Abstract
This paper presents a new, simple model to evaluate the instrumental random errors in kinematic analysis of human movements using stereophotogrammetry. By means of equations analogous to that relate linear or angular momentum with linear or angular velocities, a direct measurement of instantaneous motion can be made without previous finite displacement analysis. Single explicit expressions can be obtained to evaluate the influence of instrumental random errors in the accuracy of the kinematic variables. From these expressions, some conclusions about the effect of marker cluster design on the experimental errors are obtained. An experiment has been carried out in order to validate the proposed technique and to assess the experimental errors in linear and angular velocity measurement and its influence in instantaneous helical axis determination.
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This work has been supported by the Spanish Government grant DPI2003-07883-C02-01.
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Page, A., De Rosario, H., Mata, V. et al. Effect of marker cluster design on the accuracy of human movement analysis using stereophotogrammetry. Med Bio Eng Comput 44, 1113–1119 (2006). https://doi.org/10.1007/s11517-006-0124-3
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DOI: https://doi.org/10.1007/s11517-006-0124-3