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探讨非骨质疏松男性体重指数(Body mass index,BMI)与腰椎骨密度(Bone mineral density,BMD)、骨矿含量(Bone mineral content,BMC)之间的相关性,明确体重指数对人体腰椎BMD、BMC的影响。对2003.8～2005.12因骨关节疼痛在四川大学华西医院就诊并经双能X线骨密度仪检测,骨密度<-2.5SD的838例男性患者,计算BMI(Kg/m2)并分组:BMI≥23为第1组(该组按BMI≥29为A组46人、25≤BMI<28.9为B组201人、23≤BMI<24.9为C组193人);18.52组>1组,差异显著有统计学意义(P<0.05或P<0.01);L3和L4BMC、aBMC及L2aBMC均为3组>2组>1组,差异显著(P<0.01),而L2BMC为1组>3组>2组,无统计学意义(P>0.05);T值组间比较无统计学意义(P>0.05)。(2)1组中,A、B、C三组内比较,L2-L4BMD、平均BMD均为C组>B组>A组,差异显著,有统计学意义(P<0.05或P<0.01);L3和L4BMC、aBMC及L2aBMC均为C组>B组>A组,差异显著(P<0.01),而L2BMC为A组>C组>B组,差异无统计学意义(P>0.05);T值各组内比较无统计学意义(P>0.05)。(3)BMI与平均BMD呈负相关性(P<0.01,r=-0.189)。非骨质疏松男性其体重指数升高可降低腰椎平均骨密度,且肥胖越明显者,其腰椎平均骨密度下降越明显,L3和L4骨密度、骨矿含量、总骨矿含量下降幅度可能大于L2。
To investigate the correlation between body mass index (BMI) and Bone mineral density (BMD) and Bone mineral content (BMC) in non-osteoporosis men and to determine the effect of body mass index , The impact of BMC. From August 2003 to December 2005, BMI (Kg / m2) was calculated and divided into 8 groups according to the pain of bone and joint pain in 838 male patients with BMD <-2.5SD who were treated at Huaxi Hospital of Sichuan University and tested by dual-energy X-ray absorptiometry. (Group BMI≥29 for the A group of 46 people, 25 2 groups> 1 group (P <0.05 or P <0.01) L4BMC, aBMC and L2aBMC were all significantly higher than those in the control group (P> 0.05). There was no significant difference between the two groups (P> 0.05) Compared with no statistical significance (P> 0.05). (2) In group A, there were significant differences between groups A, B and C (P <0.05 or P <0.01), L2-L4BMD and average BMD were all in group C> ; L3 and L4BMC, aBMC and L2aBMC were in group C> group B> group A, with significant difference (P <0.01), while group L2BMC was group A> group C> group B with no significant difference (P> 0.05). T value in each group was not statistically significant (P> 0.05). (3) BMI was negatively correlated with mean BMD (P <0.01, r = -0.189). The non-osteoporosis male body mass index can reduce the average lumbar spine density, and the more obvious obesity, the lumbar spine average bone mineral density decreased more significantly, L3 and L4 bone mineral density, bone mineral content, bone mineral content decreased more than L2.