A wearable electromyography-controlled functional electrical stimulation system improves balance, gait function, and symmetry in older adults
Autor: | Hyung-cheol Shin, Joon-Young Jung, Dong-Woo Lee, Hwang-Jae Lee, Hye-Kang Park, Wan-Hee Lee |
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Rok vydání: | 2021 |
Předmět: |
medicine.medical_specialty
Biomedical Engineering Biophysics Health Informatics Bioengineering Electric Stimulation Therapy Electromyography Biomaterials Muscle coactivation 03 medical and health sciences Wearable Electronic Devices 0302 clinical medicine Physical medicine and rehabilitation Gait (human) medicine Functional electrical stimulation Humans 030212 general & internal medicine Muscle Skeletal Gait Balance (ability) Aged medicine.diagnostic_test business.industry Coactivation Electric Stimulation medicine.anatomical_structure Gait analysis Cadence business 030217 neurology & neurosurgery Information Systems |
Zdroj: | Technology and health care : official journal of the European Society for Engineering and Medicine. 30(2) |
ISSN: | 1878-7401 |
Popis: | BACKGROUND: Wearable technologies have been developed for healthy aging. The technology for electromyography (EMG)-controlled functional electrical stimulation (FES) systems has been developed, but research on how helpful it is in daily life has been insufficient. OBJECTIVE: The purpose of this study was to investigate the effect of the EMG-controlled FES system on muscle morphology, balance, and gait in older adults. METHODS: Twenty-nine older adults were evaluated under two randomly assigned conditions (non-FES and FES assists). Muscle morphology, balance, gait function, and muscle effort during gait were measured using ultrasonography, a physical test, a gait analysis system, and EMG. RESULTS: The EMG-controlled FES system improved gait speed by 11.1% and cadence by 15.6% (P< 0.01). The symmetry ratio of the bilateral gastrocnemius was improved by 9.9% in the stance phase and 11.8% in the swing phase (P< 0.05). The degrees of coactivation of the knee and ankle muscles were reduced by 45.1% and 50.5%, respectively (P< 0.05). Balance improved by 6–10.7% (P< 0.01). CONCLUSION: The EMG-controlled FES system is useful for balance and gait function by increasing muscle symmetry and decreasing muscle coactivation during walking in older adults. |
Databáze: | OpenAIRE |
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