Instituto de Diagnóstico e Investigaciones Metabólicas (IDIM), Buenos Aires, Argentina.
Cátedra de Osteología y Metabolismo Mineral, Universidad del Salvador, Buenos Aires, Argentina.
Medicina (B Aires). 2021;81(1):47-53.
Recently, a new consensus of the European Working Group on Sarcopenia in Older People (EWSOP2) recommended new cut-off points for the diagnosis of sarcopenia. The aim of the present manuscript was to assess the prevalence of sarcopenia in postmenopausal women and its relationship with bone mineral density, falls and fragility fractures according to EWGSOP2. In this cross-sectional study, 250 ambulatory postmenopausal women over 60 years of age were included. Lumbar spine and hip bone mineral density (BMD) and whole-body composition were assessed by dual-energy X-ray absorptiometry (DXA). Muscle strength was evaluated by handgrip dynamometry and physical performance by a 4-m walk gait speed and five-repetition sit-to-stand test. Sarcopenia was defined according to EWGSOP2 as low muscle strength (handgrip) and low muscle mass (appendicular skeletal muscle mass index by DXA). A sarcopenia prevalence of 4% was found in the whole group increasing with age being 12.5% in = 80- year-old. A higher percentage of falls, prevalence of osteoporosis and vertebral fractures were found in the sarcopenic group. Sarcopenia increased 6.0-fold the likelihood of having a fragility fracture. Women with sarcopenia had significantly lower femoral neck BMD and higher frequency of falls and vertebral fractures. According to our results, identifying patients with sarcopenia might be a useful tool to detect adults at higher risk of falls and fractures.
最近,欧洲老年人肌肉减少症工作组(EWSOP2)达成了新的共识,建议采用新的截断值来诊断肌肉减少症。本研究旨在根据 EWGSOP2 评估绝经后妇女肌肉减少症的患病率及其与骨密度、跌倒和脆性骨折的关系。在这项横断面研究中,纳入了 250 名 60 岁以上的门诊绝经后妇女。通过双能 X 线吸收法(DXA)评估腰椎和髋部骨密度(BMD)和全身成分。通过握力计评估肌肉力量,通过 4 米步行速度和 5 次重复坐立站测试评估身体机能。根据 EWGSOP2,肌肉减少症定义为低肌肉力量(握力)和低肌肉质量(DXA 测量的四肢骨骼肌质量指数)。整个组别的肌肉减少症患病率为 4%,随着年龄的增长而增加,80 岁及以上的患病率为 12.5%。在肌肉减少症组中,跌倒和骨质疏松症及椎体骨折的发生率更高。肌肉减少症使脆性骨折的可能性增加了 6 倍。患有肌肉减少症的女性股骨颈 BMD 显著降低,跌倒和椎体骨折的频率更高。根据我们的结果,识别出患有肌肉减少症的患者可能是一种有用的工具,可以发现有更高跌倒和骨折风险的成年人。