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KMID : 1211620160110020001
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Journal of the Korean Society of Physical Medicine
2016 Volume.11 No. 2 p.1 ~ p.11
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Immediate Effects of Local Vibration on Ankle Plantarflexion Spasticity and Clonus of both the Gastrocnemius and Soleus in Patients with Spinal Cord Injury
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Ahn Mun-Cheol
Song Chang-Ho
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Abstract
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PURPOSE: This study was conducted to assess the effects of local vibration on ankle plantarflexion spasticity and clonus in patients with spinal cord injury.
METHODS: The subjects were 14 inpatients with complete or incomplete spinal cord injury (SCI) whose scores were higher than 1 on the Modified Ashworth Scale (MAS) and Spinal Cord Assessment Tool for Spastic Reflexes (SCATS) scale of paraplegia. A randomized single-blind cross-over design was used. Vibration treatment involved a single application of vibration for 10 min in the sitting position, and placebo treatment involved the patient remaining in the sitting position for 10 min. One day after treatment, vibration and placebo treatments were crossed over. Spasticity was measured by using the MAS, and resistance force, by using a hand-held dynamometer; clonus was gauged by using the SCATS scale and clonus burst duration. Additionally, the burst maximal frequency and voluntary ankle dorsiflexion angle of the triceps surae were measured.
RESULTS: The application of vibration treatment in the sitting position significantly reduced the MAS scores and resistance force, but significantly increased the dorsiflexion angle of the ankle joint (p<0.05). Furthermore, the vibration treatment diminished the clonus burst duration and SCATS score significantly (p<0.05). Although it reduced the burst maximal frequency of the lateral gastrocnemius and medial soleus, this was significant only for the lateral gastrocnemius. The placebo treatment did not significantly affect any of the test parameters.
CONCLUSION: Vibration treatment in the sitting position was effective in cases of spasticity and clonus caused by SCI.
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KEYWORD
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Spinal cord injuries, Vibration, Muscle spasticity, Ankle
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