Resumen
Purpose: To evaluate lower extremity mechanics and muscle activation associated with the sit-to-stand transfer using a portable lifting-seat device and to compare these data to an unassisted transfer in healthy young and older adults. Methods: Bilateral lower extremity and low back musculature electromyography, three-dimensional leg and trunk motion, and ground reaction forces were recorded from 10 young (mean age = 25) and 10 older (mean age = 69) adults during five trials of (i) no assist and (ii) assisted transfers. Data were time normalized to represent the period of seat-off to standing. Peak sagittal plane joint angles, moments, and muscle activity profiles were calculated. Analysis of variance models was used to test for main effects and interactions (α = 0.05). Results: Trunk, hip, and knee angles were significantly reduced and dorsiflexion increased with assisted transfer (p < 0.05). Peak hip and ankle joint moments were reduced (p < 0.05) and no change found in knee moments (p > 0.05). Peak muscle activity was lower during the assisted transfer (p < 0.05). Seat device effects were similar between age groups. Older adults used higher relative muscle activation. Conclusion: Variables indicative of sit-to-stand functional demand were reduced with lifting-seat device use. Data provide a framework for future recommendations on product prescription, use, and research pertaining to the advancement of adaptive seating.
Idioma original | English |
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Páginas (desde-hasta) | 158-165 |
Número de páginas | 8 |
Publicación | Disability and Rehabilitation: Assistive Technology |
Volumen | 11 |
N.º | 2 |
DOI | |
Estado | Published - feb. 17 2016 |
Nota bibliográfica
Publisher Copyright:© 2014 Informa UK Ltd.
ASJC Scopus Subject Areas
- Physical Therapy, Sports Therapy and Rehabilitation
- Orthopedics and Sports Medicine
- Biomedical Engineering
- Rehabilitation
- Speech and Hearing