Abstract
The increase of surface electromyography (sEMG) root-mean-square (RMS) is very frequently used to determine fatigue. However, as RMS is also influenced by muscle force, its effective usage as indicator of fatigue is mainly limited to isometric, constant force tasks. This research develops a simple method to preclude the effect of muscle force, hereby estimates the EMG amplitude response exclusively to fatigue with RMS. Experiment was carried out on the biceps brachiis of 15 subjects (7males, 8 females) during sustained static maximum voluntary contractions (sMVC). Result shows that the sEMG RMS response to fatigue increases to 21.27 % while muscle force decreasing to 50 % MVC, which implies that more and more extra effort is needed as muscle fatigue intensifies. It would be promising to use the RMS response exclusively to fatigue as an indicator of muscle fatigue.
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Acknowledgments
This work was supported by the National Natural Science Foundation of China under Grant numbers 71101079 and 71471095, by the Tsinghua University Initiative Scientific Research Program under Grant number 20131089234, by Chinese State Scholarship Fund, and by INTERWEAVE Project (Erasmus Mundus Partnership Asia-Europe) under Grants number IW14AC0456 and IW14AC0148.
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Chang, J., Chablat, D., Bennis, F., Ma, L. (2016). Estimating the EMG Response Exclusively to Fatigue During Sustained Static Maximum Voluntary Contraction. In: Goonetilleke, R., Karwowski, W. (eds) Advances in Physical Ergonomics and Human Factors. Advances in Intelligent Systems and Computing, vol 489. Springer, Cham. https://doi.org/10.1007/978-3-319-41694-6_4
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