The Role of handedness and extrainstrumental burdens on the course of musicians' dystonia.

IF 2.5 4区医学 Q2 CLINICAL NEUROLOGY

Journal of Movement Disorders Pub Date : 2025-06-15 DOI:10.14802/jmd.25064

J Doll-Lee, E Passarotto, Altenmüller E, Lee A

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Abstract

Background: This study investigates the impact of extrainstrumental workload on musician's hand dystonia (MD) and its relation to playing ability by testing two hypotheses: 1) the dominant hand is more severely affected at dystonia-onset; 2) improvement during treatment depends on whether the dominant or non-dominant hand is affected.

Methods: 151 patients with dominant-hand MD and 92 with non-dominant hand MD were assessed regarding their playing ability at dystonia-onset (T0) and after treatment (T1).

Results: There was no significant difference in playing-ability at onset between groups. Significant improvement and a greater change in playing-ability was observed in the dominant-hand group. We found no difference in the proportional frequency of right-handed and left-handed individuals in the group of patients affected on the right or left side respectively.

Conclusion: These findings suggest that handedness does not influence MD localization, but the prognosis is more favorable for those with dominant hand dystonia, potentially due to metaplasticity effects.

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手性和乐器外负担在音乐家肌张力障碍过程中的作用。

背景：本研究通过检验两个假设，探讨乐器外负荷对音乐家手部肌张力障碍的影响及其与演奏能力的关系：1)优势手在肌张力障碍发作时受到更严重的影响；2)治疗期间的改善取决于是否影响主手或非主手。方法：对151例优势手MD患者和92例非优势手MD患者在肌张力障碍发作时（T0）和治疗后（T1）的演奏能力进行评估。结果：两组儿童起病时的游戏能力无显著差异。在优势手组中观察到明显的改善和更大的游戏能力变化。我们发现右撇子和左撇子个体在分别影响右侧或左侧的患者组中的比例频率没有差异。结论：这些研究结果表明，惯用手不影响MD定位，但对于优势手肌张力障碍患者预后更有利，可能是由于元可塑性效应。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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