ACUTE EFFECTS OF STATIC STRETCHING ON MUSCLE HARDNESS OF THE MEDIAL GASTROCNEMIUS MUSCLE BELLY IN HUMANS: AN ULTRASONIC SHEAR-WAVE ELASTOGRAPHY STUDY
ACUTE EFFECTS OF STATIC STRETCHING ON MUSCLE HARDNESS OF THE MEDIAL GASTROCNEMIUS MUSCLE BELLY IN HUMANS: AN ULTRASONIC SHEAR-WAVE ELASTOGRAPHY STUDY
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DOI：
10.1016/j.ultrasmedbio.2014.03.024
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发表时间：
2014-09-01
影响因子：
2.9
通讯作者：
Ichihashi, Noriaki
中科院分区：
文献类型：
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作者：
Nakamura, Masatoshi;Ikezoe, Tome;Ichihashi, Noriaki
本研究探讨了静态拉伸（SS）对作为肌肉硬度和刚度指标的剪切弹性模量的急性影响以及SS后剪切弹性模量变化与肌肉刚度变化之间的关系。患者为17名健康青年男性。在被动踝关节背屈过程中，使用测力计和超声检查前（前）和后（后）2分钟的SS。此外，剪切弹性模量测量的一种新的超声技术称为超声剪切波弹性成像。后SS值的肌肉刚度和剪切弹性模量显着低于前SS值。此外，斯皮尔曼等级相关系数表明剪切弹性模量的变化率和肌肉刚度的变化率之间存在显著相关性。这些结果表明，SS是一种有效的方法，降低剪切弹性模量以及肌肉刚度和剪切弹性模量测量使用剪切波弹性成像技术是有用的，在确定SS的影响。（电子邮件：st.kyoto-u.ac.jp）（C）2014年世界医学和生物学超声联合会。
This study investigated the acute effects of static stretching (SS) on shear elastic modulus as an index of muscle hardness and muscle stiffness and the relationship between change in shear elastic modulus and change in muscle stiffness after SS. The patients were 17 healthy young males. Muscle stiffness was measured during passive ankle dorsiflexion using a dynamometer and ultrasonography before (pre) and immediately after (post) 2 min of SS. In addition, shear elastic modulus was measured by a new ultrasound technique called ultrasonic shear wave elastography. The post-SS values for muscle stiffness and shear elastic modulus were significantly lower than the pre-SS values. In addition, Spearman's rank correlation coefficient indicated a significant correlation between rate of change in shear elastic modulus and rate of change in muscle stiffness. These results suggest that SS is an effective method for decreasing shear elastic modulus as well as muscle stiffness and that shear elastic modulus measurement using the shear wave elastography technique is useful in determining the effects of SS. (E-mail: Nakamura.masatoshi.55x@st.kyoto-u.ac.jp) (C) 2014 World Federation for Ultrasound in Medicine & Biology.