Verification of Industrial Worker Walking Efficiency with Wearable Hip Exoskeleton
APPLIED SCIENCES-BASEL(2023)
Abstract
Featured Application This study can help prevent muscle fatigue and promote efficient energy consumption in industrial workers using a wearable hip-exoskeleton device.Abstract In highly mobile workplaces, wearable walking-assistant devices reduce muscle fatigue in workers' lower extremities and increase energy efficiency. In our study, we verify this following the development of an ultralight wearable hip exoskeleton for industrial workers. Ten healthy male adults participated in this study, and their muscle activity, muscle fatigue, and energy expenditure were compared with and without a device while walking on a treadmill and going up stairs. While walking on a treadmill with the assistive device, muscle fatigue in the gastrocnemius decreased by 79.5%, and oxygen uptake and energy expenditure per minute decreased by 7.9% and 7.4%, respectively. While climbing stairs with the assistive device, muscle fatigue of the tibialis anterior decreased by 83.5%, average muscle activity of the rectus femoris, semitendinosus, and gastrocnemius muscles decreased significantly, and oxygen uptake and energy expenditure decreased by 14% and 12.9% per minute, respectively. We confirm that an ultralight wearable hip exoskeleton helps the wearer reduce lower-limb muscle fatigue and use metabolic energy more efficiently. The results of this study are intended as basic data to expand the use of ultralight wearable hip exoskeletons at industrial sites and to improve device performance.
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Key words
hip exoskeleton,industrial workers,walking efficiency,muscle fatigue,energy expenditure
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