Assessing muscle spasticity with Myotonometric and passive stretch measurements: validity of the Myotonometer.
Assessing muscle spasticity with Myotonometric and passive stretch measurements: validity of the Myotonometer.
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DOI：
10.1038/srep44022
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发表时间：
2017-03-10
影响因子：
4.6
通讯作者：
Zhou P
中科院分区：
文献类型：
--
作者：
Li X;Shin H;Li S;Zhou P
分别采用改良Ashworth量表（MAS）、肌张力测定法和重复被动牵张技术评估肱二头肌的痉挛状态。14名患有慢性偏瘫的受试者参加了这项研究。通过肌张力计测量的肌肉位移和顺应性以及分别以5 °/s和100 °/s的速度重复被动拉伸的阻力矩来量化痉挛。配对t检验显示痉挛侧肌肉位移和顺应性较对侧显著降低（肌肉位移：痉挛：4.84 ± 0.33 mm，对侧：6.02 ± 0.49 mm，p = 0.038;顺应性：痉挛：1.79 ± 0.12 mm/N，对侧：2.21 ± 0.18 mm/kg，p = 0.048）。被动牵张试验表明，与5 °/s相比，100 °/s时的总扭矩显著增加（Tt 5 = 2.82 ± 0.41Nm，Tt 100 = 6.28 ± 1.01Nm，p < 0.001）。相关性分析显示，牵张试验与肌张力计测量值之间存在显著的负相关性（r <-0.5，p < 0.05）。这项研究的结果提供了验证的肌张力技术和它的高灵敏度检查中风痉挛。
Spasticity of the biceps brachii muscle was assessed using the modified Ashworth Scale (MAS), Myotonometry and repeated passive stretch techniques, respectively. Fourteen subjects with chronic hemiplegia participated in the study. Spasticity was quantified by muscle displacements and compliance from the Myotonometer measurements and resistive torques from the repeated passive stretch at velocities of 5 °/s and 100 °/s, respectively. Paired t-tests indicated a significant decrease of muscle displacement and compliance in the spastic muscles as compared to the contralateral side (muscle displacement: spastic: 4.84 ± 0.33 mm, contralateral: 6.02 ± 0.49 mm, p = 0.038; compliance: spastic: 1.79 ± 0.12 mm/N, contralateral: 2.21 ± 0.18 mm/kg, p = 0.048). In addition, passive stretch tests indicated a significant increase of total torque at the velocity of 100 °/s compared with that of 5 °/s (Tt5 = 2.82 ± 0.41 Nm, Tt100 = 6.28 ± 1.01 Nm, p < 0.001). Correlation analysis revealed significant negative relationships between the stretch test and the Myotonometer measurements (r < −0.5, p < 0.05). Findings of this study provided validation of the Myotonometry technique and its high sensitivity in examination of spasticity in stroke.