, B. -B.;Shih, T. T. F.;Chen, C. -Y.
通讯作者：
Chen, C. -Y.
影响因子：
3
作者：
Nakamoto, Hiroki;Yoshitake, Yasuhide;Mori, Shiro
通讯作者：
Mori, Shiro
影响因子：
3.3
作者：
Wang, W;Wang, ZM;Heymsfield, SB
通讯作者：
Heymsfield, SB
影响因子：
3
作者：
Miyatani, M;Kanehisa, H;Fukunaga, T
通讯作者：
Fukunaga, T
影响因子：
3
作者：
Miyatani, M;Kanehisa, H;Fukunaga, T
通讯作者：
Fukunaga, T