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An Estimating Method of Contractile State Changes Come From Continuous Isometric Contraction of Skeletal Muscle  

Park Hyung-Jun (원광대학 전기공학과)
Lee Seung-Ju (원광대학 전기공학과)
Publication Information
The Transactions of the Korean Institute of Electrical Engineers D / v.52, no.1, 2003 , pp. 55-63 More about this Journal
Abstract
In this study was proposed that a new estimating method for investigation of contractile state changes which generated from continuous isometric contraction of skeletal muscle. The physiological changes(EMG, ECG) and the psychological changes by CNS(central nervous system) were measured by experiments, while the muscle of subjects contracted continuously with isometric contraction in constant load. The psychological changes were represented as three-step-change named 'fatigue', 'pain' and 'sick(greatly pain)' from oral test, and the method which compared physiological change with psychological change on basis of these three steps was developed. The result of analyzing the physiological signals, EMG and ECG signal changes were observed at the vicinity of judging point in time of psychological changes. Namely, it is supposed that contractile states have three kind of states pattern (stable, fatigue, pain) instead of two states (stable, fatigue).
Keywords
EMG; isometric contraction; contractile states; psychological change; fatigue;
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