Evaluation of the Validity, Reliability, and Kinematic Characteristics of Multi-Segment Foot Models in Motion Capture
Evaluation of the Validity, Reliability, and Kinematic Characteristics of Multi-Segment Foot Models in Motion Capture
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DOI：
10.3390/s20164415
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发表时间：
2020-08
期刊：
影响因子：
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通讯作者：
Yuka Sekiguchi;T. Kokubun;H. Hanawa;H. Shono;A. Tsuruta;N. Kanemura
中科院分区：
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作者：
Yuka Sekiguchi;T. Kokubun;H. Hanawa;H. Shono;A. Tsuruta;N. Kanemura
本研究的目的是通过测量一个虚拟脚来评估我们新的多节段足部模型的有效性和可靠性，并通过测量活体来检验我们新的多节段足部模型的运动学特性。使用我们的新模型和Rizzoli模型，我们使用在所有平面上在−90到90度的范围内移动的虚拟脚进行了两个实验；对于活体，24名参与者进行了小腿抬起、步态和下落跳跃。根据我们的新模型计算的大多数三维(3D)旋转角与真实值呈强正相关(r>；0.8，p<；0.01)。大多数3D旋转角度都有固定的偏差；然而，大多数都在一致的范围内。在我们的新模型中，我们在所有动态任务中都观察到了脚部运动的时间模式，如Rizzoli模型中的模式。我们的结论是，我们的新的多节段足部模型对于运动分析是有效的，并且对于在动态任务中使用3D运动捕捉来分析足部运动是有用的。
This study aimed to evaluate the validity and reliability of our new multi-segment foot model by measuring a dummy foot, and examine the kinematic characteristics of our new multi-segment foot model by measuring the living body. Using our new model and the Rizzoli model, we conducted two experiments with a dummy foot that was moved within a range from −90 to 90 degrees in all planes; for the living body, 24 participants performed calf raises, gait, and drop jumps. Most three-dimensional (3D) rotation angles calculated according to our new models were strongly positively correlated with true values (r > 0.8, p < 0.01). Most 3D rotation angles had fixed biases; however, most of them were in the range of the limits of agreement. Temporal patterns of foot motion, such as those in the Rizzoli model, were observed in our new model during all dynamic tasks. We concluded that our new multi-segment foot model was valid for motion analysis and was useful for analyzing the foot motion using 3D motion capture during dynamic tasks.