Pandy M G, Anderson F C
Department of Kinesiology and Biomedical Engineering Program, University of Texas at Austin, 78712-D3700, USA.
Phonetica. 2000 Apr-Dec;57(2-4):219-28. doi: 10.1159/000028475.
A three-dimensional model of the body was used to simulate two different motor tasks: vertical jumping and normal walking on level ground. The pattern of muscle excitations, body motions, and ground-reaction forces for each task were calculated using dynamic optimization theory. For jumping, the performance criterion was to maximize the height reached by the center of mass of the body; for walking, the measure of performance was metabolic energy consumed per meter walked. Quantitative comparisons of the simulation results with experimental data obtained from people indicate that the model reproduces the salient features of maximum-height jumping and normal walking on the level. Analyses of the model solutions will allow detailed explanations to be given about the actions of specific muscles during each of these tasks.
垂直跳跃和平地正常行走。利用动态优化理论计算了每个任务的肌肉兴奋模式、身体运动和地面反作用力。对于跳跃，性能标准是使身体质心达到的高度最大化；对于行走，性能指标是每行走一米所消耗的代谢能量。将模拟结果与从人体获得的实验数据进行定量比较表明，该模型再现了水平面上最大高度跳跃和正常行走的显著特征。对模型解决方案的分析将有助于对这些任务中特定肌肉的作用给出详细解释。
