Femur bone mineral density (BMD), serum bone gla protein (BGP) as well as hydroxyproline/creatinine (HOP/Cr) were determined before and during 20 d HDBR.

• 分别于卧床前和卧床 2 0d进行了股骨骨密度 (BMD)、血清骨钙素 (BGP)、羟脯氨酸 /肌酐 (HOP/Cr)等指标的测量。