Continuous ambulatory hand force monitoring during manual materials handling using instrumented force shoes and an inertial motion capture suit
Continuous ambulatory hand force monitoring during manual materials handling using instrumented force shoes and an inertial motion capture suit
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DOI：
10.1016/j.jbiomech.2017.10.006
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发表时间：
2018-03-21
影响因子：
2.4
通讯作者：
van Dieen, J. H.
中科院分区：
文献类型：
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作者：
Faber, G. S.;Koopman, A. S.;van Dieen, J. H.
手部力量 (HF) 通常在手动材料处理的生物力学评估过程中测量；然而，在现场研究中直接测量 HF 通常是一个挑战。因此，在之前的研究中，我们提出了一种基于地面反作用力（GRF）和身体节段加速度的高频估计方法，并使用实验室设备进行了测试：使用测力台（FP）测量GFR，使用光学运动捕捉（OMC）测量节段加速度。在当前的研究中，我们评估了基于动态测量系统的 HF 估计方法，该系统由惯性运动捕捉 (IMC) 和仪表测力鞋 (FS) 组成。16 名参与者从地面举起并搬运一个 10 公斤重的板条箱，同时使用 OMC 和 IMC 测量 3D 全身运动学，并使用 FP 和 FS 测量 3D GRF。我们根据以下条件估计 3D 手部力矢量：(1) FP+OMC、(2) FP+IMC 和 (3) FS+IMC。我们计算了估计的 HF 与根据板条箱运动学计算的参考 HF 以及板条箱从 FP 的 GRF 之间的均方根差 (RMSD)。对受试者和跨 3D 力方向进行平均，使用实验室设备 (FP + OMC) 时，HF RMSD 范围在 10-15N 之间；使用 IMC 而不是 OMC 数据 (FP +IMC) 时，HF RMSD 范围在 11-18N 之间； 17-21N 当将 FS 与 IMC 结合使用时（FS + IMC）。对于手动提升过程中脊柱负载的评估，该误差被认为是可以接受的，因为它会导致峰值力矩估计的误差小于 5%。 (C) 2017 Elsevier Ltd. 保留所有权利。
Hand forces (HFs) are commonly measured during biomechanical assessment of manual materials handling; however, it is often a challenge to directly measure HFs in field studies. Therefore, in a previous study we proposed a HF estimation method based on ground reaction forces (GRFs) and body segment accelerations and tested it with laboratory equipment: GFRs were measured with force plates (FPs) and segment accelerations were measured using optical motion capture (OMC). In the current study, we evaluated the HF estimation method based on an ambulatory measurement system, consisting of inertial motion capture (IMC) and instrumented force shoes (FSs).Sixteen participants lifted and carried a 10-kg crate from ground level while 3D full-body kinematics were measured using OMC and IMC, and 3D GRFs were measured using FPs and FSs. We estimated 3D hand force vectors based on: (1) FP+OMC, (2) FP+IMC and (3) FS+IMC. We calculated the root-mean square differences (RMSDs) between the estimated HFs to reference HFs calculated based on crate kinematics and the GRFs of a FP that the crate was lifted from.Averaged over subjects and across 3D force directions, the HF RMSD ranged between 10-15N when using the laboratory equipment (FP + OMC), 11-18N when using the IMC instead of OMC data (FP +IMC), and 17-21N when using the FSs in combination with IMC (FS + IMC). This error is regarded acceptable for the assessment of spinal loading during manual lifting, as it would results in less than 5% error in peak moment estimates. (C) 2017 Elsevier Ltd. All rights reserved.