Development of an equation to predict muscle volume of elbow flexors for men and women with a wide range of age
Development of an equation to predict muscle volume of elbow flexors for men and women with a wide range of age
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DOI：
10.1007/s00421-009-1269-1
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发表时间：
2010-03-01
影响因子：
3
通讯作者：
Kawakami, Yasuo
中科院分区：
文献类型：
--
作者：
Akagi, Ryota;Takai, Yohei;Kawakami, Yasuo
本文研究了肘屈肌的肌层厚度(MT)和体积(MV)随年龄的变化，建立了适用于不同年龄段男性和女性的屈肘肌层厚度和体积的预测方程。男性72例，女性75例，年龄19~77岁，分别通过单次超声图像和多次磁共振成像确定MT和MV。通过计算性别控制变量的偏相关系数来检验年龄-MT和年龄-MV的关系，结果表明，MV随着年龄的增长而降低，而MT的相应下降并不显著。将受试者随机分为验证组(男38人，女42人)和交叉验证组(男34人，女33人)，建立多元回归方程[MV(cm(3))=60.8x MT(Cm)+6.48x L(Cm)-0.709 x年龄(岁)+51.4x性别(0女，1男)-187.4]。因此，新建立的肘屈肌MV预测方程适用于不同年龄的男性和女性。
The present study examined the age-related changes in muscle thickness (MT) and volume (MV) of elbow flexors and developed a prediction equation of the MV based on the MT applicable to men and women with a wide range of age. The MT and MV were determined from a single ultrasonographic image and multiple magnetic resonance imaging scans, respectively, in 72 men and 75 women aged 19-77 year. As a result of examining the age-MT and age-MV relationships by calculation of partial correlation coefficients with the control variable of gender, MV was decreased with aging whereas the corresponding decline in MT was not significant. The subjects were randomly separated into either a validation (38 men and 42 women) or a cross-validation (34 men and 33 women) group, and a multiple regression equation to estimate MV using not only MT but also upper arm length (L), age and gender as independent variables [MV (cm(3)) = 60.8 x MT (cm) + 6.48 x L (cm) - 0.709 x age (year) + 51.4 x gender (0 women, 1 men) - 187.4] was validated and cross-validated. Thus, the prediction equation for MV of elbow flexors newly developed was shown to be applicable to men and women with a wide range of age.