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Development of wearable electromyogram for the physical fatigue detection during aerobic activity

Ahmad, Zulkifli and Jamaludin, Mohd. Najeb and Omar, Abdul Hafidz (2018) Development of wearable electromyogram for the physical fatigue detection during aerobic activity. Malaysian Journal Of Movement, Health & Exercise, 7 (1). pp. 15-25. ISSN 2600-9404

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Official URL: http://dx.doi.org/10.15282/mohe.v7i1.225

Abstract

Physical fatigue or muscle fatigue is a common problem that affects people who are vigorously involved in activities that require endurance movements. It becomes more complicated to measure the fatigue level when the dynamic motion of the activity is included. Therefore, this paper aims to develop a wearable device that can be used for monitoring physical fatigue condition during aerobic exercise. A 10-bit analog to digital converter (ADC) micro-controller board was used to process the data sensed by Ag/AgCl electrodes and real-time transmitted to the computer through Bluetooth's technology. The wearable was attached to the knee and connected to the biopotential electrodes for sensing the muscle movement and convert it into the electrical signal. The signal then processed by using the fourth-order Butterworth filter to filter the low-pass filter frequency and eliminate the noise signal. The results reveal that the fatigue level increased gradually based on the rating of perceived exertion (RPE), using 10-point Borg's scale, which is rated by the subject’s feeling. Both muscle's activities in lower limb rise as speed is increased, and it was also observed that the rectus femoris is functioning more than gastrocnemius due to the size of muscle fiber. Furthermore, it was established that the maximum volumetric contraction (MVC) could be used as a reference and indicator for measuring the percentage of contraction in pre-fatigue but not to fatigue induced experiment. However, this wearable device for EMG is promising to measure the muscle signal in the dynamic motion of movement. Consequently, this device is beneficial for a coach to monitor their athlete's level of exhaustion to be not over-exercise, which also can prevent severe injury.

Item Type:Article
Uncontrolled Keywords:physical fatigue, exercise, wearable device, EMG
Subjects:Q Science > Q Science (General)
Q Science > QH Natural history > QH301 Biology
Divisions:Biosciences and Medical Engineering
ID Code:81980
Deposited By: Yanti Mohd Shah
Deposited On:30 Sep 2019 17:00
Last Modified:08 Oct 2019 17:03

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