Wen Xu, Wang Mei, Jiang Chong-Min, Zhang Yi-Min
Department of Physical Education, Zhejiang University, Hangzhou, China.
Asia Pac J Clin Nutr. 2011;20(4):551-6.
The purpose of this study was to develop and cross-validate anthropometric equations for the estimation of appendicular skeletal muscle mass (ASM) in Chinese adults. A total of 763 adults aged 18-69 years (345 men and 418 women) were recruited from residents living in four regions (Jinan, Guangzhou, Xi'an and Chengdu) in China. ASM were measured by fan-beam dual energy x-ray absorptiometry. Participants' body weight, height, limb circumferences (upper arm, thigh, and calf), waist circumference, and skinfold thicknesses (triceps, thigh, and calf) were measured by trained testers. The participants were randomly assigned to two groups: a model-development group (MD group) and a cross-validation group (CV group). Prediction models were established using the data from the MD group, and cross-validated with the data of the CV group. The results suggested that the developed equations had satisfactory prediction qualities, and could be applied as a practical method of quantifying ASM in Chinese adults.
本研究的目的是开发并交叉验证用于估算中国成年人四肢骨骼肌质量（ASM）的人体测量学方程。从中国四个地区（济南、广州、西安和成都）的居民中招募了763名年龄在18至69岁之间的成年人（345名男性和418名女性）。采用扇形束双能X线吸收法测量ASM。由经过培训的测试人员测量参与者的体重、身高、肢体周长（上臂、大腿和小腿）、腰围以及皮褶厚度（肱三头肌、大腿和小腿处）。参与者被随机分为两组：模型开发组（MD组）和交叉验证组（CV组）。使用MD组的数据建立预测模型，并通过CV组的数据进行交叉验证。结果表明，所开发的方程具有令人满意的预测质量，可作为量化中国成年人ASM的一种实用方法。
