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Journal of the Korean Academy of Rehabilitation Medicine 2001;25(6):987-992.
The Effect of Passive Stretching on the Spasticity of Ankle Plantar Flexor Muscles.
Lee, Seong Jae , Kwon, Bum Sun , Park, Choong Hyun
Department of Rehabilitation Medicine, College of Medicine, Dankook University, Korea.
수동적 근 신장이 족관절 저측굴근 경직에 미치는 효과
이성재, 권범선, 박충현
단국대학교 의과대학 재활의학교실
Abstract

Objective
This study was designed to evaluate the effect of stretching on decreasing spasticity of ankle plantar flexor muscles by biomechanical assessments.


Method
Twenty two ankle joints of nineteen patients with upper motor neuron lesion were included. The spasticity was assessed both clinically and biomechanically before and after stretching of ankle plantar flexor muscles by tilt table. For clinical assessment modified Ashworth scale (MAS) was used. For biomechanical assessment, ankle plantar flexor muscles were stretched isokinetically while EMG signals were recorded simultaneously and peak eccentric torque, stiffness index and stretch reflex threthold speed (SRTS) were measured.


Results
Two cases showed improvement in MAS after stretching but the others did not. SRTS of ankle plantar flexor was increased significantly while peak eccentric torque and stiffness index were unchanged.


Conclusion
Passive stretching of ankle plantar flexor muscles decreased the stretch threshold, that is a neural component of spasticity but it did not decrease the mechanical component of spasticity.

Key Words: Passive stretching, Ankle plantar flexor, Spasticity


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