Sensitivity of estimated muscle force in forward simulation of normal walking.
Sensitivity of estimated muscle force in forward simulation of normal walking.
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DOI:
10.1123/jab.26.2.142
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发表时间:
2010-05
影响因子:
1.4
通讯作者:
Higginson J
中科院分区:
文献类型:
--
作者:
Xiao M;Higginson J
Generic muscle parameters are often used in muscle-driven simulations of human movement estimate individual muscle forces and function. The results may not be valid since muscle properties vary from subject to subject. This study investigated the effect of using generic parameters in a muscle-driven forward simulation on muscle force estimation. We generated a normal walking simulation in OpenSim and examined the sensitivity of individual muscle to perturbations in muscle parameters, including the number of muscles, maximum isometric force, optimal fiber length and tendon slack length. We found that when changing the number muscles included in the model, only magnitude of the estimated muscle forces was affected. Our results also suggest it is especially important to use accurate values of tendon slack length and optimal fiber length for ankle plantarflexors and knee extensors. Changes in force production one muscle were typically compensated for by changes in force production by muscles in the same functional muscle group, or the antagonistic muscle group. Conclusions regarding muscle function based on simulations with generic musculoskeletal parameters should be interpreted with caution.
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DOI:
10.1115/1.1531112
发表时间:
2003-02-01
影响因子:
1.7
作者:
Thelen, DG
通讯作者:
Thelen, DG
影响因子:
4.3
作者:
LEHMAN, SL;STARK, LW
通讯作者:
STARK, LW
影响因子:
2.1
作者:
Redl, Christian;Gfoehler, Margit;Pandy, Marcus G.
通讯作者:
Pandy, Marcus G.
影响因子:
2.4
作者:
Thelen, DG;Anderson, FC
通讯作者:
Anderson, FC
影响因子:
2.4
作者:
Higginson, J. S.;Zajac, F. E.;Delp, S. L.
通讯作者:
Delp, S. L.