Forward dynamic optimization of handle path and muscle activity for handle based isokinetic wheelchair propulsion: A simulation study.
Comput Methods Biomech Biomed Engin
; 22(1): 55-63, 2019 Jan.
Article
em En
| MEDLINE
| ID: mdl-30398368
ABSTRACT
Push-rim wheelchair propulsion is biomechanically inefficient and physiologically stressful to the musculoskeletal structure of human body. This study focuses to obtain a new, optimized propulsion shape for wheelchair users, which is within the ergonomic ranges of joint motion, thus reducing the probability of injuries. To identify the propulsion movement, forward dynamic optimization was performed on a 3D human musculoskeletal model linked to a handle based propulsion mechanism, having shape and muscle excitations as optimization variables. The optimization resulted in a handle path shape with a circularity ratio of 0.95, and produced a net propulsion power of 34.7 watts for an isokinetic propulsion cycle at 50 rpm. Compared to push-rim propulsion, the compact design of the new propulsion mechanism along with the ergonomically optimized propulsion shape may help to reduce the risk of injuries and thus improve the quality of life for wheelchair users.
Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Cadeiras de Rodas
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Simulação por Computador
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Músculo Esquelético
/
Movimento (Física)
Tipo de estudo:
Prognostic_studies
Limite:
Adult
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Humans
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Male
Idioma:
En
Ano de publicação:
2019
Tipo de documento:
Article