Subject characteristics

Values are means±SEM.aMeasured by DEXA as described in the Experimental protocol section.bMeasured by MRI as described in the Experimental protocol section.数据以平均值±标准误（standard error of the mean, SEM）表示。注a：如实验方案章节所述，采用双能X线吸收法（Dual-energy X-ray Absorptiometry, DEXA）进行测量。注b：如实验方案章节所述，采用磁共振成像（Magnetic Resonance Imaging, MRI）进行测量。