Volume 21, Number 2 (Scientific Journal of Hamadan University of Medical Sciences-Summer 2014)                   Sci J Hamadan Univ Med Sci 2014, 21(2): 131-136 | Back to browse issues page


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Nakhostin Ansari N, Naghdi S, Jamshidi A A, Entezary E, Tabatabaei A, Jannat D. Relationship between the Modified Modified Ashworth Scale and the Biomechanical Measure in Assessing Knee Extensor Muscle Spasticity in Patients with Post-Stroke Hemiparesia:A Pilot Study. Sci J Hamadan Univ Med Sci . 2014; 21 (2) :131-136
URL: http://sjh.umsha.ac.ir/article-1-92-en.html

Professor, Department of Physiotherapy, School of Rehabilitation, Tehran University of Medical Sciences & Health Services, Tehran, Iran. , nakhostin@sina.tums.ac.ir
Abstract:   (1281 Views)

Introduction & Objective: The Modified Modified Ashworth Scale (MMAS) is a clinical meas-ure that has been recently developed for the assessment of muscle spasticity. There is a dearth of research on the validity of the MMAS. The aim of the present study was to investi-gate the relationship between the MMAS and the biomechanical measure of work-velocity slope in assessing knee extensor muscle spasticity in patients with hemiparesia.

 Materials & Methods: Fourteen patients with post-stroke hemiparesia were included in this cross sectional study. Knee extensor spasticity was assessed with MMAS. An isokinetic dy-namometer was used to impose knee passive flexion with the angular velocity of 10, 30, 60, and 90 °/Sec to measure Torque-angle data. Work (Joule) was calculated at each velocity to determine the slope of the work-velocity curves as the biomechanical measure of muscle spasticity.

 Results: The mean work decreased as the velocity increased but was not statistically signifi-cant (P = 0.07). The mean slope was – 0.35 [J /(°/Sec)]. There was no significant correlation between the MMAS and the work-velocity slope (r =0.31, P = 0.28).

Conclusion: There was no significant relationship between the MMAS and the biomechanical measure of work-velocity slope. Further studies with larger sample size are suggested.

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Type of Study: Original | Subject: Special

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