Saadeddine Dana, Itani Leila, Rossi Andrea P, Pellegrini Massimo, El Ghoch Marwan
Department of Nutrition and Dietetics, Faculty of Health Sciences, Beirut Arab University, P.O. Box 11-5020 Riad El Solh, Beirut 11072809, Lebanon.
Healthy Aging Center, Department of Medicine, Division of Geriatric, University of Verona, 37126 Verona, Italy.
Diseases. 2021 Mar 20;9(1):23. doi: 10.3390/diseases9010023.
The reduction in skeletal muscle mass (SMM) is a common phenomenon in older adults. It is associated with several diseases, a reduction in physical fitness, longer periods of hospitalization and high rates of mortality. We aimed to identify the reliability of simple tools for screening for reduced SMM among older adult males in Lebanon. The Tanita MC-780MA bioimpedance analyzer (BIA) was used to assess body composition in a population of 102 community-dwelling elderly males with overweight or obesity, in order to be then categorized as with or without reduced SMM. Participants also performed the handgrip strength test and the 4 m gait speed test. Of the total sample of 102 participants (mean age 67.4 ± 6.96 years; BMI 30.8 6 ± 4.04 kg/m), 32 (31.4%) met the criteria for reduced SMM. Partial correlation analysis showed that handgrip strength (ρ = 0.308, = 0.002) and 4 m gait speed (ρ = 0.284, = 0.004) were both associated with low SMM. Receiver operating characteristic (ROC) curve analysis identified discriminating cut-off points of 1.1 m/s for the 4 m gait speed test and 32.0 kg for the handgrip strength test. Our study showed that participants displayed a substantial prevalence of reduced SMM. Reduced 4 m gait speed and handgrip strength were associated with low SMM. Clear cut-off points for strength and functional tests for screening for this condition in Lebanese older men were identified.
骨骼肌质量（SMM）下降是老年人中的常见现象。它与多种疾病、体能下降、住院时间延长和高死亡率相关。我们旨在确定在黎巴嫩老年男性中筛查SMM降低的简单工具的可靠性。使用百利达MC - 780MA生物电阻抗分析仪（BIA）对102名超重或肥胖的社区居住老年男性进行身体成分评估，以便随后将其分类为有无SMM降低。参与者还进行了握力测试和4米步速测试。在102名参与者的总样本中（平均年龄67.4±6.96岁；BMI 30.86±4.04kg/m²），32人（31.4%）符合SMM降低的标准。偏相关分析表明，握力（ρ = 0.308，P = 0.002）和4米步速（ρ = 0.284，P = 0.004）均与低SMM相关。受试者工作特征（ROC）曲线分析确定4米步速测试的判别临界点为1.1米/秒，握力测试为32.0千克。我们的研究表明，参与者中SMM降低的患病率很高。4米步速降低和握力降低与低SMM相关。确定了黎巴嫩老年男性中用于筛查这种情况的力量和功能测试的明确临界点。
