Dip Renata Maciulis, Cabrera Marcos As, Prato Sabrina Ferrari
Department of Public Health, Postgraduate Program in Public Health, State University of Londrina (UEL), Londrina, Paraná, Brazil.
Clin Interv Aging. 2017 Aug 18;12:1289-1296. doi: 10.2147/CIA.S126779. eCollection 2017.
Loss of muscle strength exerts a considerable impact on the quality of life and mortality of older adults. The present household survey study measured body composition and muscle strength with the aim of analyzing the roles of low lean mass, low muscle strength and obesity in stair negotiation ability and the effect of comorbidities on the relationship between body composition and functional capacity.
Body composition was assessed using bioelectrical impedance analysis and muscle strength was assessed with a hand grip dynamometer. The study population comprised individuals >55 years of age from a medium-sized Brazilian municipality. The sample included 451 participants.
A total of 368 subjects were interviewed; their ages varied from 56 to 91 years. Among males, low muscle strength was associated with stair negotiation difficulty independent of muscle mass, age and obesity but muscle mass was not. However, when we analyzed comorbidities and body composition jointly, chronic lower limb pain and obesity were independently associated with stair negotiation difficulty but body composition and age were not. Among women, after comorbidities were included into the model, low muscle strength and obesity remained associated with stair negotiation difficulty as chronic lower limb pain and depression. The relationship between muscle function and comorbidities is discussed in this article.
肌肉力量的丧失对老年人的生活质量和死亡率有相当大的影响。本家庭调查研究测量了身体成分和肌肉力量，旨在分析低瘦体重、低肌肉力量和肥胖在上下楼梯能力中的作用，以及合并症对身体成分与功能能力之间关系的影响。
使用生物电阻抗分析评估身体成分，用握力计评估肌肉力量。研究人群包括来自巴西一个中等规模城市的55岁以上个体。样本包括451名参与者。
共采访了368名受试者；他们的年龄在56至91岁之间。在男性中，低肌肉力量与上下楼梯困难相关，独立于肌肉量、年龄和肥胖，但肌肉量并非如此。然而，当我们联合分析合并症和身体成分时，慢性下肢疼痛和肥胖与上下楼梯困难独立相关，但身体成分和年龄并非如此。在女性中，将合并症纳入模型后，低肌肉力量和肥胖与上下楼梯困难仍然相关，慢性下肢疼痛和抑郁也是如此。本文讨论了肌肉功能与合并症之间的关系。
