[논문]Biomechanical Assessment with Electromyography of Post-Stroke Ankle Plantar Flexor Spasticity

Kim, Deog Young; Park, Chang-il; Chon, Joong Son; Ohn, Suk Hoon; Park, Tae Hoon; Bang, In Keol

doi:10.3349/ymj.2005.46.4.546

Biomechanical Assessment with Electromyography of Post-Stroke Ankle Plantar Flexor Spasticity 원문보기

Yonsei medical journal, v.46 no.4, 2005년, pp.546 - 554

Kim, Deog Young (Department of Rehabilitation Medicine and Research Institute of Rehabilitation Medicine, Yonsei University College of Medicine, Seoul, Korea.) , Park, Chang-il (Department of Rehabilitation Medicine and Research Institute of Rehabilitation Medicine, Yonsei University College of Medicine, Seoul, Korea.) , Chon, Joong Son (Department of Rehabilitation Medicine, Hansarang Asan General Hospital, Asan, Korea.) , Ohn, Suk Hoon (Department of Rehabilitation Medicine and Research Institute of Rehabilitation Medicine, Yonsei University College of Medicine, Seoul, Korea.) , Park, Tae Hoon (Department of Rehabilitation Medicine and Research Institute of Rehabilitation Medicine, Yonsei University College of Medicine, Seoul, Korea.) , Bang, In Keol (Department of Rehabilitation Medicine, Inje University College of Medicine, Busan, Korea.)

Abstract ▼ AI-Helper

Spasticity has been defined as a motor disorder characterized by a velocity-dependent increase in tonic stretch reflex (muscle tone). Muscle tone consists of mechanical-elastic characteristics, reflex muscle contraction and other elements. The aims of this study were to determine whether to assess spasticity quantitatively, and to characterize biomechanical and electromyographic spasticity assessment parameters. These assessment parameters were described by investigating the correlation between clinical measures and the response to passive sinusoidal movement with consecutive velocity increments. Twenty post-stroke hemiplegic patients and twenty normal healthy volunteers were included in the study. Five consecutive sinusoidal passive movements of the ankle were performed at specific velocities (60, 120, 180, and 240 degrees/sec). We recorded the peak torque, work, and threshold angle using a computerized isokinetic dynamometer, and simultaneously measured the rectified integrated electromyographic activity. We compared these parameters both between groups and between different velocities. The peak torque, threshold angle, work, and rectified integrated electromyographic activity were significantly higher in the post-stroke spastic group at all angular velocities than in the normal control group. The threshold angle and integrated electromyographic activity increased significantly and linearly as angular velocity increased, but the peak torque and work were not increased in the post-stroke spastic group. Peak torque, work, and threshold angle were significantly correlated to the Modified Ashworth scale, but the integrated electromyographic activity was not. The biomechanical and electromyographic approach may be useful to quantitatively assess spasticity. However, it may also be very important to consider the different characteristics of each biomechanical parameter.

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참고문헌 (33)

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Biomechanical Assessment with Electromyography of Post-Stroke Ankle Plantar Flexor Spasticity 원문보기

Abstract ▼ AI-Helper

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참고문헌 (33)

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