Hao Letian, Yin Chao, Duan Xiaozhe, Wang Zeyu, Zhang Meizhen
College of Physical Education and Health Engineering, Taiyuan University of Technology, Jinzhong 030600, China.
Sensors (Basel). 2024 Dec 13;24(24):7972. doi: 10.3390/s24247972.
The application of dynamic data in biomechanics is crucial; traditional laboratory-level force measurement systems are precise, but they are costly and limited to fixed environments. To address these limitations, empirical evidence supports the widespread adoption of portable force-measuring platforms, with recommendations for their ongoing development and enhancement. Taiyuan University of Technology has collaborated with KunWei Sports Technology Co., Ltd. to develop a portable 3D force measurement system. To validate the reliability of this equipment, 15 male collegiate students were randomly selected to perform four distinct movements: walking, running, CMJ, and side-cutting. The Bertec system served as a reference device alongside the KunWei system to collect the kinetic characteristics of the test movements. The consistency and fitting quality between the two devices were evaluated through -tests, ICC, and NRMSE. The research results indicated that there were no significant differences in peak force between the KunWei system and the Bertec system across all four movements ( > 0.05). The ICC values for force-time curves were all above 0.98, with NRMSE not exceeding 0.165. The KunWei system exhibited high consistency and reliability under various motion conditions compared to the Bertec system. This system maintains data accuracy, significantly broadens the application scope of force measurement systems, and reduces procurement and maintenance costs. It has been successfully applied in technical support for multiple water sports and winter projects with ideal results achieved.
动态数据在生物力学中的应用至关重要；传统的实验室级测力系统精度高，但成本高昂且局限于固定环境。为解决这些局限性，实证证据支持广泛采用便携式测力平台，并对其持续发展和改进提出了建议。太原理工大学与昆纬体育科技有限公司合作开发了一种便携式三维测力系统。为验证该设备的可靠性，随机选取15名男性大学生进行四种不同的动作：行走、跑步、纵跳和侧切。在昆纬系统旁边，将Bertec系统用作参考设备，以收集测试动作的动力学特征。通过t检验、组内相关系数（ICC）和归一化均方根误差（NRMSE）评估这两种设备之间的一致性和拟合质量。研究结果表明，在所有四种动作中，昆纬系统和Bertec系统之间的峰值力均无显著差异（P>0.05）。力-时间曲线的ICC值均高于0.98，NRMSE不超过0.165。与Bertec系统相比，昆纬系统在各种运动条件下均表现出高度的一致性和可靠性。该系统保持数据准确性，显著拓宽了测力系统的应用范围，并降低了采购和维护成本。它已成功应用于多个水上运动和冬季项目的技术支持，取得了理想的效果。
