Development of Consumer-Friendly Surface Electromyography System for Muscle Fatigue Detection

In this study, a low-cost, wireless, and smartphone-controlled surface electromyography (EMG) system was designed developed for consumers, the recorded EMG signals were evaluated against reference laboratory during fatiguing contraction. Using commercially available inexpensive components, components of signal-acquisition circuit optimized, microcontroller combined with Bluetooth module. The then converted from analog to digital transmitted smartphone via serial communication. biceps brachii six healthy subjects separately using two systems sustained submaximal isometric contraction until endurance limit reached. root mean square (RMS) power frequency (MPF) calculated. results indicated that both exhibited characteristic progressive increase in EMGRMS decrease EMGMPF relative agreement between systems, assessed by intraclass correlation coefficient (ICC), excellent (ICC 0.933, P < 0.001) moderate 0.662, =0.049). cost sensor hardware ¥ 8,486 per unit. proposed consumer-friendly system, which is highly versatile terms wireless accessibility, can detect phenomenon associated increased amplitude low-frequency muscle fatigue magnitude similar systems.