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目的:探讨骨量(骨密度、骨矿量)与体重、全身各部位脂肪量及肌肉量的关系。方法:对287例汉族健康志愿者测量体重、全身、躯干、上肢、下肢这些部位的脂肪量、肌肉量及骨量(骨密度和骨矿量)。脂肪量、肌肉量、体重与全身各部位的骨量(骨密度和骨矿量)的关系探索采用偏相关分析。结果:体重同全身总骨密度(r=0.692)、全身总矿量(r=0.751)、躯干密度(r=0.752)、躯干矿量(r=0.707)、上肢密度(r=0.659)、上肢矿量(r=0.690)、下肢密度(r=0.690)、下肢矿量(r=0.800),在控制性别和年龄的影响后均显著正相关(P均为0.000)。在控制性别和年龄的影响后,全身、躯干、上肢、下肢这些部位的肌肉量及脂肪量同相应部位的骨密度和骨矿量均显著正相关(P均为0.000),r值在0.271～0.905之间,而肌肉量比脂肪量同骨密度和骨矿量的相关程度更高。结论:全身、躯干、上肢、下肢的骨量(骨密度和骨矿量)的同相应部位的肌肉量及脂肪量及总体重正相关,其中与肌肉量的相关性更大。
Objective: To investigate the relationship between bone mass (bone mineral density, bone mineral content) and body weight, total body fat mass and muscle mass. Methods: A total of 287 healthy volunteers were enrolled in this study. Body mass, body weight, trunk, upper extremity and lower extremities were measured for fat mass, muscle mass and bone mass (BMD and bone mineral content). Partial correlation analysis was used to investigate the relationship between fat mass, muscle mass, body weight and total body mass (BMD and bone mineral content). RESULTS: Body weight was significantly associated with total body BMD (r = 0.692), total body mineral volume (r = 0.751), trunk density (r = 0.752), trunk volume (r = 0.707), upper limb density Mineral density (r = 0.690), lower extremity density (r = 0.690) and lower extremity mineral volume (r = 0.800) were significantly positively correlated with gender and age (P = 0.000). After controlling for gender and age, the amounts of muscle mass and fat mass in the whole body, trunk, upper extremity and lower extremity were significantly and positively correlated with the bone mineral density and bone mineral content at the corresponding sites (P <0.0001), r values were between 0.271 ~ 0.905, while the amount of muscle mass is more related to the amount of bone mineral density and bone mineral content. Conclusion: The body mass, trunk, upper extremity and lower extremity bone mass (BMD and bone mineral content) are positively correlated with the amount of muscle mass, fat mass and total body weight, and are more correlated with muscle mass.