Echo intensity is negatively associated with functional capacity in older women
Echo intensity is negatively associated with functional capacity in older women
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DOI：
10.1007/s11357-014-9708-2
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发表时间：
2014-10-01
期刊：
影响因子：
--
通讯作者：
Pinto, Ronei Silveira
中科院分区：
文献类型：
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作者：
Rech, Anderson;Radaelli, Regis;Pinto, Ronei Silveira
肌肉质量是老年人功能谱的重要组成部分，以往的研究表明，肌肉数量和质量对老年人肌肉力量的影响是独立的。本研究旨在验证老年活跃女性股四头肌肌肉质量(通过比张力和回声强度(EI)分析)和膝关节伸肌扭矩发展速度(RTD)与功能表现之间的关系。45名健康、活跃的老年妇女(70.28+/-6.2)自愿参加了这项研究。超声测定股四头肌厚度和EI。膝关节伸展等长峰力矩和RTD由最大等长自主收缩曲线获得。采用30-S仰卧起坐(30SS)试验和常规步速试验评定功能。股直肌EI与30SS呈显著负相关(r=-0.505，P
Muscle quality is an important component of the functional profile of the elderly, and previous studies have shown that both muscle quantity and quality independently contribute to muscle strength of the elderly. This study aimed to verify the association between quadriceps femoris muscle quality, analyzed by specific tension and echo intensity (EI), and rate of torque development (RTD) of the knee extensor muscles with the functional performance in elderly active women. Forty-five healthy, active elderly women (70.28 +/- 6.2) volunteered to participate in this study. Quadriceps femoris muscle thickness and EI were determined by ultrasonography. Knee extension isometric peak torque and RTD were obtained from maximal isometric voluntary contraction curves. The 30-s sit-to-stand-up (30SS) test and usual gait speed (UGS) test were applied to evaluate functional performance. Rectus femoris EI presented a significant negative correlation with 30SS (r=-0.505, P