腰椎三度空間動態之生物力學模型之建立

Abstract

A mathematical model is developed to estimate the personalized inertial data of living human bodylinkages. Instead of the laborious imaging and mechanical measurements, this study incorporates the inertial formulae of the existing mathematical models and is devoted to derive the mathematical equations to give the better morphological resemblance to the bodylinkages, especially for head, neck, thorax, pelvis, thighs, and feet. All the inertial formulae are given in the context and programmable for the common-used computer languages. The model segments the human body into 17 main bodylinkages. With the inertial formulae available in this study, the shape fluctuations of bodylinkages can be modeled by further fragmentation into many subsolids for more accurate prediction. With an example in this study, the mean error of the model prediction for body mass is 1.28% with 20-min anthropometric measurements and 2.3-sec execution time on a personal computer. For its accuracy and easy programmability, this model provides a convenient tool of estimating personalized inertial data of living subject in contrast to comparatively laborious experimental procedures.