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JAHA:外周动脉疾病患者体重变化与小腿肌肉特征和功能衰退的关系

2019-07-01 xing.T MedSci原创

尽管小腿肌肉面积减少较多,但有意减重≥5磅的外周动脉疾病患者的功能衰退程度低于体重增加者。需要一项随机试验来确定外周动脉疾病患者体重减轻的益处是否超过潜在的不良反应。

在下肢外周动脉疾病患者中,与正常体重相比,肥胖与功能下降更快有关。外周动脉疾病患者体重减轻与功能衰退的关系尚不清楚。近日,心血管疾病领域权威杂志JAHA上针对这一问题发表了一篇研究文章。

2002-2004年期间,研究人员确定了在芝加哥地区医院就诊的踝臂指数<0.90的成年人。每年测量体重和6分钟步行距离。体重变化分为体重减轻或增加(在1次以上的就诊期间≥1磅/年)或稳定(每次就诊时体重变化<5磅)。参与者报告体重减轻是“有意”还是“无意”。每2年用计算机断层扫描测量小腿肌肉面积。使用混合效应模型分析体重变化与小腿肌肉面积和6分钟步行距离变化之间的关联,并针对年龄、体重指数、踝肱指数、身体活动和其他混杂因素进行调整。

在389例患者中,平均踝臂指数为0.63±0.16,平均年龄为74.5±7.8岁,平均体重指数为28.1±5.1 kg/m2。在3.23±1.37年期间,相比于体重稳定或增加,有意减重的成年人肌肉面积下降更多(配对比较,P<0.001)。相比于体重增加,有意减肥与6分钟步行距离的年度下降较少有关(有意减重,3.7米;体重稳定,-14.0米;体重增加,-28.5米;无意减重,-20.8米;有意减重与体重增加配对比较,P=0.003)。

尽管小腿肌肉面积减少较多,但有意减重≥5磅的外周动脉疾病患者的功能衰退程度低于体重增加者。需要一项随机试验来确定外周动脉疾病患者体重减轻的益处是否超过潜在的不良反应。 

原始出处:

Tamar S. Polonsk.et al.Associations of Weight Change With Changes in Calf Muscle Characteristics and Functional Decline in Peripheral Artery Disease.JAHA.2019.https://www.ahajournals.org/doi/full/10.1161/JAHA.118.010890

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