PHYSIOLOGICAL PREDICTION OF MUSCLE FORCES .1. THEORETICAL FORMULATION
PHYSIOLOGICAL PREDICTION OF MUSCLE FORCES .1. THEORETICAL FORMULATION
复制标题
DOI：
10.1016/0306-4522(91)90012-d
复制
发表时间：
1991-01-01
期刊：
影响因子：
3.3
通讯作者：
CHAO, EYS
中科院分区：
文献类型：
--
作者：
KAUFMAN, KR;AN, KN;CHAO, EYS
描述了一种预测肌力的生理模型。运用刚体力学和肌肉骨骼生理学来描述节段模型和肌肉模型的动力学。未知的肌肉和关节接触力超过了平衡方程，导致了一个不确定的问题。利用数学最优化来解决不确定性，建模过程完全依赖于已建立的生理原理。描述肌肉解剖和身体结构的数据也包括在内。采用定义肌肉的力-长度-速度-激活关系的模型。肌肉产生的力被认为与其最大应力、生理横截面积、激活及其功能配置(包括肌肉结构、肌肉长度、收缩速度和被动张力)成正比。这些因素被合并到限制每一块肌肉的力的不等式中。提出了以最小肌肉活动作为确定肌力的优化标准。
A physiological model for predicting muscle forces is described. Rigid-body mechanics and musculoskeletal physiology are used to describe the dynamics of the segment model and muscle model. Unknown muscle and joint contact forces outnumber the equilibrium equations resulting in an indeterminate problem. Mathematical optimization is utilized to resolve the indeterminacy.The modeling procedure relies entirely on established physiological principles. Data describing the muscle anatomy and body structures are included. A model defining the force-length-velocity-activation relationship of a muscle is adopted. The force a muscle produces is assumed to be proportional to its maximum stress, physiological cross-sectional area, activation, and its functional configurations including the muscle architecture, muscle length, contracting velocity, and passive tension. These factors are incorporated into inequality equations which limit the force for each muscle. Minimal muscular activation is forwarded as the optimization criterion for muscle force determination.