Electromyographical indication of muscular fatigue in occupational field studies

摘要: Abstract Surface electromyography offers a valuable tool for the indication of muscular fatigue in occupational field studies. For this purpose, time course electromyogram (EMG) has to be analysed, order detect typical fatigue-induced changes such as an increase EMG amplitude or shift spectral distribution towards lower frequencies. Such procedures need detailed knowledge about actual activity person and muscle under test total working time. This can attained by encoding during work recording electrical code signal together with electrophysiological signals. fatigue, EMGs situations connected similar load should only compared, since well spectrum do not depend upon state, but also produced force. demand fulfilled (i) interrupting performing contractions known force predefined body posture (ii) comparing certain reference activity. (iii) In recently developed approach joint analysis (JASA) are considered simultaneously. method permits discrimination between force-related changes. Using procedure, attributed categories like recovery decrease production test. Applications from studies manual materials handling weaving mill, price at scanner checkouts supermarket performance surgical using endoscopic operation techniques urology demonstrate appropriateness physiology ergonomics. Nevertheless, commonly used measures left primarily related activation its propagation along fibres. Their connection reduction generating capacity includes complex physiological implications. Therefore, further development indicators which more directly is recognized. Relevance industry health ergonomics needed, activities inducing performed limited time, only, quality influenced negatively. Electromyography tools appropriate assessment ergonomic design measures.