www.trumpetdoctors.com

Saturday, June 24, 2017

Please enter your search query...
 
   
 

A New Method for Quantification of Musician's Dystonia: The Frequency of Abnormal Movements Scale

 
 

Copyright 2017, Mark Alan Wade

Primary Author: Spector, J.
Journal Title: Medical Problems of Performing Artists
Date Published: Dec-05
Language: English
Category: Nervous Disorders
Key Words: musician dystonia instrumental movement focal performance
Full Citation: Spector, June T., and Alice G. Brandfonbrener. A New Method for Quantification of Musician's Dystonia: The Frequency of Abnormal Movements Scale. Medical Problems of Performing Artists 20, no. 4 (December 2005): 157-162.
Full Abstract: There is currently, no validated objective method available for the quantification of musician's dystonia applicable to different types of instrumentalists. To address this issue, we devel­oped the Frequency of Abnormal Movements (FAM) scale and assessed its intra- and inter-rater correlation and concordance, inter­nal consistency, and responsiveness. We also compared the FAM scale to the arm dystonia disability scale (ADDS) and Burke-Fahn-Marsden (BFM) scale. Eighteen patients with musician's dystonia were videotaped playing their instruments before and after sensory motor retuning therapy. Two raters, blinded to the order of the ran­domized video segments, independently rated each segment using the FAM, ADDS, and BFM scales. Intra-rater correlation (intraclass correlation coefficient [ICC] = 0.92, Spearman's p ~ 0.87), concor­dance (weighted k 0.76), and internal consistency (Cronbach's a 0.96) for the FAM scale were good. Inter-rater correlation and con­cordance were better for the FAM scale (weighted k = 0.94, ICC 0.96, Spearman's p - 0.90) than for the ADDS or BFM scales (weighted k - 0.56-0.57, ICC scale = 0.81-0.82, Spearman's p -0.68-0.76). The decrease in the FAM after 1 week of sensory motor retuning therapy was less likely to be due to chance (p = 0.06) than the decrease in the ADDS or BFM scales (p = 0.21-0.53). The FAM scale may be useful for clinical and research evaluations of patients with musician's dystonia.