仅使用胫骨和胸骨上的惯性测量单元估计跑步期间胫骨骨负荷：压力中心方法

IF 2.4 3区医学 Q3 BIOPHYSICS

Journal of biomechanics Pub Date : 2025-06-27 DOI:10.1016/j.jbiomech.2025.112839

Robbert P. van Middelaar, Jasper Reenalda

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引用次数: 0

摘要

逆动力学是一种通过分析运动学和地面反作用力（GRF）来估计关节力和运动所需的外部力矩的方法。在使用全身惯性测量单元（IMU）设置的自下而上逆动力学分析中，压力中心（CoP）是完成计算的唯一缺失变量。本研究旨在利用胫骨和胸骨IMU，从胫骨IMU方向估计前后位CoP，计算以2.5、3.1和3.6 m/s速度跑步的后脚攻击者矢状踝关节力矩和胫骨骨负荷（TBL）。与参考标记/力板相比，CoP、矢状踝关节力矩和TBL具有很强的相关性（≥0.90）。CoP具有较好的准确性，矢状面踝关节力矩（rRMSE≤12.9%）和TBL （rRMSE≤10.2%）具有较高的准确性。在所有速度下，仅imu方法与最大踝关节足底屈曲力矩和TBL的参考之间没有显着差异。未来的工作应该探索多维CoP，包括3D GRF，并验证非后脚打击跑者。这些发现强调了使用胫骨和胸骨IMU监测跑步过程中下肢力和力矩的潜力，而不依赖于测量位置。

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Estimating tibial bone load during running using only inertial measurement units on the tibias and sternum: a Centre of Pressure approach

Inverse dynamics is a method to estimate joint forces and external moments needed for movement by analysing kinematics and ground reaction forces (GRF). In a bottom-up inverse dynamics analysis using a full-body inertial measurement unit (IMU) setup, the Centre of Pressure (CoP) is the only missing variable to complete the calculation. This study aimed to estimate the anteroposterior CoP from the tibia IMU orientation to calculate the sagittal ankle moment and tibial bone load (TBL) in rearfoot strikers running at 2.5, 3.1, and 3.6 m/s, using both tibia and the sternum IMU. This achieved strong correlations (≥0.90) for the CoP, sagittal ankle moment, and TBL compared with a marker/force plate reference. While the CoP estimate had fair accuracy, the sagittal ankle moment (rRMSE ≤ 12.9 %) and TBL (rRMSE ≤ 10.2 %) showed high accuracy. No significant differences were found between the IMU-only method and the reference for maximum ankle plantar flexion moment and TBL across all speeds. Future work should explore the multidimensional CoP, the inclusion of 3D GRF, and validation for non-rearfoot strike runners. These findings highlight the potential of using both tibia and the sternum IMU to monitor lower extremity forces and moments during running, independent of measurement location.

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来源期刊

Journal of biomechanics 生物-工程：生物医学

CiteScore

5.10

自引率

4.20%

发文量

345

审稿时长

1 months

期刊介绍： The Journal of Biomechanics publishes reports of original and substantial findings using the principles of mechanics to explore biological problems. Analytical, as well as experimental papers may be submitted, and the journal accepts original articles, surveys and perspective articles (usually by Editorial invitation only), book reviews and letters to the Editor. The criteria for acceptance of manuscripts include excellence, novelty, significance, clarity, conciseness and interest to the readership. Papers published in the journal may cover a wide range of topics in biomechanics, including, but not limited to: -Fundamental Topics - Biomechanics of the musculoskeletal, cardiovascular, and respiratory systems, mechanics of hard and soft tissues, biofluid mechanics, mechanics of prostheses and implant-tissue interfaces, mechanics of cells. -Cardiovascular and Respiratory Biomechanics - Mechanics of blood-flow, air-flow, mechanics of the soft tissues, flow-tissue or flow-prosthesis interactions. -Cell Biomechanics - Biomechanic analyses of cells, membranes and sub-cellular structures; the relationship of the mechanical environment to cell and tissue response. -Dental Biomechanics - Design and analysis of dental tissues and prostheses, mechanics of chewing. -Functional Tissue Engineering - The role of biomechanical factors in engineered tissue replacements and regenerative medicine. -Injury Biomechanics - Mechanics of impact and trauma, dynamics of man-machine interaction. -Molecular Biomechanics - Mechanical analyses of biomolecules. -Orthopedic Biomechanics - Mechanics of fracture and fracture fixation, mechanics of implants and implant fixation, mechanics of bones and joints, wear of natural and artificial joints. -Rehabilitation Biomechanics - Analyses of gait, mechanics of prosthetics and orthotics. -Sports Biomechanics - Mechanical analyses of sports performance.