高龄男性肌少症患者的活动能力与下肢肌肉质量和肌力的相关性研究

目的 探讨高龄（＞85岁）男性肌少症患者的活动能力与其下肢肌肉质量和下肢肌力的相关性。方法 根据亚洲肌少症工作组（AWGS）纳入和排除标准,入选2014年6月至2015年2月于解放军总医院门诊部查体的87名高龄肌少症男性患者,年龄（89.5±4.4）岁,平均相对骨骼肌肉质量指数（RASMMI）为（6.04±0.62）kg/m2。分别对研究对象进行身体成分测试、握力测试、下肢肌力测试（分别测试髂腰肌、股四头肌、胫前肌及腘绳肌的最大等长肌力）,并研究上述指标与活动能力测试如步速（6min最大步行速度测试）、计时“起立?行走”时间测试（TUGT）、5次起坐时间测试（FTSST）和闭目单腿站立测试的相关性。结果 步速、TUGT、FTSST、闭目单腿站立时间主要与年龄（r＝?0.567,P＝0.018;r＝0.742,P＝0.001;r＝0.632,P＝0.007;r＝?0.489,P＝0.047）、下肢肌肉质量（r＝0.489,P＝0.045;r＝?0.579,P＝0.012;r＝?0.641,P＝0.003;r＝0.476,P＝0.048）和下肢脂肪含量（r＝?0.517,P＝0.032;r＝0.513,P＝0.031;r＝0.528,P＝0.015;r＝?0.533,P＝0.012）相关。步速、TUGT、FTSST、闭目单腿站立时间与髂腰肌肌力（r＝0.313,P＝0.000;r＝?0.887,P＝0.000;r＝?0.666,P＝0.003;r＝0.515,P＝0.035）和与股四头肌肌力（r＝0.251,P＝0.017;r＝?0.775,P＝0.000;r＝?0.612,P＝0.013;r＝0.671,P＝0.002）相关。结论 高龄肌少症老人的活动能力与身体成分及下肢肌力相关程度较高。脂肪含量高而下肢肌肉质量低的老年人活动能力相对差;下肢肌力高的老年人活动能力较好,尤其以股四头肌、髂腰肌肌力为代表。     

Association of dietary protein intake with skeletal muscle mass in older adults: A systematic review

Protein supplementation has been shown to be effective in attenuating the loss of lean body mass and muscle mass in older adults; however, its benefits as dietary protein remain unclear. This systematic review of observational studies aimed to investigate the association of dietary protein intake with skeletal muscle mass (SM). Observational studies that investigated the association of dietary protein intake with SM in older adults were retrieved from MEDLINE, Web of Science and Cochrane-CENTRAL databases. Of the 26 analyses in the 17 studies, 18 showed a significant positive association. In cohort studies, 55.6% (five of nine analyses) showed a significant positive association. Of these, four analyses were adjusted for well-known confounding factors, used energy-adjusted protein intake, and used the amount of change of SM between baseline and follow-up as the outcome, with two of them showing a significant positive association. Although 69.2% (18 of 26 analyses) of the 17 studies showed a significant positive association between dietary protein intake and SM in older adults, most studies were cross-sectional and had at least one important methodological limitation. Therefore, we could not draw any conclusions. Thus, well-designed cohort studies are needed in future to identify the association between dietary protein intake and SM in older adults. Geriatr Gerontol Int 2021; 21: 1077–1083 .     

增龄相关的肌肉数量减少及功能下降相关研究进展

老年人多存在不同程度的肌肉数量减少和功能下降。增龄相关的肌肉数量减少和功能下降与患者的再住院率及总死亡率增加密切相关。本文将对增龄相关的肌肉数量减少和功能下降相关研究进行综述,重点阐述增龄过程中肌肉蛋白质合成和分解的测量、影响因素及分子调控机制。以期增进我们对老年人肌少症相关研究的了解,促进进一步研究的开展。     

老年2型糖尿病患者肌肉量减少与动脉粥样硬化的相关性分析

目的:探究老年2型糖尿病患者肌量减少与动脉粥样硬化的相关性。方法:选择年龄≥60岁的2型糖尿病患者322例,根据四肢骨骼肌指数(ASMI)分为肌量减少组(152例)与非肌量减少组(170例)。入组对象均进行体格检查、双能X线骨密度仪检查、颈部及下肢动脉超声检查、实验室检查。结果:在纳入的322例患者中,合并肌少症49例...