ASBMR:老年人肌肉量减少可能提示骨折风险增加

2015-10-24 seven L 译 MedSci原创

一项对65岁退休人员的大型队列研究表明,肌肉减少症会增加短期内骨质疏松性骨折风险。该研究纳入了913名健康参与者,其中80%为女性,13%为肥胖(BMI≥30),日常钙摄入量在推荐范围内。研究者通过DEXA评估参与者全身和四肢的肌肉体积情况,根据骨密度情况计算参与者的FRAX。根据Baumgartner或 EWGSOP 1 阈值,其中11%的参与者肌肉体积低于正常值;根据EWGSOP 2 阈值或I

一项对65岁退休人员的大型队列研究表明,肌肉减少症会增加短期内骨质疏松性骨折风险。该研究纳入了913名健康参与者,其中80%为女性,13%为肥胖(BMI≥30),日常钙摄入量在推荐范围内。

研究者通过DEXA评估参与者全身和四肢的肌肉体积情况,根据骨密度情况计算参与者的FRAX。根据Baumgartner或 EWGSOP 1 阈值,其中11%的参与者肌肉体积低于正常值;根据EWGSOP 2 阈值或IWG,该比例变为17%;若是根据 FNIH定义,则数据变为3.5%。

研究组观察到,肌肉减少症女性很少发生肥胖,尤其是女性,并且他们有潜在的摄入更少的蛋白质和钙的趋势。同时该人群甲状旁腺素也更少。对参与者平均随访3.4年的过程中,40名研究对象发生过脆弱或骨质疏松性骨折(不是严重创伤的骨折),包括髋部、锁骨、腿、手臂或手腕骨折,但不包括手指和脚趾骨折。

对于没有发生此类骨折的人群相比,他们全身或四肢的肌肉体积均更少:全身 41.2 vs 43.7 kg, P = 0.04;四肢 17.2 vs 18.6 kg, P = 0.02。显然肌肉体积少的人群更容易发生上述骨折。根据Baumgartner或EWGSOP 1 阈值标准,HR=2.3; 95% CI, 1.0–5.1, P = 0.05。但是根据EWGSOP 2 或IWG阈值标准,HR=1.3; 95% CI, 0.6– 2.7; P > 0.05,两者间又没有明确的相关性。根据FNIH 标准,没有发现肌肉减少症发生该类骨折。

即是说根据不同评判标准,会得出不同的相关性。并且该研究人群为65岁以上退休人员,并不能代表大众。因此以后还需要更多的研究探究肌肉功能与骨折的关系。

原始出处:

American Society for Bone and Mineral Research 2015 Annual Meeting; Seattle, Washington. October 11, 2015.

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    2016-01-27 doctording1

    实用

    0

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    2016-01-27 doctording1

    不错,赞一个

    0

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    2016-01-26 doctording1

    不错的东西!

    0

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    2015-10-29 Bobby7868

    真好

    0

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    2015-10-26 clmlylxy