Quadriceps muscle tone, elasticity and stiffness in older males: Reliability and symmetry using the MyotonPRO
Quadriceps muscle tone, elasticity and stiffness in older males: Reliability and symmetry using the MyotonPRO
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DOI：
10.1016/j.archger.2012.03.005
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发表时间：
2012-09-01
影响因子：
4
通讯作者：
Stokes, Maria
中科院分区：
文献类型：
--
作者：
Aird, Lucy;Samuel, Dinesh;Stokes, Maria
背景：MyotonPRO（Myoton Ltd;伦敦）是一种用于测量肌肉机械特性（例如，G.其可靠性尚待确定。尽管对称性经常被用作临床评估中单侧异常的一种测量方法，但对健康老年人肢体间力学特性的对称性知之甚少。由于股四头肌对活动性很重要，因此选择了它进行本研究。目的：研究：（i）MyotonPRO新手用户的日间评估员可靠性;（ii）老年男性股四头肌力学特性的两侧对称性。方法：研究了20名健康、社区居住、右下肢占优势的男性（平均年龄71.7岁，范围65-82岁）。在受试者处于放松仰卧位的情况下，MyotonPRO连续施加两组10次轻击以诱导股直肌的肌肉振荡，从中获得减量（弹性）、频率（音调）和刚度的测量值。结果：重复测量具有很高的日内（组内相关系数ICC 3，1> 0.90）和日间（ICC 3，2> 0.70;两个测量集的平均值）信度。优势肌肉和非优势肌肉的肌肉力学性能之间没有统计学显著差异（0.05），从而表明symmetry.Conclusions：高内部评级可靠性建立MyotonPRO测量股四头肌在健康的老年男性，这是对称的两侧之间。这些发现表明，更大的研究是必要的，以建立正常的参考范围的数据与比较患者的肌肉异常。(C)2012爱思唯尔爱尔兰有限公司保留所有权利。
Background: The MyotonPRO (Myoton Ltd; London) is a new portable device for measuring muscle mechanical properties (e. g. tone) and its reliability has yet to be established. Little is known about between-limb symmetry of mechanical properties in healthy older people, despite symmetry often being used as a measure of unilateral abnormalities in clinical assessment. Since quadriceps is important for mobility, it was selected for the present study.Aims: To investigate: (i) between-day intra-rater reliability of a novice user of MyotonPRO; (ii) between-side symmetry of mechanical properties of quadriceps in older males.Methods: Twenty healthy, community dwelling, right-lower-limb-dominant males (mean age 71.7, range 65-82 years) were studied. With the participant in relaxed supine lying, the MyotonPRO applied two consecutive sets of 10 taps to induce muscle oscillations of rectus femoris, from which measurements of decrement (elasticity), frequency (tone), and stiffness were obtained. Tests were performed on two occasions at the same time and day of the week, one week apart.Results: Repeated measurements had very high within-day (intraclass correlation coefficient, ICC 3,1 > 0.90) and high between-day (ICC 3,2 > 0.70; mean of two measurement sets) reliability. There was no statistically significant difference between muscle mechanical properties of the dominant and nondominant muscles ( 0.05), thereby indicating symmetry.Conclusions: High intra-rater reliability was established for MyotonPRO measurements of quadriceps in healthy older males, which were symmetrical between sides. These findings indicate that larger studies are warranted to establish normal reference ranges of data with which to compare patients with muscle abnormalities. (C) 2012 Elsevier Ireland Ltd. All rights reserved.