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Title: Self-perceived exertion level and objective evaluation of neuromuscular fatigue in a training session of orchestral violin players
Authors: Chan, RFM
Chow, CY
Lee, GPS
To, LK
Tsang, XYS
Yeung, SS 
Yeung, EW 
Issue Date: 2000
Source: Applied ergonomics, 2000, v. 31, no. 4, p. 335-341
Abstract: The aim of the study was to investigate the self-perceived exertion level and an objective measurement of muscle fatigue on violin players before and after a training session. Fourteen professional violin players volunteered in this study. Surveillance study was used to investigate the demographic characteristics, instrument playing background, playing habits variables and factors associated with playing-related musculoskeletal complaints (PRMCs). The subjective rating of the training-induced exertion was evaluated by the Borg scale ratings of perceived exertion (RPE). Surface electromyography (EMG) was used to record the fatigue level of the upper trapezius muscles before and after a training session. Medium frequency (MF) of the EMG signals was used to document the fatigue rate of this muscle. Descriptive statistics revealed a 79% prevalence rate of PRMCs with neck and shoulder region accounting for 57.1% of the areas reported. On the self-perceived exertion level associated with the training session, results indicated a significant increase in fatigue level (p=0.003) after the training session. Regression analysis and paired samples t-tests revealed no significant difference in the slopes of MF on both sides of trapezius muscle, before and after the training sessions. The disparity in the subjective perception with the objective findings indicated that the violinists' self-perceived exertion arises from multiple sources. The high prevalence of PRMCs in this profession warrants further ergonomic investigation of possible work-related risk factors.
Keywords: Electromyography
Perceived exertion
Publisher: Pergamon Press
Journal: Applied ergonomics 
ISSN: 0003-6870
EISSN: 1872-9126
DOI: 10.1016/S0003-6870(00)00008-9
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