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KMID : 1137820230440030218
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의공학회지
2023 Volume.44 No. 3 p.218 ~ p.224
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Analysis of the Coordination Relationship and Muscle Fatigue of Agonist and Synergist During Dumbbell Side Lateral Raise Using Biosignals
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Kim Jong-Min
Song Chang-Hyun
Choi Jun-Won
Kim Han-Sung
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Abstract
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This study aimed to analyze the coordination of muscle and muscle fatigue between biceps, lateral deltoid, and anterior deltoid during dumbbell side lateral raise using bio-signal. One male subject performed dumbbell side lateral raise with 3% of 1RM dumbbell at the rate of 30bpm until failure (8 minutes). While performing, ECG were recorded to observe the participant's performance. EMG were recorded from biceps, lateral deltoid, and anterior del- toid for observing coordination and fatigue. ECG were analyzed in time and frequency domain to observe Heart rate, normLF, normHF. Changes in heart rate, normLF, and normHF indicate that the sympathetic nervous system is acti- vated, while changes in median frequency (MDF) indicate the occurrence of muscle fatigue. Moreover, the coor- dination relationship of muscle changed. The correlation of MDF between each muscles indicated that lateral deltoid is associated with biceps and anterior deltoid. These results showed that our study can contribute to improving understanding of muscle fatigue and muscle coordination relationships.
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KEYWORD
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Muscle fatigue, Muscle coordination, Median frequency, Electromyography
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