在循环中比较OpenCap和基于标记器的运动捕捉系统之间的动力学和动力学
Reza Kakavand1, Reza Ahmadi2, Atousa Parsaei2
1Department of Biomedical Engineering, Schulich School of Engineering, University of Calgary, Canada; McCaig Institute for Bone and Joint Health, University of Calgary, Calgary, Canada; Human Performance Laboratory, Faculty of Kinesiology, University of Calgary, Calgary, Canada.
Computers in biology and medicine
|May 1, 2025
概括
无标记运动捕捉 (OpenCap) 显示出与基于标记器的循环关节角度和动力学系统的强烈一致. 虽然对实用生物力学有希望,但一些关节角度需要进一步细化以获得最佳准确性.
科学领域:
- 生物力学 生物力学
- 运动捕捉技术的技术.
- 运动科学 运动科学 运动科学
背景情况:
- 无标记器的运动捕捉系统通过消除对物理标记器的需求,为基于标记器的系统提供了实际优势.
- 像OpenCap这样的无标记系统在自行车生物力学中的应用和准确性需要彻底调查.
- 在骑自行车时评估关节动力学和运动学对于性能分析和伤害预防至关重要.
研究的目的:
- 评估基于标记器和无标记器 (OpenCap) 运动捕捉系统在循环过程中的关节动力学和动力学之间的协议.
- 为了确定OpenCap与基于黄金标准标记器系统的准确性,在自行车环境中.
- 为了确定特定的关节角度和动力学,OpenCap可能需要进一步细化循环分析.
主要方法:
- 十名参与者在各种速度和阻力下进行了骑自行车试验.
- 使用基于标记器和无标记器 (OpenCap) 系统同时收集运动数据.
- 使用OpenSim计算了联合动力学和动力学,并使用根平均平方误差 (RMSE),皮尔森相关系数 (r) 和布兰德-阿尔特曼分析进行了比较.
主要成果:
- 对于部,膝盖和脚关节的角度,发现了非常强的一致性 (r > 0.9).
- 对脚 (10.7-12.4°) 和膝盖 (9.3-10.2°) 屈曲/延伸角度观察到相对较高的RMSE值.
- 联合反应力量和时刻显示中度至非常强的一致性,力量的RMSE在13.7%至37.7%BW之间.
结论:
- 无标记运动捕捉 (OpenCap) 显示了循环运动中的生物力学分析的巨大潜力.
- 虽然总体一致性很强,但特定的关节角度,特别是脚和膝盖的曲/延伸,表明了OpenCap改进的领域.
- 这些发现支持使用OpenCap用于实际的自行车生物力学,并指出潜在的可变性和需要进一步开发.
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