Rodrigo Silvia, Garcia Isabel, Franco Marian, Alonso-Vazquez Ana, Ambrosio Jorge
Medical Technology Cabinet, National University of San Juan, CP5400, Argentina.
Annu Int Conf IEEE Eng Med Biol Soc. 2010;2010:4858-61. doi: 10.1109/IEMBS.2010.5627427.
A phenomenological model of muscle energy expenditure developed in part I of the paper, is utilized as a physiological cost function to estimate the muscle forces during normal locomotion. The model takes into account muscular behaviors typically observed during human gait, such as submaximal activation, variable muscular contraction conditions and muscular fiber type. The solution of the indeterminate biomechanical problem is obtained by integrating multibody dynamics and the global static optimization technique that considers the whole motion. The results for an application case indicate the important role of muscle groups in coordinating multijoint motion with the objective of minimizing metabolic costs of transport during locomotion.
本文第一部分所建立的肌肉能量消耗现象学模型，被用作一种生理成本函数，以估计正常行走过程中的肌肉力量。该模型考虑了人类步态中通常观察到的肌肉行为，如次最大激活、可变的肌肉收缩条件和肌肉纤维类型。通过整合多体动力学和考虑整个运动的全局静态优化技术，得到了不确定生物力学问题的解。一个应用案例的结果表明，肌肉群在协调多关节运动中起着重要作用，目的是使行走过程中运输的代谢成本最小化。
