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Artículo

Assessment of the energy-related cost function over a range of walking speeds

Ravera, Emiliano PabloIcon ; Crespo, Marcos Jose; Catalfamo Formento, Paola Andrea LuciaIcon
Fecha de publicación: 06/2019
Editorial: Springer Heidelberg
Revista: Biomechanics And Modeling In Mechanobiology
ISSN: 1617-7959
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Otras Ingeniería Médica

Resumen

Cost funtions are needed for calculation of muscle forces in musculoskeletal models. The behavior of the energy-related cost function, proposed by Praagman et al. (J Biomech 39(4):758?765, 2006. https://doi.org/10.1016/j.jbiomech.2004.11.034) (CFP), can be used as an optimization criteria in musculoskeletal models for studying gait. In particular, in this work, its performance is compared against two empirical phenomenological models at different walking speed conditions. Also, the sensitivity of the CFP function to model parameters, such as muscle mass, maximal isometric muscle force, optimal muscle fiber length and maximum muscle velocity of the contractile element, was analyzed. The obtained results showed that CFP presents different behavior (in terms of the normalized root-mean-squared deviation (NRMSD) and the coefficient of multiple correlation (CMC)) for different muscles. Also, it provided estimates with median of NRMSD between 0.176 and 0.299 and median of CMC between 0.703 and 0.865 both metrics for slow, free and fast walking speed, which could be considered as acceptable results. Furthermore, the results indicated that CFP is insensitive to changes in muscle mass and relatively sensitive to maximal isometric muscle force. However, CFP presented a noisy behavior on estimations of muscle energy rate for some muscle as compared to phenomenological models. Finally, estimations by CFP during gait are within the values obtained by the empirical phenomenological models.
Palabras clave: METABOLIC ENERGY RATE , MUSCULOSKELETAL MODEL , OPTIMIZATION CRITERIA , WALKING SPEED CONDITIONS
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info:eu-repo/semantics/restrictedAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/106437
DOI: http://dx.doi.org/10.1007/s10237-019-01180-y
Colecciones
Articulos (IBB)
Articulos de INSTITUTO DE INVESTIGACION Y DESARROLLO EN BIOINGENIERIA Y BIOINFORMATICA
Citación
Ravera, Emiliano Pablo; Crespo, Marcos Jose; Catalfamo Formento, Paola Andrea Lucia; Assessment of the energy-related cost function over a range of walking speeds; Springer Heidelberg; Biomechanics And Modeling In Mechanobiology; 6-2019; 1-9
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