Assessing muscle spasticity with Myotonometric and passive stretch measurements: validity of the Myotonometer

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...

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Bibliographic Details
Published in:Scientific reports 2017-03, Vol.7 (1), p.44022-44022, Article 44022
Main Authors: Li, Xiaoyan, Shin, Henry, Li, Sheng, Zhou, Ping
Format: Article
Language:English
Subjects:
692/53/2421
692/699/375/374
Aged
Biomechanical Phenomena
Biometry
Compliance
Correlation analysis
Elasticity
Female
Hemiplegia
Hemiplegia - complications
Humanities and Social Sciences
Humans
Male
Middle Aged
multidisciplinary
Muscle Spasticity - complications
Muscle Spasticity - diagnosis
Muscle, Skeletal - physiopathology
Muscles
Myography
Science
Spasticity
Stroke
Torque
Velocity
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Summary: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 (T t5  = 2.82 ± 0.41 Nm, T t100  = 6.28 ± 1.01 Nm, p 
ISSN:2045-2322
2045-2322
DOI:10.1038/srep44022