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04/02/2007 - The effect of electro-acupuncture on spasticity of the wrist joint in chronic stroke survivors.

Country: U.S.A

Institute: Department of Physical Therapy and Rehabilitation Sciences, University of Kansas Medical Center, Kansas City, KS.

Author(s): Mukherjee M, McPeak LK, Redford JB, Sun C, Liu W.

Abstract:

The effect of electro-acupuncture on spasticity of the wrist joint in chronic stroke survivors.

OBJECTIVE: To quantitatively assess the change in spasticity of the impaired wrist joint in chronic stroke patients after electro-acupuncture treatment.

DESIGN: Crossover design.

SETTING: University medical center research laboratory.

PARTICIPANTS: Seven chronic stroke subjects (age, 63.14+/-7.01y).

INTERVENTION: Participants received two 6-week treatment regimens: combined electro-acupuncture and strengthening twice a week, and strengthening twice a week only. Muscle strength and spasticity of the wrist joint were quantified by using the Biodex multijoint System 3 Pro. Electro-acupuncture was given through a commercial electro-acupuncture device.

MAIN OUTCOME MEASURES: Velocity sensitivity of averaged speed-dependent reflex torque (VASRT); segmented averaged speed-dependent reflex torque (SASRT); Modified Ashworth Scale (MAS) scores; and integrated electromyographic activity of the affected wrist flexors during passive stretch of the affected wrist joint.

RESULTS: VASRT was reduced significantly in the combined treatment group (P=.02) after the 6-week period, but not in the strengthening-only group (P=.23); however, no significant immediate effect of electro-acupuncture was observed (P>.05). MAS scores also showed a significant reduction (P<.01). SASRT did not differ significantly across different positions of the joint or across velocity; however, significant differences were present between the 2 treatment groups (P<.05) for each position and at all the velocities except at 20 degrees /s. Integrated electromyographic activity showed a trend for reduction after the combined treatment.

CONCLUSIONS: A combination of electro-acupuncture and muscle strengthening exercise for 6 weeks significantly reduced spasticity. The effect of spasticity reduction was consistent across different joint positions and different velocities of passive stretch.

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Pubmed ID: Electro, Stroke, Wrist, Spasticity.