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首页> 外文期刊>Journal of Applied Biomechanics >Limitations of Functionally Determined Joint Centers for the Analysis of Athletic Human Movement: A Case Study of the Upper Limb
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Limitations of Functionally Determined Joint Centers for the Analysis of Athletic Human Movement: A Case Study of the Upper Limb

机译：功能上确定的人体运动分析联合中心的局限性：以上肢为例

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Much research is ongoing into improving the accuracy of functional algorithms to determine joint centers (JC), but there has been limited testing using human movement data. This paper is in three parts: Part 1, errors in determining JCs from real human movement data using the SCoRE method; Part 2, variability of marker combinations during a punch; Part 3, variability in the JC due to reconstruction. Results indicate determining the JC of the shoulder or elbow with a triad of markers per segment with an accuracy greater than 20 mm is unlikely. Part 2 suggests conducting a pilot study with abundant markers to obtain triads, which are most stable due to differences of 300-400% in variability between triads. Variability due to the choice of reference frame for reconstruction during the punch ranged from 2.5 to 13.8 mm for the shoulder and 1.5 to 21.1 mm for the elbow. It would appear more pertinent to enhance the practical methods in situ than to further improve theoretical accuracy of functional methods.
机译：为了提高确定联合中心（JC）的功能算法的准确性，正在进行大量研究，但是使用人体运动数据进行的测试却很有限。本文分为三个部分：第1部分，使用SCoRE方法从真实人体运动数据确定JC时的错误；第2部分，打孔期间标记组合的可变性；第三部分，由于重建，JC的可变性。结果表明，在每段中使用三重标记确定肩部或肘部的JC的准确性不可能超过20 mm。第2部分建议使用大量标记物进行试点研究以获得三联体，由于三联体之间的变异性差异为300-400％，因此三联体最稳定。由于在打孔期间选择了用于重建的参照系，因此其差异在肩部范围为2.5至13.8 mm，在肘部范围为1.5至21.1 mm。与现场提高实用方法的理论准确性相比，增强现场方法更为合适。

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