| 摘要: |
| 目的 探讨中老年男性人群体成分与骨密度（BMD）的相关性。 方法 选取 2011 年 1 月至 2014 年 11 月在宁波市 第一医院门诊体检且年龄≥50 岁男性 216 例为研究对象，并分为 4 个年龄组：50 岁 ~ 组 70 例，60 岁 ~ 组 56 例，70 岁～组 47 例，80 岁 ~ 组 43 例，使用双能 X 线吸收测定仪测量第 2~4 腰椎、左侧股骨颈和全髋部的 BMD，并分析各年龄层中老年人群体成分（全身、躯 干、大腿的总质量，肌肉、脂肪含量及其百分比）与 BMD 的相关性。 结果 50 岁～组大腿肌肉对股骨颈 BMD 影响最大（b'=0.340， t=2.984，P=0.004）；60 岁～组全身肌肉对股骨颈 BMD 影响最大 （b'=0.415，t=3.352，P=0.001）；70 岁～组全身脂肪对股骨颈 BMD 影 响最大（b'=0.476，t=3.633，P=0.001）；80 岁 ~ 组躯干脂肪对股骨颈 BMD 影响最大（b'=0.479，t=2.993，P=0.004）；体成分对全髋部、腰 椎 BMD 的相关性与股骨颈相似。 结论 随着年龄增长，肌肉对 BMD 的影响逐渐减弱，脂肪对 BMD 的影响逐渐增强；四肢的体成分 对 BMD 的影响逐渐减弱，躯干的体成分对 BMD 的影响逐渐增强。 |
| 关键词: 中老年人 男性 体成分 骨密度 |
| DOI： |
| 分类号: |
| 基金项目:宁波市社会发展项目 |
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| Relationship between body composition and bone mineral density in middle- aged and elderly men |
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LI Ying, YAO Qi, LIU Ting, YU Jingbo
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the Affliated Ningbo First Hospital of Ningbo University
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| Abstract: |
| Objective To investigate the relationship between body composition and bone mineral density (BMD) in middle-aged and elderly men. Methods Total 216 middle-aged and elderly men were recruited and divided into 4 age groups, 50~(n=70), 60~(n=56), 70~(47) and 80~(n=43). Dual-energy X-ray absorptiometry was used to measure the BMD of lumbar vertebrae L2~4, left femoral neck and total hip. The mass of whole body, trunk and thigh were measured, and the content, percentage of lean mass and fat mass was analyzed. Results In age group of 50~, thigh lean mass was more closely correlated with BMD of femoral neck (b′=0.340, t=2.984, P=0.004). In age group of 60~, whole body muscle content was more closely correlated with BMD of femoral neck (b′=0.415, t=3.352, P=0.001). In age group of 70~, whole body fat content was more closely correlated with BMD of femoral neck (b′=0.476, t=3.633, P=0.001). In age group 80~, trunk fat content was more closely correlated with BMD of femoral neck (b′=0.479, t=2.993, P=0.004). Conclusion As the age increasing, the impact of muscle content on BMD is reduced gradually, while the impact of fat content is rising; meanwhile, as the age increasing, the impact of body composition of limbs on BMD is decreased gradually, and this impact is transited to the body composition of trunk. |
| Key words: The wrinkly and the elderly Men Bone mineral density Body composition |
